{"id":3739,"date":"2025-04-21T12:02:49","date_gmt":"2025-04-21T03:02:49","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=3739"},"modified":"2025-04-21T12:02:51","modified_gmt":"2025-04-21T03:02:51","slug":"php%e3%81%a7csv%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%82%92%e8%aa%ad%e3%81%bf%e8%be%bc%e3%82%807%e3%81%a4%e3%81%ae%e5%ae%9f%e8%b7%b5%e7%9a%84%e3%81%aa%e6%96%b9%e6%b3%95-%e5%88%9d%e5%bf%83%e8%80%85","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=3739","title":{"rendered":"PHP\u3067CSV\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u30807\u3064\u306e\u5b9f\u8df5\u7684\u306a\u65b9\u6cd5 &#8211; \u521d\u5fc3\u8005\u304b\u3089\u4e0a\u7d1a\u8005\u307e\u3067\u5b8c\u5168\u30ac\u30a4\u30c9"},"content":{"rendered":"\n<div class=\"toc\"><br \/>\n<b>Warning<\/b>:  Undefined array key \"is_admin\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>116<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_category_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>121<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>128<\/b><br \/>\n    <div id=\"toc_container\" class=\"sgb-toc--bullets js-smooth-scroll\" data-dialog-title=\"\u76ee\u6b21\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">  <li class=\"first\">    <a href=\"#i-0\">PHP\u3067CSV\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u57fa\u672c\u77e5\u8b58<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u306a\u305cPHP\u3067\u306eCSV\u8aad\u307f\u8fbc\u307f\u304c\u30a6\u30a7\u30d6\u958b\u767a\u3067\u91cd\u8981\u306a\u306e\u304b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">PHP\u3068CSV\u306e\u4e92\u63db\u6027\u306e\u5229\u70b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">PHP\u3067CSV\u3092\u8aad\u307f\u8fbc\u3080\u305f\u3081\u306e\u74b0\u5883\u6e96\u5099<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">\u5fc5\u8981\u306aPHP\u30d0\u30fc\u30b8\u30e7\u30f3\u3068\u62e1\u5f35\u6a5f\u80fd\u306e\u78ba\u8a8d\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-5\">\u30c6\u30b9\u30c8\u7528CSV\u30d5\u30a1\u30a4\u30eb\u306e\u4f5c\u6210\u624b\u9806<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-6\">\u65b9\u6cd51: fgetcsv()\u95a2\u6570\u3092\u4f7f\u3063\u305f\u30b7\u30f3\u30d7\u30eb\u306aCSV\u8aad\u307f\u8fbc\u307f<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-7\">fgetcsv()\u95a2\u6570\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3068\u69cb\u6587<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-8\">\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u4f8b\u3068\u51fa\u529b\u7d50\u679c\u306e\u89e3\u8aac<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-9\">\u65b9\u6cd52: file()\u95a2\u6570\u3068str_getcsv()\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u8aad\u307f\u8fbc\u307f<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-10\">\u914d\u5217\u64cd\u4f5c\u3092\u6d3b\u7528\u3057\u305fCSV\u30c7\u30fc\u30bf\u306e\u53d6\u5f97\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-11\">\u5927\u898f\u6a21CSV\u30d5\u30a1\u30a4\u30eb\u3092\u51e6\u7406\u3059\u308b\u969b\u306e\u6700\u9069\u5316\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-12\">\u65b9\u6cd53: SPLFileObject\u30af\u30e9\u30b9\u3092\u4f7f\u3063\u305f\u52b9\u7387\u7684\u306a\u8aad\u307f\u8fbc\u307f<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-13\">\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30a2\u30d7\u30ed\u30fc\u30c1\u306e\u30e1\u30ea\u30c3\u30c8\u3068\u5177\u4f53\u4f8b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-14\">\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u6d3b\u7528\u3057\u305f\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044CSV\u51e6\u7406\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-15\">\u65b9\u6cd54: League\\Csv\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3063\u305f\u9ad8\u5ea6\u306a\u8aad\u307f\u8fbc\u307f<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-16\">\u5916\u90e8\u30e9\u30a4\u30d6\u30e9\u30ea\u5c0e\u5165\u306e\u30e1\u30ea\u30c3\u30c8\u3068\u8a2d\u5b9a\u624b\u9806<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-17\">\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3084\u5909\u63db\u6a5f\u80fd\u3092\u6d3b\u7528\u3057\u305f\u5b9f\u7528\u4f8b<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-18\">\u65b9\u6cd55: PHPSpreadsheet\u3092\u4f7f\u3063\u305f\u30a8\u30af\u30bb\u30eb\u4e92\u63db\u306eCSV\u51e6\u7406<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-19\">\u30a8\u30af\u30bb\u30eb\u30d5\u30a1\u30a4\u30eb\u3068CSV\u306e\u76f8\u4e92\u5909\u63db\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-20\">\u8907\u96d1\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u6301\u3064CSV\u306e\u8aad\u307f\u8fbc\u307f\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-21\">\u65b9\u6cd56: \u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u306b\u3088\u308b\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044CSV\u8aad\u307f\u8fbc\u307f<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-22\">\u5927\u5bb9\u91cfCSV\u30d5\u30a1\u30a4\u30eb\u3092\u6271\u3046\u969b\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-23\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u6280\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-24\">\u65b9\u6cd57: PHP\u3068Ajax\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u9023\u643aCSV\u51e6\u7406<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-25\">\u30d6\u30e9\u30a6\u30b6\u304b\u3089CSV\u30d5\u30a1\u30a4\u30eb\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u3066\u51e6\u7406\u3059\u308b\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-26\">\u975e\u540c\u671f\u51e6\u7406\u3092\u6d3b\u7528\u3057\u305f\u30e6\u30fc\u30b6\u30fc\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306aCSV\u8aad\u307f\u8fbc\u307f\u5b9f\u88c5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-27\">CSV\u8aad\u307f\u8fbc\u307f\u6642\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u554f\u984c\u3068\u89e3\u6c7a\u7b56<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-28\">\u65e5\u672c\u8a9eCSV\u7279\u6709\u306e\u6587\u5b57\u5316\u3051\u554f\u984c\u306e\u539f\u56e0\u3068\u5bfe\u51e6\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-29\">mb_convert_encoding\u3092\u4f7f\u3063\u305f\u78ba\u5b9f\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-30\">CSV\u30c7\u30fc\u30bf\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3068\u5b89\u5168\u306a\u51e6\u7406\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-31\">\u5165\u529b\u5024\u30c1\u30a7\u30c3\u30af\u3068\u30b5\u30cb\u30bf\u30a4\u30ba\u306e\u91cd\u8981\u6027\u3068\u5b9f\u88c5\u4f8b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-32\">CSV\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u653b\u6483\u3092\u9632\u3050\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-33\">CSV\u8aad\u307f\u8fbc\u307f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-34\">\u51e6\u7406\u901f\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u308bPHP\u306e\u8a2d\u5b9a\u5909\u66f4\u3068\u5b9f\u88c5\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-35\">\u8aad\u307f\u8fbc\u307f\u51e6\u7406\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u6bd4\u8f03\u3068\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u5206\u6790<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-36\">\u3088\u304f\u3042\u308b\u30a8\u30e9\u30fc\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-37\">\u300cfopen failed to open stream\u300d\u30a8\u30e9\u30fc\u306e\u5bfe\u51e6\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-38\">\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3068\u6587\u5b57\u30b3\u30fc\u30c9\u306b\u95a2\u9023\u3059\u308b\u554f\u984c\u89e3\u6c7a\u30ac\u30a4\u30c9<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-39\">\u307e\u3068\u3081\uff1a\u3042\u306a\u305f\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u6700\u9069\u306aCSV\u8aad\u307f\u8fbc\u307f\u65b9\u6cd5\u306e\u9078\u3073\u65b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-40\">\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u5225\u304a\u3059\u3059\u3081\u306eCSV\u8aad\u307f\u8fbc\u307f\u624b\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-41\">\u3055\u3089\u306a\u308b\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9\u3068\u95a2\u9023\u6280\u8853\u306e\u7d39\u4ecb<\/a>      <\/li>    <\/ul>  <\/li><\/ul>\n      <a href=\"#\" class=\"sgb-toc-button js-toc-button\" rel=\"nofollow\" data-open-dialog=\"true\"><i class=\"fa fa-list\"><\/i><span class=\"sgb-toc-button__text\">\u76ee\u6b21\u3078<\/span><\/a>\n    <\/div><\/div><h2 class=\"wp-block-heading\" id=\"i-0\">PHP\u3067CSV\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u57fa\u672c\u77e5\u8b58<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u306a\u305cPHP\u3067\u306eCSV\u8aad\u307f\u8fbc\u307f\u304c\u30a6\u30a7\u30d6\u958b\u767a\u3067\u91cd\u8981\u306a\u306e\u304b<\/h3>\n\n\n\n<p>CSV\u30d5\u30a1\u30a4\u30eb\uff08Comma-Separated Values\uff09\u306f\u3001\u30b7\u30f3\u30d7\u30eb\u306a\u30c6\u30ad\u30b9\u30c8\u5f62\u5f0f\u3067\u30c7\u30fc\u30bf\u3092\u683c\u7d0d\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066\u5e83\u304f\u666e\u53ca\u3057\u3066\u3044\u307e\u3059\u3002\u7279\u306b\u30a6\u30a7\u30d6\u958b\u767a\u306e\u73fe\u5834\u3067\u306f\u3001PHP\u3092\u4f7f\u3063\u305fCSV\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u51e6\u7406\u306f\u4ee5\u4e0b\u306e\u7406\u7531\u304b\u3089\u975e\u5e38\u306b\u91cd\u8981\u306a\u6280\u8853\u3068\u306a\u3063\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30c7\u30fc\u30bf\u306e\u30a4\u30f3\u30dd\u30fc\u30c8\/\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u6a5f\u80fd\u306e\u5b9f\u88c5<\/strong>: EC\u30b5\u30a4\u30c8\u3067\u306e\u5546\u54c1\u30c7\u30fc\u30bf\u4e00\u62ec\u767b\u9332\u3084\u3001\u9867\u5ba2\u60c5\u5831\u306e\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u3078\u306e\u53d6\u308a\u8fbc\u307f\u306a\u3069\u3001\u5927\u91cf\u30c7\u30fc\u30bf\u306e\u53d7\u3051\u6e21\u3057\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30b7\u30b9\u30c6\u30e0\u9593\u306e\u30c7\u30fc\u30bf\u9023\u643a<\/strong>: \u7570\u306a\u308b\u30b7\u30b9\u30c6\u30e0\u9593\u3067\u30c7\u30fc\u30bf\u3092\u3084\u308a\u53d6\u308a\u3059\u308b\u969b\u306e\u4e2d\u9593\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3068\u3057\u3066\u983b\u7e41\u306b\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3068\u5fa9\u5143<\/strong>: \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3084\u5fa9\u5143\u4f5c\u696d\u3092\u7c21\u6613\u7684\u306b\u884c\u3046\u624b\u6bb5\u3068\u3057\u3066\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30ec\u30ac\u30b7\u30fc\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u4e92\u63db\u6027<\/strong>: \u53e4\u3044\u30b7\u30b9\u30c6\u30e0\u3084\u7570\u306a\u308b\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3068\u306e\u30c7\u30fc\u30bf\u4ea4\u63db\u306b\u304a\u3044\u3066\u6c4e\u7528\u6027\u306e\u9ad8\u3044\u5f62\u5f0f\u3067\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5b9f\u52d9\u3067\u306f\u3001\u4f8b\u3048\u3070\u5546\u54c1\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u3067\u6570\u5343\u70b9\u306e\u5546\u54c1\u60c5\u5831\u3092CSV\u3067\u4e00\u62ec\u767b\u9332\u3057\u305f\u308a\u3001\u5206\u6790\u7528\u306b\u30ed\u30b0\u30c7\u30fc\u30bf\u3092CSV\u5f62\u5f0f\u3067\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3057\u305f\u308a\u3059\u308b\u5834\u9762\u304c\u65e5\u5e38\u7684\u306b\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">PHP\u3068CSV\u306e\u4e92\u63db\u6027\u306e\u5229\u70b9<\/h3>\n\n\n\n<p>PHP\u306fCSV\u30d5\u30a1\u30a4\u30eb\u306e\u51e6\u7406\u306b\u95a2\u3057\u3066\u512a\u308c\u305f\u4e92\u63db\u6027\u3068\u6a5f\u80fd\u3092\u5099\u3048\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u7d44\u307f\u8fbc\u307f\u95a2\u6570\u306e\u5145\u5b9f<\/strong>: <code>fgetcsv()<\/code>\u3084<code>str_getcsv()<\/code>\u306a\u3069CSV\u51e6\u7406\u306b\u7279\u5316\u3057\u305f\u95a2\u6570\u304c\u6a19\u6e96\u3067\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059<\/li>\n\n\n\n<li><strong>\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u51e6\u7406<\/strong>: \u884c\u5358\u4f4d\u3067\u306e\u8aad\u307f\u8fbc\u307f\u304c\u53ef\u80fd\u306a\u305f\u3081\u3001\u5927\u304d\u306a\u30d5\u30a1\u30a4\u30eb\u3067\u3082\u30e1\u30e2\u30ea\u6d88\u8cbb\u3092\u6291\u3048\u3089\u308c\u307e\u3059<\/li>\n\n\n\n<li><strong>\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306e\u67d4\u8edf\u6027<\/strong>: <code>mb_convert_encoding()<\/code>\u306a\u3069\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u7570\u306a\u308b\u6587\u5b57\u30b3\u30fc\u30c9\u306eCSV\u3082\u9069\u5207\u306b\u51e6\u7406\u3067\u304d\u307e\u3059<\/li>\n\n\n\n<li><strong>\u591a\u69d8\u306a\u51fa\u529b\u5f62\u5f0f\u3078\u306e\u5909\u63db<\/strong>: \u8aad\u307f\u8fbc\u3093\u3060CSV\u30c7\u30fc\u30bf\u3092JSON\u3001XML\u3001HTML\u30c6\u30fc\u30d6\u30eb\u306a\u3069\u69d8\u3005\u306a\u5f62\u5f0f\u306b\u5909\u63db\u3057\u3084\u3059\u3044\u7279\u6027\u304c\u3042\u308a\u307e\u3059<\/li>\n<\/ol>\n\n\n\n<p>PHP\u306e\u7279\u6027\u3068\u3057\u3066\u3001\u30c6\u30ad\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u51e6\u7406\u304c\u5f97\u610f\u306a\u70b9\u304cCSV\u64cd\u4f5c\u3068\u306e\u76f8\u6027\u3092\u9ad8\u3081\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u4e0a\u3067\u52d5\u4f5c\u3059\u308b\u305f\u3081\u3001\u30d6\u30e9\u30a6\u30b6\u304b\u3089\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3055\u308c\u305fCSV\u30d5\u30a1\u30a4\u30eb\u3092\u305d\u306e\u5834\u3067\u51e6\u7406\u3057\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u53d6\u308a\u8fbc\u3080\u3068\u3044\u3063\u305f\u4e00\u9023\u306e\u6d41\u308c\u3092\u30b7\u30fc\u30e0\u30ec\u30b9\u306b\u5b9f\u88c5\u3067\u304d\u308b\u70b9\u3082\u5927\u304d\u306a\u5229\u70b9\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u57fa\u672c\u77e5\u8b58\u3092\u8e0f\u307e\u3048\u305f\u4e0a\u3067\u3001\u5177\u4f53\u7684\u306aPHP\u306b\u3088\u308bCSV\u8aad\u307f\u8fbc\u307f\u624b\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">PHP\u3067CSV\u3092\u8aad\u307f\u8fbc\u3080\u305f\u3081\u306e\u74b0\u5883\u6e96\u5099<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u5fc5\u8981\u306aPHP\u30d0\u30fc\u30b8\u30e7\u30f3\u3068\u62e1\u5f35\u6a5f\u80fd\u306e\u78ba\u8a8d\u65b9\u6cd5<\/h3>\n\n\n\n<p>PHP\u3067CSV\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u306b\u306f\u3001\u307e\u305a\u9069\u5207\u306a\u74b0\u5883\u304c\u6574\u3063\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002\u57fa\u672c\u7684\u306aCSV\u8aad\u307f\u8fbc\u307f\u6a5f\u80fd\u306f\u3001PHP\u306e\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u7279\u5225\u306a\u62e1\u5f35\u6a5f\u80fd\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306f\u4e0d\u8981\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u4ee5\u4e0b\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u78ba\u8a8d\u3059\u308b\u3068\u5b89\u5fc3\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>PHP\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u78ba\u8a8d<\/strong> CSV\u64cd\u4f5c\u306e\u57fa\u672c\u6a5f\u80fd\u306f\u53e4\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u306ePHP\u3067\u3082\u5229\u7528\u53ef\u80fd\u3067\u3059\u304c\u3001PHP 5.3\u4ee5\u964d\u3067\u306f\u6a5f\u80fd\u304c\u5f37\u5316\u3055\u308c\u3066\u304a\u308a\u3001PHP 7.0\u4ee5\u964d\u3092\u63a8\u5968\u3057\u307e\u3059\u3002\u30d0\u30fc\u30b8\u30e7\u30f3\u78ba\u8a8d\u306f\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3067\u884c\u3048\u307e\u3059\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ PHP\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u78ba\u8a8d\necho 'PHP Version: ' . phpversion();\n\n\/\/ CSV\u306b\u95a2\u9023\u3059\u308b\u95a2\u6570\u304c\u5229\u7528\u53ef\u80fd\u304b\u78ba\u8a8d\necho function_exists('fgetcsv') ? 'fgetcsv() \u306f\u5229\u7528\u53ef\u80fd\u3067\u3059' : 'fgetcsv() \u306f\u5229\u7528\u3067\u304d\u307e\u305b\u3093';\necho function_exists('str_getcsv') ? 'str_getcsv() \u306f\u5229\u7528\u53ef\u80fd\u3067\u3059' : 'str_getcsv() \u306f\u5229\u7528\u3067\u304d\u307e\u305b\u3093';<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u65e5\u672c\u8a9e\u51e6\u7406\u306e\u305f\u3081\u306e\u62e1\u5f35\u6a5f\u80fd<\/strong> \u65e5\u672c\u8a9e\u3092\u542b\u3080CSV\u30d5\u30a1\u30a4\u30eb\u3092\u6271\u3046\u5834\u5408\u306f\u3001mbstring\u62e1\u5f35\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u78ba\u8a8d\u304c\u5fc5\u8981\u3067\u3059\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ mbstring\u62e1\u5f35\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u78ba\u8a8d\necho extension_loaded('mbstring') ? 'mbstring\u62e1\u5f35\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u6709\u52b9\u3067\u3059' : 'mbstring\u62e1\u5f35\u30e2\u30b8\u30e5\u30fc\u30eb\u304c\u7121\u52b9\u3067\u3059';<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u8a2d\u5b9a<\/strong> \u30a6\u30a7\u30d6\u7d4c\u7531\u3067CSV\u30d5\u30a1\u30a4\u30eb\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3059\u308b\u5834\u5408\u306f\u3001php.ini\u306e\u8a2d\u5b9a\u3082\u78ba\u8a8d\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u95a2\u9023\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d\necho 'upload_max_filesize: ' . ini_get('upload_max_filesize') . '&lt;br&gt;';\necho 'post_max_size: ' . ini_get('post_max_size') . '&lt;br&gt;';\necho 'max_file_uploads: ' . ini_get('max_file_uploads') . '&lt;br&gt;';<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">\u30c6\u30b9\u30c8\u7528CSV\u30d5\u30a1\u30a4\u30eb\u306e\u4f5c\u6210\u624b\u9806<\/h3>\n\n\n\n<p>\u958b\u767a\u3084\u30c6\u30b9\u30c8\u306b\u4f7f\u3048\u308bCSV\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u4ee5\u4e0b\u306e\u624b\u9806\u3067\u7c21\u5358\u306b\u4f5c\u6210\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30c6\u30ad\u30b9\u30c8\u30a8\u30c7\u30a3\u30bf\u3067\u4f5c\u6210\u3059\u308b\u65b9\u6cd5<\/strong> \u30e1\u30e2\u5e33\u3084Visual Studio Code\u306a\u3069\u306e\u30c6\u30ad\u30b9\u30c8\u30a8\u30c7\u30a3\u30bf\u3092\u958b\u304d\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30ab\u30f3\u30de\u533a\u5207\u308a\u3067\u30c7\u30fc\u30bf\u3092\u5165\u529b\u3057\u3001\u62e1\u5f35\u5b50\u3092<code>.csv<\/code>\u3068\u3057\u3066\u4fdd\u5b58\u3057\u307e\u3059\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">id,name,email,age\n1,\u5c71\u7530\u592a\u90ce,taro@example.com,30\n2,\u9234\u6728\u82b1\u5b50,hanako@example.com,25\n3,\u4f50\u85e4\u6b21\u90ce,jiro@example.com,40<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Excel\u304b\u3089\u4f5c\u6210\u3059\u308b\u65b9\u6cd5<\/strong> Microsoft Excel\u306a\u3069\u306e\u8868\u8a08\u7b97\u30bd\u30d5\u30c8\u3067\u30c7\u30fc\u30bf\u3092\u5165\u529b\u5f8c\u3001\u300c\u540d\u524d\u3092\u4ed8\u3051\u3066\u4fdd\u5b58\u300d\u304b\u3089\u300cCSV\uff08\u30ab\u30f3\u30de\u533a\u5207\u308a\uff09\u300d\u5f62\u5f0f\u3092\u9078\u629e\u3057\u3066\u4fdd\u5b58\u3057\u307e\u3059\u3002\u65e5\u672c\u8a9e\u3092\u542b\u3080\u5834\u5408\u306fShift-JIS\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>PHP\u3067\u52d5\u7684\u306b\u751f\u6210\u3059\u308b\u65b9\u6cd5<\/strong> \u30c6\u30b9\u30c8\u7528\u306eCSV\u30d5\u30a1\u30a4\u30eb\u3092\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u81ea\u52d5\u751f\u6210\u3059\u308b\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306aPHP\u30b3\u30fc\u30c9\u304c\u5229\u7528\u3067\u304d\u307e\u3059\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30c6\u30b9\u30c8\u7528CSV\u30d5\u30a1\u30a4\u30eb\u306e\u751f\u6210\n$file = fopen('test_data.csv', 'w');\n\n\/\/ \u30d8\u30c3\u30c0\u30fc\u884c\nfputcsv($file, ['id', 'name', 'email', 'age']);\n\n\/\/ \u30c7\u30fc\u30bf\u884c\nfputcsv($file, [1, '\u5c71\u7530\u592a\u90ce', 'taro@example.com', 30]);\nfputcsv($file, [2, '\u9234\u6728\u82b1\u5b50', 'hanako@example.com', 25]);\nfputcsv($file, [3, '\u4f50\u85e4\u6b21\u90ce', 'jiro@example.com', 40]);\n\nfclose($file);\necho '\u30c6\u30b9\u30c8\u7528CSV\u30d5\u30a1\u30a4\u30eb\u3092\u751f\u6210\u3057\u307e\u3057\u305f';<\/pre>\n\n\n\n<p>\u74b0\u5883\u306e\u78ba\u8a8d\u3068\u30c6\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u306e\u6e96\u5099\u304c\u3067\u304d\u305f\u3089\u3001\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u5177\u4f53\u7684\u306aCSV\u8aad\u307f\u8fbc\u307f\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-6\">\u65b9\u6cd51: fgetcsv()\u95a2\u6570\u3092\u4f7f\u3063\u305f\u30b7\u30f3\u30d7\u30eb\u306aCSV\u8aad\u307f\u8fbc\u307f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">fgetcsv()\u95a2\u6570\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3068\u69cb\u6587<\/h3>\n\n\n\n<p><code>fgetcsv()<\/code>\u95a2\u6570\u306f\u3001PHP\u306b\u6a19\u6e96\u3067\u7d44\u307f\u8fbc\u307e\u308c\u305f\u95a2\u6570\u3067\u3001CSV\u30d5\u30a1\u30a4\u30eb\u30921\u884c\u305a\u3064\u8aad\u307f\u8fbc\u307f\u3001\u305d\u306e\u884c\u3092\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u914d\u5217\u3068\u3057\u3066\u8fd4\u3057\u307e\u3059\u3002\u3053\u306e\u95a2\u6570\u306f\u30b7\u30f3\u30d7\u30eb\u306a\u304c\u3089\u3082\u5f37\u529b\u3067\u3001\u591a\u304f\u306e\u57fa\u672c\u7684\u306aCSV\u51e6\u7406\u30bf\u30b9\u30af\u306b\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u57fa\u672c\u69cb\u6587:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">array fgetcsv(resource $handle, int $length = 0, string $delimiter = \",\", string $enclosure = \"\\\"\", string $escape = \"\\\\\")\n<\/pre>\n\n\n\n<p><strong>\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u8aac\u660e:<\/strong><\/p>\n\n\n<div id=\"id-d2f0aa71-3dea-4c00-a87c-9fcb8b06cd88\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30d1\u30e9\u30e1\u30fc\u30bf<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td>$handle<\/td><td>\u30d5\u30a1\u30a4\u30eb\u30dd\u30a4\u30f3\u30bf\u3002\u901a\u5e38\u306f<code>fopen()<\/code>\u95a2\u6570\u3067\u53d6\u5f97\u3057\u307e\u3059<\/td><\/tr><tr><td>$length<\/td><td>1\u884c\u306e\u6700\u5927\u9577\uff08\u30d0\u30a4\u30c8\u6570\uff09\u30020\u306f\u5236\u9650\u306a\u3057\uff08\u63a8\u5968\uff09<\/td><\/tr><tr><td>$delimiter<\/td><td>\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u533a\u5207\u308a\u6587\u5b57\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u30ab\u30f3\u30de\u300c,\u300d\uff09<\/td><\/tr><tr><td>$enclosure<\/td><td>\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u56f2\u3080\u6587\u5b57\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u30c0\u30d6\u30eb\u30af\u30a9\u30fc\u30c8\u300c\u201d\u300d\uff09<\/td><\/tr><tr><td>$escape<\/td><td>\u30a8\u30b9\u30b1\u30fc\u30d7\u6587\u5b57\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u30d0\u30c3\u30af\u30b9\u30e9\u30c3\u30b7\u30e5\u300c\\\u300d\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u4f8b\u3068\u51fa\u529b\u7d50\u679c\u306e\u89e3\u8aac<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u306b\u3001<code>fgetcsv()<\/code>\u3092\u4f7f\u3063\u305f\u57fa\u672c\u7684\u306aCSV\u8aad\u307f\u8fbc\u307f\u306e\u4f8b\u3092\u793a\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u3092\u6307\u5b9a\n$filepath = 'users.csv';\n\n\/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\uff08\u8aad\u307f\u8fbc\u307f\u30e2\u30fc\u30c9\uff09\n$file = fopen($filepath, 'r');\n\n\/\/ \u30d5\u30a1\u30a4\u30eb\u304c\u6b63\u5e38\u306b\u958b\u3051\u305f\u304b\u78ba\u8a8d\nif ($file) {\n    \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u8aad\u307f\u8fbc\u3080\uff08\u30ab\u30e9\u30e0\u540d\u3068\u3057\u3066\u4f7f\u7528\uff09\n    $headers = fgetcsv($file);\n    \n    \/\/ \u30c7\u30fc\u30bf\u3092\u683c\u7d0d\u3059\u308b\u914d\u5217\u3092\u521d\u671f\u5316\n    $userData = [];\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u306e\u7d42\u308f\u308a\u307e\u30671\u884c\u305a\u3064\u8aad\u307f\u8fbc\u3080\n    while (($row = fgetcsv($file)) !== FALSE) {\n        \/\/ \u9023\u60f3\u914d\u5217\u306b\u5909\u63db\uff08\u30d8\u30c3\u30c0\u30fc\u3092\u30ad\u30fc\u3068\u3057\u3066\u4f7f\u7528\uff09\n        $user = array_combine($headers, $row);\n        \n        \/\/ \u30c7\u30fc\u30bf\u914d\u5217\u306b\u8ffd\u52a0\n        $userData[] = $user;\n    }\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u9589\u3058\u308b\n    fclose($file);\n    \n    \/\/ \u7d50\u679c\u3092\u8868\u793a\n    echo '&lt;pre&gt;';\n    print_r($userData);\n    echo '&lt;\/pre&gt;';\n} else {\n    echo '\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u307e\u305b\u3093\u3067\u3057\u305f\u3002';\n}\n?&gt;\n<\/pre>\n\n\n\n<p>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u51e6\u7406\u3092\u884c\u3063\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><code>fopen()<\/code>\u3067CSV\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u307f\u30e2\u30fc\u30c9(\u2018r\u2019)\u3067\u958b\u304d\u307e\u3059<\/li>\n\n\n\n<li>\u6700\u521d\u306e\u884c\u3092\u30d8\u30c3\u30c0\u30fc\uff08\u5217\u540d\uff09\u3068\u3057\u3066\u8aad\u307f\u8fbc\u307f\u307e\u3059<\/li>\n\n\n\n<li><code>while<\/code>\u30eb\u30fc\u30d7\u3092\u4f7f\u3063\u3066\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u7d42\u308f\u308a\u307e\u30671\u884c\u305a\u3064\u8aad\u307f\u8fbc\u307f\u307e\u3059<\/li>\n\n\n\n<li><code>array_combine()<\/code>\u3067\u3001\u30d8\u30c3\u30c0\u30fc\u3068\u5024\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u9023\u60f3\u914d\u5217\u3092\u4f5c\u6210\u3057\u307e\u3059<\/li>\n\n\n\n<li>\u5404\u884c\u306e\u30c7\u30fc\u30bf\u3092<code>$userData<\/code>\u914d\u5217\u306b\u8ffd\u52a0\u3057\u307e\u3059<\/li>\n\n\n\n<li>\u6700\u5f8c\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u9589\u3058\u3066\u3001\u7d50\u679c\u3092\u8868\u793a\u3057\u307e\u3059<\/li>\n<\/ol>\n\n\n\n<p><strong>\u51fa\u529b\u4f8b\uff08users.csv\u306e\u5185\u5bb9\u304c\u300cid,name,email,age\u300d\u3068\u3044\u3046\u30d8\u30c3\u30c0\u30fc\u3068\u5bfe\u5fdc\u3059\u308b\u30c7\u30fc\u30bf\u306e\u5834\u5408\uff09:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">Array\n(\n    [0] =&gt; Array\n        (\n            [id] =&gt; 1\n            [name] =&gt; \u5c71\u7530\u592a\u90ce\n            [email] =&gt; taro@example.com\n            [age] =&gt; 30\n        )\n    [1] =&gt; Array\n        (\n            [id] =&gt; 2\n            [name] =&gt; \u9234\u6728\u82b1\u5b50\n            [email] =&gt; hanako@example.com\n            [age] =&gt; 25\n        )\n    \/\/ \u4ed6\u306e\u30c7\u30fc\u30bf...\n)\n<\/pre>\n\n\n\n<p>\u3053\u306e\u65b9\u6cd5\u306e\u5229\u70b9\u306f\u30011\u884c\u305a\u3064\u8aad\u307f\u8fbc\u3080\u305f\u3081\u3001\u5927\u304d\u306aCSV\u30d5\u30a1\u30a4\u30eb\u3067\u3082\u30e1\u30e2\u30ea\u52b9\u7387\u304c\u826f\u3044\u3053\u3068\u3067\u3059\u3002\u3055\u3089\u306b\u3001\u8aad\u307f\u8fbc\u3093\u3060\u30c7\u30fc\u30bf\u3092\u5373\u5ea7\u306b\u51e6\u7406\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u633f\u5165\u3059\u308b\u5834\u5408\u306f\u6b21\u306e\u3088\u3046\u306b\u66f8\u3051\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ ...\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\u51e6\u7406...\n\n\/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u3092\u6e96\u5099\uff08PDO\u3092\u4f7f\u7528\uff09\n$pdo = new PDO('mysql:host=localhost;dbname=mydb;charset=utf8', 'username', 'password');\n$stmt = $pdo-&gt;prepare('INSERT INTO users (id, name, email, age) VALUES (?, ?, ?, ?)');\n\n\/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u30b9\u30ad\u30c3\u30d7\nfgetcsv($file);\n\n\/\/ 1\u884c\u305a\u3064\u8aad\u307f\u8fbc\u3093\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u633f\u5165\nwhile (($row = fgetcsv($file)) !== FALSE) {\n    $stmt-&gt;execute($row);\n}\n\n\/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u9589\u3058\u308b\nfclose($file);\n<\/pre>\n\n\n\n<p><code>fgetcsv()<\/code>\u306f\u3001\u30b7\u30f3\u30d7\u30eb\u306a\u69cb\u6587\u306a\u304c\u3089\u3082\u975e\u5e38\u306b\u67d4\u8edf\u6027\u304c\u9ad8\u304f\u3001PHP\u3067CSV\u3092\u6271\u3046\u969b\u306e\u57fa\u672c\u3068\u306a\u308b\u95a2\u6570\u3067\u3059\u3002\u7279\u306b\u3001\u884c\u5358\u4f4d\u3067\u9010\u6b21\u51e6\u7406\u3092\u884c\u3046\u5834\u5408\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-9\">\u65b9\u6cd52: file()\u95a2\u6570\u3068str_getcsv()\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u8aad\u307f\u8fbc\u307f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">\u914d\u5217\u64cd\u4f5c\u3092\u6d3b\u7528\u3057\u305fCSV\u30c7\u30fc\u30bf\u306e\u53d6\u5f97\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p><code>file()<\/code>\u95a2\u6570\u3068<code>str_getcsv()<\/code>\u95a2\u6570\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3068\u3001\u975e\u5e38\u306b\u30b3\u30f3\u30d1\u30af\u30c8\u306a\u30b3\u30fc\u30c9\u3067CSV\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u65b9\u6cd5\u306f\u3001\u7279\u306b\u4e2d\u5c0f\u898f\u6a21\u306eCSV\u30d5\u30a1\u30a4\u30eb\u306b\u5bfe\u3057\u3066\u52b9\u7387\u7684\u3067\u3001PHP\u306e\u914d\u5217\u64cd\u4f5c\u95a2\u6570\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u67d4\u8edf\u306a\u51e6\u7406\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ file()\u3067\u30d5\u30a1\u30a4\u30eb\u5168\u4f53\u3092\u884c\u306e\u914d\u5217\u3068\u3057\u3066\u8aad\u307f\u8fbc\u307f\n$lines = file('users.csv', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);\n\n\/\/ \u6700\u521d\u306e\u884c\u3092\u30d8\u30c3\u30c0\u30fc\u3068\u3057\u3066\u53d6\u5f97\n$headers = str_getcsv(array_shift($lines));\n\n\/\/ \u5404\u884c\u3092CSV\u3068\u3057\u3066\u89e3\u6790\u3057\u3001\u9023\u60f3\u914d\u5217\u306b\u5909\u63db\n$data = [];\nforeach ($lines as $line) {\n    \/\/ \u5404\u884c\u3092CSV\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u5206\u89e3\n    $row = str_getcsv($line);\n    \n    \/\/ \u30d8\u30c3\u30c0\u30fc\u3068\u5024\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u9023\u60f3\u914d\u5217\u306b\n    $data[] = array_combine($headers, $row);\n}\n\n\/\/ \u7d50\u679c\u8868\u793a\necho '&lt;pre&gt;';\nprint_r($data);\necho '&lt;\/pre&gt;';\n?&gt;\n<\/pre>\n\n\n\n<p>\u3057\u304b\u3057\u3001\u3088\u308a\u6d17\u7df4\u3055\u308c\u305f\u65b9\u6cd5\u3068\u3057\u3066\u3001PHP\u306e\u914d\u5217\u64cd\u4f5c\u95a2\u6570\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3055\u3089\u306b\u30b3\u30fc\u30c9\u3092\u7c21\u6f54\u306b\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u884c\u306e\u914d\u5217\u3068\u3057\u3066\u8aad\u307f\u8fbc\u307f\n$lines = file('users.csv', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);\n\n\/\/ \u6700\u521d\u306e\u884c\u3092\u30d8\u30c3\u30c0\u30fc\u3068\u3057\u3066\u53d6\u5f97\n$headers = str_getcsv(array_shift($lines));\n\n\/\/ array_map\u3092\u4f7f\u3063\u3066\u6b8b\u308a\u306e\u884c\u3092\u4e00\u62ec\u51e6\u7406\n$data = array_map(function($line) use ($headers) {\n    return array_combine($headers, str_getcsv($line));\n}, $lines);\n\n\/\/ \u7d50\u679c\u8868\u793a\necho '&lt;pre&gt;';\nprint_r($data);\necho '&lt;\/pre&gt;';\n?&gt;\n<\/pre>\n\n\n\n<p>\u3053\u306e\u65b9\u6cd5\u306e\u512a\u308c\u3066\u3044\u308b\u70b9\u306f\u3001\u30b3\u30fc\u30c9\u304c\u30b7\u30f3\u30d7\u30eb\u3067\u8aad\u307f\u3084\u3059\u304f\u3001<code>array_map()<\/code>\u306a\u3069\u306e\u9ad8\u968e\u95a2\u6570\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u5ba3\u8a00\u7684\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30b9\u30bf\u30a4\u30eb\u3092\u5b9f\u73fe\u3067\u304d\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u5927\u898f\u6a21CSV\u30d5\u30a1\u30a4\u30eb\u3092\u51e6\u7406\u3059\u308b\u969b\u306e\u6700\u9069\u5316\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u4e0a\u8a18\u306e\u65b9\u6cd5\u306f\u3001\u4e2d\u5c0f\u898f\u6a21\u306eCSV\u30d5\u30a1\u30a4\u30eb\u306b\u306f\u975e\u5e38\u306b\u52b9\u7387\u7684\u3067\u3059\u304c\u3001\u5927\u898f\u6a21\u306aCSV\u30d5\u30a1\u30a4\u30eb\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u306b\u306f\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<code>file()<\/code>\u95a2\u6570\u306f\u30d5\u30a1\u30a4\u30eb\u5168\u4f53\u3092\u30e1\u30e2\u30ea\u306b\u8aad\u307f\u8fbc\u3080\u305f\u3081\u3001\u6570\u767eMB\u4ee5\u4e0a\u306eCSV\u30d5\u30a1\u30a4\u30eb\u3092\u6271\u3046\u5834\u5408\u306f\u30e1\u30e2\u30ea\u4e0d\u8db3\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5927\u898f\u6a21\u30d5\u30a1\u30a4\u30eb\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u306e\u6700\u9069\u5316\u65b9\u6cd5\u3068\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u8003\u3048\u3089\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30c1\u30e3\u30f3\u30af\u51e6\u7406\u3092\u5c0e\u5165\u3059\u308b<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ SplFileObject\u3092\u4f7f\u3063\u3066\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n$file = new SplFileObject('large_data.csv');\n$file-&gt;setFlags(SplFileObject::READ_CSV);\n\n\/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u53d6\u5f97\n$file-&gt;rewind();\n$headers = $file-&gt;current();\n\n\/\/ \u4e00\u5b9a\u6570\u306e\u884c\u3054\u3068\u306b\u51e6\u7406\uff08\u4f8b\uff1a1000\u884c\u305a\u3064\uff09\n$chunkSize = 1000;\n$rowCount = 0;\n$chunk = [];\n\n$file-&gt;next(); \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u30b9\u30ad\u30c3\u30d7\nwhile (!$file-&gt;eof()) {\n    $row = $file-&gt;current();\n    if ($row !== [null]) { \/\/ \u7a7a\u884c\u5bfe\u7b56\n        $chunk[] = array_combine($headers, $row);\n        $rowCount++;\n\n        \/\/ \u30c1\u30e3\u30f3\u30af\u30b5\u30a4\u30ba\u306b\u9054\u3057\u305f\u3089\u51e6\u7406\n        if ($rowCount % $chunkSize === 0) {\n            processChunk($chunk); \/\/ \u5b9f\u969b\u306e\u51e6\u7406\u95a2\u6570\n            $chunk = []; \/\/ \u30c1\u30e3\u30f3\u30af\u3092\u30af\u30ea\u30a2\n        }\n    }\n    $file-&gt;next();\n}\n\n\/\/ \u6b8b\u308a\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\nif (!empty($chunk)) {\n    processChunk($chunk);\n}\n\n\/\/ \u30c1\u30e3\u30f3\u30af\u51e6\u7406\u95a2\u6570\u306e\u4f8b\nfunction processChunk($data) {\n    \/\/ \u3053\u3053\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3078\u306e\u4e00\u62ec\u633f\u5165\u306a\u3069\u3092\u884c\u3046\n    echo count($data) . \"\u4ef6\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3057\u307e\u3057\u305f&lt;br&gt;\";\n}\n?&gt;<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u6d3b\u7528\u3059\u308b<\/strong> PHP 5.5\u4ee5\u964d\u3067\u306f\u3001\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u3066\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u51e6\u7406\u304c\u53ef\u80fd\u3067\u3059\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ CSV\u3092\u884c\u3054\u3068\u306b\u8aad\u307f\u8fbc\u3080\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u95a2\u6570\nfunction getCsvRows($filename) {\n    $handle = fopen($filename, 'r');\n\n    \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u53d6\u5f97\n    $headers = fgetcsv($handle);\n\n    while (($row = fgetcsv($handle)) !== FALSE) {\n        yield array_combine($headers, $row);\n    }\n\n    fclose($handle);\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nforeach (getCsvRows('large_data.csv') as $row) {\n    \/\/ \u5404\u884c\u306b\u5bfe\u3059\u308b\u51e6\u7406\n    echo $row['name'] . \"&lt;br&gt;\";\n}\n?&gt;<\/pre>\n\n\n\n<p><code>file()<\/code>\u3068<code>str_getcsv()<\/code>\u306e\u7d44\u307f\u5408\u308f\u305b\u306f\u3001\u30b7\u30f3\u30d7\u30eb\u3067\u7406\u89e3\u3057\u3084\u3059\u304f\u3001\u7279\u306b\u5c0f\u301c\u4e2d\u898f\u6a21\u306eCSV\u30d5\u30a1\u30a4\u30eb\u51e6\u7406\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u5927\u898f\u6a21\u30d5\u30a1\u30a4\u30eb\u306e\u5834\u5408\u306f\u3001\u4e0a\u8a18\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u3092\u691c\u8a0e\u3059\u308b\u304b\u3001\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u7d39\u4ecb\u3059\u308b\u65b9\u6cd5\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-12\">\u65b9\u6cd53: SPLFileObject\u30af\u30e9\u30b9\u3092\u4f7f\u3063\u305f\u52b9\u7387\u7684\u306a\u8aad\u307f\u8fbc\u307f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30a2\u30d7\u30ed\u30fc\u30c1\u306e\u30e1\u30ea\u30c3\u30c8\u3068\u5177\u4f53\u4f8b<\/h3>\n\n\n\n<p>PHP 5.1\u4ee5\u964d\u3067\u5c0e\u5165\u3055\u308c\u305f<code>SPLFileObject<\/code>\u30af\u30e9\u30b9\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3092\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u306e\u65b9\u6cd5\u3067\u884c\u3046\u305f\u3081\u306e\u5f37\u529b\u306a\u30af\u30e9\u30b9\u3067\u3059\u3002\u7279\u306bCSV\u51e6\u7406\u306b\u304a\u3044\u3066\u306f\u3001\u5c02\u7528\u306eCSV\u30d5\u30e9\u30b0\u3092\u6301\u3061\u3001\u30a4\u30c6\u30ec\u30fc\u30bf\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u975e\u5e38\u306b\u52b9\u7387\u7684\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>SPLFileObject\u306e\u4e3b\u306a\u30e1\u30ea\u30c3\u30c8:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30d5\u30a1\u30a4\u30eb\u30dd\u30a4\u30f3\u30bf\u3092\u624b\u52d5\u3067\u7ba1\u7406\u3059\u308b\u5fc5\u8981\u304c\u306a\u3044<\/li>\n\n\n\n<li>CSV\u306e\u89e3\u6790\u6a5f\u80fd\u304c\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u308b<\/li>\n\n\n\n<li>\u30a4\u30c6\u30ec\u30fc\u30bf\u3068\u3057\u3066\u52d5\u4f5c\u3059\u308b\u305f\u3081\u3001\u30e1\u30e2\u30ea\u52b9\u7387\u304c\u826f\u3044<\/li>\n\n\n\n<li>\u30d5\u30a1\u30a4\u30eb\u884c\u306e\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3084\u64cd\u4f5c\u304c\u5bb9\u6613<\/li>\n\n\n\n<li>\u69d8\u3005\u306a\u30d5\u30e9\u30b0\u3067\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f\u52d5\u4f5c\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u53ef\u80fd<\/li>\n<\/ul>\n\n\n\n<p><strong>\u57fa\u672c\u7684\u306a\u4f7f\u7528\u4f8b:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\ntry {\n    \/\/ CSV\u30d5\u30a1\u30a4\u30eb\u3092SPLFileObject\u3067\u958b\u304f\n    $file = new SplFileObject('users.csv');\n    \n    \/\/ CSV\u3068\u3057\u3066\u8aad\u307f\u8fbc\u3080\u3088\u3046\u306b\u30d5\u30e9\u30b0\u3092\u8a2d\u5b9a\n    $file-&gt;setFlags(SplFileObject::READ_CSV | SplFileObject::READ_AHEAD | SplFileObject::SKIP_EMPTY | SplFileObject::DROP_NEW_LINE);\n    \n    \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u53d6\u5f97\n    $file-&gt;rewind(); \/\/ \u30d5\u30a1\u30a4\u30eb\u306e\u5148\u982d\u306b\u79fb\u52d5\n    $headers = $file-&gt;current();\n    \n    \/\/ \u30c7\u30fc\u30bf\u884c\u3092\u51e6\u7406\n    $data = [];\n    $file-&gt;next(); \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u30b9\u30ad\u30c3\u30d7\n    \n    while (!$file-&gt;eof()) {\n        $row = $file-&gt;current();\n        \n        \/\/ \u7a7a\u306e\u884c\u3067\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\uff08\u5b8c\u5168\u306a\u7a7a\u884c\u306f SKIP_EMPTY \u3067\u98db\u3070\u3055\u308c\u308b\u304c\u3001\n        \/\/ [null] \u306a\u3069\u306e\u30d1\u30bf\u30fc\u30f3\u306f\u6b8b\u308b\u5834\u5408\u304c\u3042\u308b\uff09\n        if ($row !== [null]) {\n            $data[] = array_combine($headers, $row);\n        }\n        \n        $file-&gt;next();\n    }\n    \n    \/\/ \u7d50\u679c\u8868\u793a\n    echo '&lt;pre&gt;';\n    print_r($data);\n    echo '&lt;\/pre&gt;';\n    \n} catch (Exception $e) {\n    echo '\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ' . $e-&gt;getMessage();\n}\n?&gt;\n<\/pre>\n\n\n\n<p>\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3067\u4f7f\u7528\u3057\u3066\u3044\u308b\u30d5\u30e9\u30b0\u306e\u610f\u5473\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>READ_CSV<\/code>: \u884c\u3092CSV\u3068\u3057\u3066\u89e3\u6790\u3057\u3001\u914d\u5217\u3067\u8fd4\u3059<\/li>\n\n\n\n<li><code>READ_AHEAD<\/code>: \u5148\u8aad\u307f\u3057\u3066\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b<\/li>\n\n\n\n<li><code>SKIP_EMPTY<\/code>: \u7a7a\u884c\u3092\u30b9\u30ad\u30c3\u30d7\u3059\u308b<\/li>\n\n\n\n<li><code>DROP_NEW_LINE<\/code>: \u884c\u672b\u306e\u6539\u884c\u6587\u5b57\u3092\u524a\u9664\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u6d3b\u7528\u3057\u305f\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044CSV\u51e6\u7406\u65b9\u6cd5<\/h3>\n\n\n\n<p><code>SPLFileObject<\/code>\u306e\u6700\u5927\u306e\u5229\u70b9\u306f\u3001\u30a4\u30c6\u30ec\u30fc\u30bf\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u3066\u3044\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5927\u898f\u6a21\u306aCSV\u30d5\u30a1\u30a4\u30eb\u3067\u3082\u30e1\u30e2\u30ea\u52b9\u7387\u826f\u304f\u51e6\u7406\u3067\u304d\u307e\u3059\u3002\u7279\u306b<code>foreach<\/code>\u30eb\u30fc\u30d7\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3068\u3001\u30b7\u30f3\u30d7\u30eb\u304b\u3064\u52b9\u7387\u7684\u306a\u30b3\u30fc\u30c9\u306b\u306a\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\ntry {\n    \/\/ CSV\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n    $file = new SplFileObject('large_users.csv');\n    $file-&gt;setFlags(SplFileObject::READ_CSV | SplFileObject::READ_AHEAD | SplFileObject::SKIP_EMPTY);\n    \n    \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u53d6\u5f97\n    $file-&gt;rewind();\n    $headers = $file-&gt;current();\n    $file-&gt;next(); \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u30b9\u30ad\u30c3\u30d7\n    \n    \/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\uff08\u4f8b: PDO\uff09\n    $pdo = new PDO('mysql:host=localhost;dbname=myapp;charset=utf8', 'username', 'password');\n    $stmt = $pdo-&gt;prepare('INSERT INTO users (id, name, email, age) VALUES (?, ?, ?, ?)');\n    \n    \/\/ \u51e6\u7406\u30ab\u30a6\u30f3\u30bf\u30fc\n    $count = 0;\n    \n    \/\/ foreach\u3067\u30a4\u30c6\u30ec\u30fc\u30bf\u3068\u3057\u3066\u51e6\u7406\uff08\u5927\u898f\u6a21\u30d5\u30a1\u30a4\u30eb\u3067\u3082\u30e1\u30e2\u30ea\u52b9\u7387\u304c\u826f\u3044\uff09\n    foreach ($file as $rowNum =&gt; $row) {\n        \/\/ \u6700\u521d\u306e\u884c\uff08\u30d8\u30c3\u30c0\u30fc\uff09\u306f\u30b9\u30ad\u30c3\u30d7\n        if ($rowNum === 0 || $row === [null]) {\n            continue;\n        }\n        \n        \/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u633f\u5165\n        $stmt-&gt;execute($row);\n        $count++;\n        \n        \/\/ \u9032\u6357\u8868\u793a\uff08\u30aa\u30d7\u30b7\u30e7\u30f3\uff09\n        if ($count % 1000 === 0) {\n            echo $count . '\u4ef6\u51e6\u7406\u3057\u307e\u3057\u305f...&lt;br&gt;';\n            flush(); \/\/ \u51fa\u529b\u30d0\u30c3\u30d5\u30a1\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\n        }\n    }\n    \n    echo '\u5408\u8a08' . $count . '\u4ef6\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3057\u307e\u3057\u305f\u3002';\n    \n} catch (Exception $e) {\n    echo '\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ' . $e-&gt;getMessage();\n}\n?&gt;\n<\/pre>\n\n\n\n<p>\u3055\u3089\u306b\u3001<code>SplFileObject<\/code>\u3092\u62e1\u5f35\u3057\u3066\u30ab\u30b9\u30bf\u30e0\u6a5f\u80fd\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\nclass CsvFileObject extends SplFileObject {\n    protected $headers;\n    protected $headerMap = [];\n    \n    public function __construct($filename, $openMode = 'r') {\n        parent::__construct($filename, $openMode);\n        $this-&gt;setFlags(self::READ_CSV | self::READ_AHEAD | self::SKIP_EMPTY);\n        \n        \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u8aad\u307f\u8fbc\u307f\n        $this-&gt;rewind();\n        $this-&gt;headers = parent::current();\n        \n        \/\/ \u30d8\u30c3\u30c0\u30fc\u30de\u30c3\u30d7\u3092\u4f5c\u6210\uff08\u5217\u540d\u2192\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff09\n        foreach ($this-&gt;headers as $index =&gt; $name) {\n            $this-&gt;headerMap[$name] = $index;\n        }\n        \n        \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u30b9\u30ad\u30c3\u30d7\n        $this-&gt;next();\n    }\n    \n    \/\/ \u5217\u540d\u3067\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306bcurrent()\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\n    public function current() {\n        $row = parent::current();\n        if ($row === [null] || $row === false) {\n            return $row;\n        }\n        \n        return array_combine($this-&gt;headers, $row);\n    }\n    \n    \/\/ \u7279\u5b9a\u306e\u5217\u3060\u3051\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3057\u3066\u53d6\u5f97\u3059\u308b\u30e1\u30bd\u30c3\u30c9\n    public function getColumns($columns = []) {\n        $row = $this-&gt;current();\n        if ($row === false) {\n            return false;\n        }\n        \n        if (empty($columns)) {\n            return $row;\n        }\n        \n        $result = [];\n        foreach ($columns as $column) {\n            if (isset($row[$column])) {\n                $result[$column] = $row[$column];\n            }\n        }\n        \n        return $result;\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\ntry {\n    $csv = new CsvFileObject('users.csv');\n    \n    foreach ($csv as $rowNum =&gt; $row) {\n        if ($rowNum === 0 || $row === [null] || $row === false) {\n            continue;\n        }\n        \n        \/\/ \u9023\u60f3\u914d\u5217\u3068\u3057\u3066\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u53ef\u80fd\n        echo $row['name'] . ' (' . $row['email'] . ')&lt;br&gt;';\n        \n        \/\/ \u307e\u305f\u306f\u7279\u5b9a\u306e\u5217\u3060\u3051\u53d6\u5f97\n        $userData = $csv-&gt;getColumns(['id', 'email']);\n        \/\/ $userData\u3092\u51e6\u7406...\n    }\n} catch (Exception $e) {\n    echo '\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ' . $e-&gt;getMessage();\n}\n?&gt;\n<\/pre>\n\n\n\n<p><code>SPLFileObject<\/code>\u3092\u4f7f\u7528\u3057\u305f\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3001\u7279\u306b\u5927\u898f\u6a21\u306aCSV\u30d5\u30a1\u30a4\u30eb\u306e\u51e6\u7406\u3084\u3001\u8907\u96d1\u306a\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u30fb\u5909\u63db\u304c\u5fc5\u8981\u306a\u5834\u5408\u306b\u771f\u4fa1\u3092\u767a\u63ee\u3057\u307e\u3059\u3002\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u306e\u8a2d\u8a08\u306b\u99b4\u67d3\u307f\u304c\u3042\u308b\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u306b\u3068\u3063\u3066\u306f\u3001\u30b3\u30fc\u30c9\u306e\u4fdd\u5b88\u6027\u3068\u518d\u5229\u7528\u6027\u3082\u5411\u4e0a\u3059\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-15\">\u65b9\u6cd54: League\\Csv\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3063\u305f\u9ad8\u5ea6\u306a\u8aad\u307f\u8fbc\u307f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">\u5916\u90e8\u30e9\u30a4\u30d6\u30e9\u30ea\u5c0e\u5165\u306e\u30e1\u30ea\u30c3\u30c8\u3068\u8a2d\u5b9a\u624b\u9806<\/h3>\n\n\n\n<p>\u300c\u8eca\u8f2a\u306e\u518d\u767a\u660e\u300d\u3092\u907f\u3051\u3001\u3088\u308a\u5805\u7262\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u305f\u3081\u306b\u306f\u3001\u5916\u90e8\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u6d3b\u7528\u304c\u6709\u52b9\u3067\u3059\u3002CSV\u51e6\u7406\u306b\u304a\u3044\u3066\u306f\u3001<a href=\"https:\/\/csv.thephpleague.com\/\">League\\Csv<\/a>\u304c\u6700\u3082\u4eba\u6c17\u306e\u3042\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u4e00\u3064\u3067\u3001\u8c4a\u5bcc\u306a\u6a5f\u80fd\u3068\u512a\u308c\u305f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>League\\Csv\u306e\u30e1\u30ea\u30c3\u30c8:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30b7\u30f3\u30d7\u30eb\u3067\u76f4\u611f\u7684\u306aAPI<\/li>\n\n\n\n<li>\u5f37\u529b\u306a\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3068\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u6a5f\u80fd<\/li>\n\n\n\n<li>\u5927\u898f\u6a21\u30d5\u30a1\u30a4\u30eb\u306b\u3082\u5bfe\u5fdc\u3057\u305f\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406<\/li>\n\n\n\n<li>\u69d8\u3005\u306a\u5f62\u5f0f\uff08JSON\u3001HTML\u3001Excel\u306a\u3069\uff09\u3078\u306e\u5909\u63db\u30b5\u30dd\u30fc\u30c8<\/li>\n\n\n\n<li>PSR-12\u6e96\u62e0\u306e\u30b3\u30fc\u30c9\u54c1\u8cea<\/li>\n\n\n\n<li>\u6d3b\u767a\u306a\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u3068\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9<\/li>\n<\/ul>\n\n\n\n<p><strong>\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u624b\u9806:<\/strong><\/p>\n\n\n\n<p>League\\Csv\u306fComposer\u3092\u901a\u3058\u3066\u7c21\u5358\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># Composer\u3092\u307e\u3060\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u3044\u306a\u3044\u5834\u5408\ncurl -sS https:\/\/getcomposer.org\/installer | php\nmv composer.phar \/usr\/local\/bin\/composer\n\n# League\\Csv\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\ncomposer require league\/csv:^9.0\n<\/pre>\n\n\n\n<p><strong>\u57fa\u672c\u7684\u306a\u4f7f\u7528\u4f8b:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ Composer\u306e\u30aa\u30fc\u30c8\u30ed\u30fc\u30c0\u30fc\u3092\u8aad\u307f\u8fbc\u307f\nrequire 'vendor\/autoload.php';\n\nuse League\\Csv\\Reader;\nuse League\\Csv\\Statement;\n\ntry {\n    \/\/ CSV\u30d5\u30a1\u30a4\u30eb\u3092Reader\u3067\u958b\u304f\n    $csv = Reader::createFromPath('users.csv', 'r');\n    $csv-&gt;setHeaderOffset(0); \/\/ 1\u884c\u76ee\u3092\u30d8\u30c3\u30c0\u30fc\u3068\u3057\u3066\u8a2d\u5b9a\n    \n    \/\/ \u5168\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\n    $records = $csv-&gt;getRecords();\n    \n    foreach ($records as $record) {\n        echo $record['name'] . ' (' . $record['email'] . ')&lt;br&gt;';\n    }\n    \n} catch (Exception $e) {\n    echo '\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ' . $e-&gt;getMessage();\n}\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3084\u5909\u63db\u6a5f\u80fd\u3092\u6d3b\u7528\u3057\u305f\u5b9f\u7528\u4f8b<\/h3>\n\n\n\n<p>League\\Csv\u306e\u5f37\u307f\u306f\u3001\u305d\u306e\u9ad8\u5ea6\u306a\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3068\u5909\u63db\u6a5f\u80fd\u306b\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u3092\u6d3b\u7528\u3057\u305f\u5b9f\u7528\u7684\u306a\u4f8b\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>1. \u30ec\u30b3\u30fc\u30c9\u306e\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/strong><\/p>\n\n\n\n<p>\u7279\u5b9a\u306e\u6761\u4ef6\u306b\u5408\u81f4\u3059\u308b\u30ec\u30b3\u30fc\u30c9\u3060\u3051\u3092\u62bd\u51fa\u3059\u308b\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\nrequire 'vendor\/autoload.php';\n\nuse League\\Csv\\Reader;\nuse League\\Csv\\Statement;\n\n\/\/ CSV\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n$csv = Reader::createFromPath('users.csv', 'r');\n$csv-&gt;setHeaderOffset(0);\n\n\/\/ Statement\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3066\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\n$stmt = Statement::create()\n    -&gt;where(function(array $record) {\n        \/\/ \u5e74\u9f62\u304c30\u4ee5\u4e0a\u306e\u30e6\u30fc\u30b6\u30fc\u306e\u307f\u62bd\u51fa\n        return isset($record['age']) &amp;&amp; intval($record['age']) &gt;= 30;\n    })\n    -&gt;limit(10); \/\/ \u6700\u592710\u4ef6\u307e\u3067\u53d6\u5f97\n\n\/\/ \u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3092\u5b9f\u884c\n$filteredRecords = $stmt-&gt;process($csv);\n\nforeach ($filteredRecords as $record) {\n    echo $record['name'] . ' (\u5e74\u9f62: ' . $record['age'] . ')&lt;br&gt;';\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>2. \u30c7\u30fc\u30bf\u306e\u5909\u63db\u3068\u30de\u30c3\u30d4\u30f3\u30b0<\/strong><\/p>\n\n\n\n<p>CSV\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3057\u306a\u304c\u3089\u5909\u63db\u3059\u308b\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\nrequire 'vendor\/autoload.php';\n\nuse League\\Csv\\Reader;\nuse League\\Csv\\Statement;\n\n\/\/ CSV\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n$csv = Reader::createFromPath('products.csv', 'r');\n$csv-&gt;setHeaderOffset(0);\n\n\/\/ Statement\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u30c7\u30fc\u30bf\u3092\u30de\u30c3\u30d4\u30f3\u30b0\n$stmt = Statement::create();\n$records = $stmt-&gt;process($csv);\n\n\/\/ \u5909\u63db\u51e6\u7406\n$transformedData = [];\nforeach ($records as $record) {\n    \/\/ \u30c7\u30fc\u30bf\u5909\u63db\uff08\u4f8b\uff1a\u4fa1\u683c\u306e\u8a08\u7b97\u3001\u65e5\u4ed8\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u5909\u66f4\u306a\u3069\uff09\n    $transformedData[] = [\n        'product_id' =&gt; $record['id'],\n        'product_name' =&gt; mb_convert_case($record['name'], MB_CASE_TITLE, 'UTF-8'),\n        'price_with_tax' =&gt; intval($record['price']) * 1.1, \/\/ \u7a0e\u8fbc\u4fa1\u683c\u306e\u8a08\u7b97\n        'registered_date' =&gt; date('Y\u5e74m\u6708d\u65e5', strtotime($record['registered_at'])),\n    ];\n}\n\n\/\/ \u7d50\u679c\u8868\u793a\necho '&lt;pre&gt;';\nprint_r($transformedData);\necho '&lt;\/pre&gt;';\n?&gt;\n<\/pre>\n\n\n\n<p><strong>3. CSV\u3092JSON\u5f62\u5f0f\u306b\u5909\u63db<\/strong><\/p>\n\n\n\n<p>CSV\u30c7\u30fc\u30bf\u3092JSON\u5f62\u5f0f\u3067\u51fa\u529b\u3059\u308b\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\nrequire 'vendor\/autoload.php';\n\nuse League\\Csv\\Reader;\nuse League\\Csv\\Statement;\n\n\/\/ CSV\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n$csv = Reader::createFromPath('data.csv', 'r');\n$csv-&gt;setHeaderOffset(0);\n\n\/\/ \u5168\u30ec\u30b3\u30fc\u30c9\u3092\u53d6\u5f97\n$stmt = Statement::create();\n$records = $stmt-&gt;process($csv);\n\n\/\/ JSON\u306b\u5909\u63db\u3057\u3066\u51fa\u529b\nheader('Content-Type: application\/json');\necho json_encode(iterator_to_array($records), JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);\n?&gt;\n<\/pre>\n\n\n\n<p><strong>4. CSV\u30c7\u30fc\u30bf\u306e\u691c\u8a3c\u3068\u4f8b\u5916\u51e6\u7406<\/strong><\/p>\n\n\n\n<p>\u5165\u529bCSV\u30c7\u30fc\u30bf\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3092\u884c\u3046\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\nrequire 'vendor\/autoload.php';\n\nuse League\\Csv\\Reader;\nuse League\\Csv\\Statement;\n\n\/\/ \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u95a2\u6570\nfunction validateUserRecord(array $record): array {\n    $errors = [];\n    \n    \/\/ \u5fc5\u9808\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u30c1\u30a7\u30c3\u30af\n    $requiredFields = ['id', 'name', 'email', 'age'];\n    foreach ($requiredFields as $field) {\n        if (empty($record[$field])) {\n            $errors[] = \"\u30d5\u30a3\u30fc\u30eb\u30c9 '{$field}' \u306f\u5fc5\u9808\u3067\u3059\";\n        }\n    }\n    \n    \/\/ \u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u5f62\u5f0f\u30c1\u30a7\u30c3\u30af\n    if (!empty($record['email']) &amp;&amp; !filter_var($record['email'], FILTER_VALIDATE_EMAIL)) {\n        $errors[] = \"\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9 '{$record['email']}' \u306e\u5f62\u5f0f\u304c\u6b63\u3057\u304f\u3042\u308a\u307e\u305b\u3093\";\n    }\n    \n    \/\/ \u5e74\u9f62\u306e\u30c1\u30a7\u30c3\u30af\n    if (!empty($record['age']) &amp;&amp; (!is_numeric($record['age']) || $record['age'] &lt; 0 || $record['age'] &gt; 120)) {\n        $errors[] = \"\u5e74\u9f62 '{$record['age']}' \u306f0\u301c120\u306e\u7bc4\u56f2\u3067\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\";\n    }\n    \n    return $errors;\n}\n\ntry {\n    \/\/ CSV\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n    $csv = Reader::createFromPath('users.csv', 'r');\n    $csv-&gt;setHeaderOffset(0);\n    \n    \/\/ \u5168\u30ec\u30b3\u30fc\u30c9\u3092\u691c\u8a3c\n    $records = $csv-&gt;getRecords();\n    $validRecords = [];\n    $invalidRecords = [];\n    \n    foreach ($records as $offset =&gt; $record) {\n        $errors = validateUserRecord($record);\n        \n        if (empty($errors)) {\n            $validRecords[] = $record;\n        } else {\n            $invalidRecords[] = [\n                'record' =&gt; $record,\n                'errors' =&gt; $errors,\n                'line' =&gt; $offset + 2 \/\/ \u30d8\u30c3\u30c0\u30fc\u884c(1)\u3068\u30aa\u30d5\u30bb\u30c3\u30c8(0\u304b\u3089)\u3092\u8003\u616e\n            ];\n        }\n    }\n    \n    \/\/ \u7d50\u679c\u306e\u8868\u793a\n    echo '\u6709\u52b9\u306a\u30ec\u30b3\u30fc\u30c9: ' . count($validRecords) . '\u4ef6&lt;br&gt;';\n    echo '\u7121\u52b9\u306a\u30ec\u30b3\u30fc\u30c9: ' . count($invalidRecords) . '\u4ef6&lt;br&gt;';\n    \n    if (!empty($invalidRecords)) {\n        echo '&lt;h3&gt;\u30a8\u30e9\u30fc\u8a73\u7d30:&lt;\/h3&gt;';\n        foreach ($invalidRecords as $invalid) {\n            echo '\u884c ' . $invalid['line'] . ': ';\n            echo implode(', ', $invalid['errors']) . '&lt;br&gt;';\n        }\n    }\n    \n} catch (Exception $e) {\n    echo '\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ' . $e-&gt;getMessage();\n}\n?&gt;\n<\/pre>\n\n\n\n<p>League\\Csv\u306f\u3001\u5358\u7d14\u306aCSV\u51e6\u7406\u304b\u3089\u9ad8\u5ea6\u306a\u30c7\u30fc\u30bf\u64cd\u4f5c\u307e\u3067\u5e45\u5e83\u304f\u5bfe\u5fdc\u3067\u304d\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3059\u3002\u7279\u306b\u3001\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3001\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3001\u30c7\u30fc\u30bf\u5909\u63db\u306a\u3069\u306e\u8907\u96d1\u306a\u51e6\u7406\u304c\u5fc5\u8981\u306a\u5834\u5408\u3084\u3001\u30c1\u30fc\u30e0\u958b\u767a\u3067\u7d71\u4e00\u3055\u308c\u305f\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u898f\u7d04\u306b\u5f93\u3044\u305f\u3044\u5834\u5408\u306b\u5927\u304d\u306a\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002\u5c0e\u5165\u306e\u624b\u9593\u3068\u5b66\u7fd2\u30b3\u30b9\u30c8\u3092\u8003\u616e\u3057\u3066\u3082\u3001\u4e2d\u301c\u5927\u898f\u6a21\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u5341\u5206\u306b\u305d\u306e\u4fa1\u5024\u304c\u3042\u308b\u3068\u8a00\u3048\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-18\">\u65b9\u6cd55: PHPSpreadsheet\u3092\u4f7f\u3063\u305f\u30a8\u30af\u30bb\u30eb\u4e92\u63db\u306eCSV\u51e6\u7406<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-19\">\u30a8\u30af\u30bb\u30eb\u30d5\u30a1\u30a4\u30eb\u3068CSV\u306e\u76f8\u4e92\u5909\u63db\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>Excel\u30d5\u30a1\u30a4\u30eb\u3068CSV\u30d5\u30a1\u30a4\u30eb\u306e\u76f8\u4e92\u5909\u63db\u3084\u3001\u8907\u96d1\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u6301\u3064CSV\u30d5\u30a1\u30a4\u30eb\u3092\u6271\u3046\u5834\u5408\u306f\u3001<a href=\"https:\/\/github.com\/PHPOffice\/PhpSpreadsheet\">PhpSpreadsheet<\/a>\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u975e\u5e38\u306b\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3068\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3001\u65e7\u6765\u306ePHPExcel\u306e\u5f8c\u7d99\u3068\u3057\u3066\u958b\u767a\u3055\u308c\u3066\u304a\u308a\u3001\u3088\u308a\u9ad8\u901f\u304b\u3064\u67d4\u8edf\u306a\u30b9\u30d7\u30ec\u30c3\u30c9\u30b7\u30fc\u30c8\u51e6\u7406\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u65b9\u6cd5:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># Composer\u3092\u4f7f\u3063\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\ncomposer require phpoffice\/phpspreadsheet\n<\/pre>\n\n\n\n<p><strong>CSV\u8aad\u307f\u8fbc\u307f\u306e\u57fa\u672c\u4f8b:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\nrequire 'vendor\/autoload.php';\n\nuse PhpOffice\\PhpSpreadsheet\\IOFactory;\nuse PhpOffice\\PhpSpreadsheet\\Writer\\Xlsx;\n\ntry {\n    \/\/ CSV\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\n    $spreadsheet = IOFactory::load('users.csv');\n    \n    \/\/ \u6700\u521d\u306e\u30ef\u30fc\u30af\u30b7\u30fc\u30c8\u3092\u53d6\u5f97\n    $worksheet = $spreadsheet-&gt;getActiveSheet();\n    \n    \/\/ \u30c7\u30fc\u30bf\u3092\u914d\u5217\u3068\u3057\u3066\u53d6\u5f97\n    $data = $worksheet-&gt;toArray();\n    \n    \/\/ \u7d50\u679c\u8868\u793a\uff08\u30d8\u30c3\u30c0\u30fc\u884c\u3092\u542b\u3080\uff09\n    echo '&lt;pre&gt;';\n    print_r($data);\n    echo '&lt;\/pre&gt;';\n    \n} catch (Exception $e) {\n    echo '\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ' . $e-&gt;getMessage();\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>CSV\u304b\u3089Excel\u3078\u306e\u5909\u63db\u4f8b:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\nrequire 'vendor\/autoload.php';\n\nuse PhpOffice\\PhpSpreadsheet\\IOFactory;\nuse PhpOffice\\PhpSpreadsheet\\Writer\\Xlsx;\n\ntry {\n    \/\/ CSV\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\n    $spreadsheet = IOFactory::load('data.csv');\n    \n    \/\/ \u30b9\u30bf\u30a4\u30eb\u8a2d\u5b9a\uff08\u4f8b\uff1a\u30d8\u30c3\u30c0\u30fc\u884c\u3092\u592a\u5b57\u306b\u3059\u308b\uff09\n    $worksheet = $spreadsheet-&gt;getActiveSheet();\n    $highestColumn = $worksheet-&gt;getHighestColumn();\n    $worksheet-&gt;getStyle('A1:' . $highestColumn . '1')-&gt;getFont()-&gt;setBold(true);\n    \n    \/\/ \u5217\u5e45\u306e\u81ea\u52d5\u8abf\u6574\n    foreach (range('A', $highestColumn) as $col) {\n        $worksheet-&gt;getColumnDimension($col)-&gt;setAutoSize(true);\n    }\n    \n    \/\/ Excel\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u4fdd\u5b58\n    $writer = new Xlsx($spreadsheet);\n    $writer-&gt;save('data_converted.xlsx');\n    \n    echo 'CSV\u3092Excel\u306b\u5909\u63db\u3057\u307e\u3057\u305f: data_converted.xlsx';\n    \n} catch (Exception $e) {\n    echo '\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ' . $e-&gt;getMessage();\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>Excel\u304b\u3089CSV\u3078\u306e\u5909\u63db\u4f8b:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\nrequire 'vendor\/autoload.php';\n\nuse PhpOffice\\PhpSpreadsheet\\IOFactory;\nuse PhpOffice\\PhpSpreadsheet\\Writer\\Csv;\n\ntry {\n    \/\/ Excel\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\n    $spreadsheet = IOFactory::load('report.xlsx');\n    \n    \/\/ CSV\u3068\u3057\u3066\u4fdd\u5b58\n    $writer = new Csv($spreadsheet);\n    \n    \/\/ CSV\u306e\u8a2d\u5b9a\uff08\u65e5\u672c\u8a9e\u5bfe\u5fdc\uff09\n    $writer-&gt;setDelimiter(',');\n    $writer-&gt;setEnclosure('\"');\n    $writer-&gt;setLineEnding(\"\\r\\n\");\n    $writer-&gt;setSheetIndex(0); \/\/ \u6700\u521d\u306e\u30b7\u30fc\u30c8\u3092\u4f7f\u7528\n    $writer-&gt;setUseBOM(true); \/\/ BOM\u3092\u4f7f\u7528\uff08Excel\u5bfe\u5fdc\uff09\n    \n    \/\/ \u4fdd\u5b58\n    $writer-&gt;save('report_exported.csv');\n    \n    echo 'Excel\u3092CSV\u306b\u5909\u63db\u3057\u307e\u3057\u305f: report_exported.csv';\n    \n} catch (Exception $e) {\n    echo '\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ' . $e-&gt;getMessage();\n}\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">\u8907\u96d1\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u6301\u3064CSV\u306e\u8aad\u307f\u8fbc\u307f\u65b9\u6cd5<\/h3>\n\n\n\n<p>PhpSpreadsheet\u306e\u771f\u4fa1\u306f\u3001\u8907\u96d1\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306eCSV\u30d5\u30a1\u30a4\u30eb\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u306b\u767a\u63ee\u3055\u308c\u307e\u3059\u3002\u7279\u306b\u3001\u6570\u5f0f\u3001\u65e5\u4ed8\u3001\u901a\u8ca8\u306a\u3069\u306e\u7279\u6b8a\u306a\u30c7\u30fc\u30bf\u30bf\u30a4\u30d7\u3092\u542b\u3080CSV\u30d5\u30a1\u30a4\u30eb\u306e\u51e6\u7406\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u7279\u6b8a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8CSV\u306e\u8aad\u307f\u8fbc\u307f\u3068\u51e6\u7406:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\nrequire 'vendor\/autoload.php';\n\nuse PhpOffice\\PhpSpreadsheet\\IOFactory;\nuse PhpOffice\\PhpSpreadsheet\\Shared\\Date;\n\ntry {\n    \/\/ \u8aad\u307f\u8fbc\u307f\u8a2d\u5b9a\u3092\u6307\u5b9a\u3057\u3066CSV\u3092\u8aad\u307f\u8fbc\u3080\n    $reader = IOFactory::createReader('Csv');\n    $reader-&gt;setInputEncoding('SJIS'); \/\/ Shift-JIS\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\n    $reader-&gt;setDelimiter(',');\n    $reader-&gt;setEnclosure('\"');\n    $reader-&gt;setSheetIndex(0);\n    \n    \/\/ \u8aad\u307f\u8fbc\u307f\u5b9f\u884c\n    $spreadsheet = $reader-&gt;load('complex_data.csv');\n    $worksheet = $spreadsheet-&gt;getActiveSheet();\n    \n    \/\/ \u30c7\u30fc\u30bf\u3092\u914d\u5217\u3068\u3057\u3066\u53d6\u5f97\n    $rawData = $worksheet-&gt;toArray();\n    \n    \/\/ \u7279\u6b8a\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u51e6\u7406\uff08\u4f8b\uff1a\u65e5\u4ed8\u3001\u6570\u5024\uff09\n    $processedData = [];\n    $headers = array_shift($rawData); \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u53d6\u5f97\n    \n    foreach ($rawData as $row) {\n        $processedRow = [];\n        foreach ($headers as $index =&gt; $header) {\n            $value = $row[$index];\n            \n            \/\/ \u30c7\u30fc\u30bf\u578b\u306b\u5fdc\u3058\u305f\u51e6\u7406\n            switch ($header) {\n                case '\u65e5\u4ed8':\n                    \/\/ Excel\u306e\u65e5\u4ed8\u5f62\u5f0f\u3092\u5909\u63db\n                    if (is_numeric($value)) {\n                        $value = Date::excelToDateTimeObject($value)-&gt;format('Y-m-d');\n                    }\n                    break;\n                    \n                case '\u91d1\u984d':\n                    \/\/ \u901a\u8ca8\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\uff08\u4f8b\uff1a\u00a51,000 \u2192 1000\uff09\n                    $value = preg_replace('\/[^\\d.-]\/', '', $value);\n                    $value = (float)$value;\n                    break;\n                    \n                case '\u30d1\u30fc\u30bb\u30f3\u30c8':\n                    \/\/ \u30d1\u30fc\u30bb\u30f3\u30c8\u5909\u63db\uff08\u4f8b\uff1a10% \u2192 0.1\uff09\n                    if (strpos($value, '%') !== false) {\n                        $value = str_replace('%', '', $value);\n                        $value = (float)$value \/ 100;\n                    }\n                    break;\n            }\n            \n            $processedRow[$header] = $value;\n        }\n        $processedData[] = $processedRow;\n    }\n    \n    \/\/ \u7d50\u679c\u8868\u793a\n    echo '&lt;pre&gt;';\n    print_r($processedData);\n    echo '&lt;\/pre&gt;';\n    \n} catch (Exception $e) {\n    echo '\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ' . $e-&gt;getMessage();\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>\u9ad8\u5ea6\u306a\u4f8b: \u8907\u6570\u30b7\u30fc\u30c8\u306eCSV\u751f\u6210<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\nrequire 'vendor\/autoload.php';\n\nuse PhpOffice\\PhpSpreadsheet\\Spreadsheet;\nuse PhpOffice\\PhpSpreadsheet\\Writer\\Csv;\n\ntry {\n    \/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3057\u305f\u3068\u4eee\u5b9a\n    $departmentData = [\n        '\u55b6\u696d\u90e8' =&gt; [\n            ['id' =&gt; 1, 'name' =&gt; '\u9234\u6728\u4e00\u90ce', 'email' =&gt; 'suzuki@example.com'],\n            ['id' =&gt; 2, 'name' =&gt; '\u4f50\u85e4\u4e8c\u90ce', 'email' =&gt; 'sato@example.com'],\n        ],\n        '\u958b\u767a\u90e8' =&gt; [\n            ['id' =&gt; 3, 'name' =&gt; '\u7530\u4e2d\u4e09\u90ce', 'email' =&gt; 'tanaka@example.com'],\n            ['id' =&gt; 4, 'name' =&gt; '\u5c71\u672c\u56db\u90ce', 'email' =&gt; 'yamamoto@example.com'],\n        ],\n    ];\n    \n    \/\/ \u65b0\u3057\u3044\u30b9\u30d7\u30ec\u30c3\u30c9\u30b7\u30fc\u30c8\u3092\u4f5c\u6210\n    $spreadsheet = new Spreadsheet();\n    \n    \/\/ \u5404\u90e8\u7f72\u306e\u30c7\u30fc\u30bf\u3092\u5225\u3005\u306e\u30b7\u30fc\u30c8\u306b\n    $sheetIndex = 0;\n    foreach ($departmentData as $department =&gt; $members) {\n        \/\/ \u6700\u521d\u306e\u30b7\u30fc\u30c8\u4ee5\u5916\u306f\u65b0\u898f\u4f5c\u6210\n        if ($sheetIndex &gt; 0) {\n            $spreadsheet-&gt;createSheet();\n        }\n        \n        \/\/ \u30b7\u30fc\u30c8\u3092\u9078\u629e\u3057\u3066\u30bf\u30a4\u30c8\u30eb\u3092\u8a2d\u5b9a\n        $sheet = $spreadsheet-&gt;setActiveSheetIndex($sheetIndex);\n        $sheet-&gt;setTitle($department);\n        \n        \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\n        $sheet-&gt;setCellValue('A1', 'ID');\n        $sheet-&gt;setCellValue('B1', '\u540d\u524d');\n        $sheet-&gt;setCellValue('C1', '\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9');\n        \n        \/\/ \u30c7\u30fc\u30bf\u3092\u8a2d\u5b9a\n        $row = 2;\n        foreach ($members as $member) {\n            $sheet-&gt;setCellValue('A' . $row, $member['id']);\n            $sheet-&gt;setCellValue('B' . $row, $member['name']);\n            $sheet-&gt;setCellValue('C' . $row, $member['email']);\n            $row++;\n        }\n        \n        $sheetIndex++;\n    }\n    \n    \/\/ \u5404\u30b7\u30fc\u30c8\u3092CSV\u3068\u3057\u3066\u4fdd\u5b58\n    for ($i = 0; $i &lt; $spreadsheet-&gt;getSheetCount(); $i++) {\n        $spreadsheet-&gt;setActiveSheetIndex($i);\n        $department = $spreadsheet-&gt;getActiveSheet()-&gt;getTitle();\n        \n        $writer = new Csv($spreadsheet);\n        $writer-&gt;setDelimiter(',');\n        $writer-&gt;setEnclosure('\"');\n        $writer-&gt;setLineEnding(\"\\r\\n\");\n        $writer-&gt;setSheetIndex($i);\n        $writer-&gt;setUseBOM(true);\n        \n        $writer-&gt;save(\"department_{$department}.csv\");\n        echo \"{$department}\u306eCSV\u3092\u751f\u6210\u3057\u307e\u3057\u305f&lt;br&gt;\";\n    }\n    \n} catch (Exception $e) {\n    echo '\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ' . $e-&gt;getMessage();\n}\n?&gt;\n<\/pre>\n\n\n\n<p>PhpSpreadsheet\u3092\u4f7f\u7528\u3059\u308b\u30e1\u30ea\u30c3\u30c8\u306f\u3001\u5358\u7d14\u306aCSV\u51e6\u7406\u3060\u3051\u3067\u306a\u304f\u3001\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u5909\u63db\u3001\u66f8\u5f0f\u8a2d\u5b9a\u3001\u8907\u6570\u30b7\u30fc\u30c8\u64cd\u4f5c\u306a\u3069\u3001Excel\u306e\u6a5f\u80fd\u306b\u8fd1\u3044\u64cd\u4f5c\u304c\u53ef\u80fd\u306a\u70b9\u3067\u3059\u3002\u7279\u306b\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b1\u30fc\u30b9\u3067\u5a01\u529b\u3092\u767a\u63ee\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CSV\u3068Excel (.xlsx, .xls) \u306e\u76f8\u4e92\u5909\u63db\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u65e5\u4ed8\u3084\u901a\u8ca8\u306a\u3069\u7279\u6b8a\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u6301\u3064\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u8868\u8a08\u7b97\u306e\u3088\u3046\u306a\u8a08\u7b97\u5f0f\u3084\u95a2\u6570\u3092\u542b\u3080\u30c7\u30fc\u30bf\u3092\u6271\u3046\u5834\u5408<\/li>\n\n\n\n<li>\u30b0\u30e9\u30d5\u3084\u56f3\u8868\u3092\u542b\u3080\u9ad8\u5ea6\u306a\u30ec\u30dd\u30fc\u30c8\u751f\u6210\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n<\/ul>\n\n\n\n<p>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u304c\u4ed6\u306e\u65b9\u6cd5\u3088\u308a\u591a\u304f\u306a\u308b\u50be\u5411\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u8907\u96d1\u306a\u30b9\u30d7\u30ec\u30c3\u30c9\u30b7\u30fc\u30c8\u64cd\u4f5c\u304c\u5fc5\u8981\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u3053\u306e\u6295\u8cc7\u306b\u898b\u5408\u3046\u4fa1\u5024\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306bExcel\u30d5\u30a1\u30a4\u30eb\u3068\u306e\u4e92\u63db\u6027\u304c\u91cd\u8981\u306a\u696d\u52d9\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001PhpSpreadsheet\u306f\u6700\u9069\u306a\u9078\u629e\u80a2\u3068\u306a\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-21\">\u65b9\u6cd56: \u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u306b\u3088\u308b\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044CSV\u8aad\u307f\u8fbc\u307f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-22\">\u5927\u5bb9\u91cfCSV\u30d5\u30a1\u30a4\u30eb\u3092\u6271\u3046\u969b\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p>\u975e\u5e38\u306b\u5927\u304d\u306aCSV\u30d5\u30a1\u30a4\u30eb\uff08\u6570\u767eMB\u301c\u6570GB\uff09\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u3001\u3053\u308c\u307e\u3067\u7d39\u4ecb\u3057\u305f\u65b9\u6cd5\u3067\u306f\u30e1\u30e2\u30ea\u4e0d\u8db3\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002PHP\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306b\u95a2\u4fc2\u306a\u304f\u52b9\u7387\u7684\u306bCSV\u3092\u8aad\u307f\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u306e\u6700\u5927\u306e\u7279\u5fb4\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u5168\u4f53\u3092\u30e1\u30e2\u30ea\u306b\u8aad\u307f\u8fbc\u307e\u305a\u306b\u3001\u5fc5\u8981\u306a\u90e8\u5206\u3060\u3051\u3092\u9806\u6b21\u51e6\u7406\u3057\u3066\u3044\u304f\u70b9\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u306e\u4e3b\u306a\u30e1\u30ea\u30c3\u30c8:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u975e\u5e38\u306b\u5927\u304d\u306a\u30d5\u30a1\u30a4\u30eb\u3067\u3082\u30e1\u30e2\u30ea\u6d88\u8cbb\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3089\u308c\u308b<\/li>\n\n\n\n<li>\u51e6\u7406\u306e\u958b\u59cb\u304c\u65e9\u3044\uff08\u5168\u4f53\u3092\u8aad\u307f\u8fbc\u3080\u5fc5\u8981\u304c\u306a\u3044\uff09<\/li>\n\n\n\n<li>\u30ea\u30bd\u30fc\u30b9\u306e\u52b9\u7387\u7684\u306a\u5229\u7528<\/li>\n\n\n\n<li>\u30b5\u30fc\u30d0\u30fc\u8ca0\u8377\u306e\u8efd\u6e1b<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-23\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u6280\u6cd5<\/h3>\n\n\n\n<p><strong>1. fgetcsv()\u3092\u4f7f\u3063\u305f\u57fa\u672c\u7684\u306a\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u5927\u5bb9\u91cfCSV\u30d5\u30a1\u30a4\u30eb\u51e6\u7406\u306e\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u8868\u793a\u3059\u308b\u95a2\u6570\nfunction showMemoryUsage($message = '') {\n    if ($message) {\n        echo $message . ': ';\n    }\n    echo round(memory_get_usage() \/ 1024 \/ 1024, 2) . ' MB' . PHP_EOL;\n}\n\n\/\/ \u51e6\u7406\u958b\u59cb\u6642\u306e\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\nshowMemoryUsage('\u958b\u59cb\u6642');\n\n\/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n$handle = fopen('large_data.csv', 'r');\nif (!$handle) {\n    die('\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u307e\u305b\u3093\u3067\u3057\u305f');\n}\n\n\/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u8aad\u307f\u8fbc\u3080\n$headers = fgetcsv($handle);\n\n\/\/ \u51e6\u7406\u30ab\u30a6\u30f3\u30bf\u30fc\n$count = 0;\n\n\/\/ \u958b\u59cb\u6642\u9593\n$startTime = microtime(true);\n\n\/\/ 1\u884c\u305a\u3064\u51e6\u7406\nwhile (($row = fgetcsv($handle)) !== FALSE) {\n    \/\/ \u7a7a\u884c\u306e\u30b9\u30ad\u30c3\u30d7\n    if (empty($row) || count($row) &lt;= 1 &amp;&amp; empty($row[0])) {\n        continue;\n    }\n    \n    \/\/ \u30d8\u30c3\u30c0\u30fc\u3068\u5024\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u9023\u60f3\u914d\u5217\u306b\n    $data = array_combine($headers, $row);\n    \n    \/\/ \u3053\u3053\u3067\u5404\u884c\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\n    \/\/ \uff08\u4f8b\uff1a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u633f\u5165\u3001\u96c6\u8a08\u51e6\u7406\u306a\u3069\uff09\n    \/\/ process_data($data); \/\/ \u5b9f\u969b\u306e\u51e6\u7406\u95a2\u6570\n    \n    $count++;\n    \n    \/\/ \u9032\u6357\u8868\u793a\uff0810,000\u884c\u3054\u3068\uff09\n    if ($count % 10000 === 0) {\n        showMemoryUsage($count . '\u884c\u51e6\u7406\u6e08\u307f');\n    }\n}\n\n\/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u9589\u3058\u308b\nfclose($handle);\n\n\/\/ \u51e6\u7406\u6642\u9593\n$processingTime = microtime(true) - $startTime;\n\n\/\/ \u7d50\u679c\u5831\u544a\nshowMemoryUsage('\u7d42\u4e86\u6642');\necho '\u5408\u8a08 ' . $count . ' \u884c\u3092\u51e6\u7406\u3057\u307e\u3057\u305f' . PHP_EOL;\necho '\u51e6\u7406\u6642\u9593: ' . round($processingTime, 2) . ' \u79d2' . PHP_EOL;\n?&gt;\n<\/pre>\n\n\n\n<p><strong>2. \u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u4f7f\u3063\u305f\u3088\u308a\u6d17\u7df4\u3055\u308c\u305f\u30a2\u30d7\u30ed\u30fc\u30c1:<\/strong><\/p>\n\n\n\n<p>PHP 5.5\u4ee5\u964d\u3067\u306f\u3001\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u3088\u308a\u6d17\u7df4\u3055\u308c\u305f\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u306f\u3001\u5927\u304d\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u6271\u3046\u969b\u306b\u7279\u306b\u6709\u7528\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ CSV\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\nfunction readCsv($filename, $skipHeader = true) {\n    $handle = fopen($filename, 'r');\n    if (!$handle) {\n        throw new Exception('\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u307e\u305b\u3093\u3067\u3057\u305f: ' . $filename);\n    }\n    \n    \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u8aad\u307f\u8fbc\u3080\n    $headers = fgetcsv($handle);\n    \n    \/\/ \u30b9\u30ad\u30c3\u30d7\u30d5\u30e9\u30b0\u304cfalse\u306e\u5834\u5408\u306f\u30d8\u30c3\u30c0\u30fc\u884c\u3082\u8fd4\u3059\n    if (!$skipHeader) {\n        yield $headers;\n    }\n    \n    \/\/ \u30c7\u30fc\u30bf\u884c\u30921\u884c\u305a\u3064\u8aad\u307f\u8fbc\u3093\u3067yield\u3067\u8fd4\u3059\n    while (($row = fgetcsv($handle)) !== FALSE) {\n        \/\/ \u7a7a\u884c\u306e\u30b9\u30ad\u30c3\u30d7\n        if (empty($row) || count($row) &lt;= 1 &amp;&amp; empty($row[0])) {\n            continue;\n        }\n        \n        \/\/ \u9023\u60f3\u914d\u5217\u3068\u3057\u3066\u8fd4\u3059\n        yield array_combine($headers, $row);\n    }\n    \n    fclose($handle);\n}\n\n\/\/ \u4f7f\u7528\u4f8b\ntry {\n    \/\/ \u958b\u59cb\u6642\u306e\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\n    echo '\u958b\u59cb\u6642\u30e1\u30e2\u30ea: ' . round(memory_get_usage() \/ 1024 \/ 1024, 2) . ' MB' . PHP_EOL;\n    \n    \/\/ \u30ab\u30a6\u30f3\u30bf\u30fc\u3068\u958b\u59cb\u6642\u9593\n    $count = 0;\n    $startTime = microtime(true);\n    \n    \/\/ \u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u4f7f\u3063\u3066\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\n    foreach (readCsv('large_data.csv') as $row) {\n        \/\/ \u3053\u3053\u3067\u5404\u884c\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\n        \/\/ \uff08\u4f8b\uff1a\u4ee5\u4e0b\u306f\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u30c9\u30e1\u30a4\u30f3\u96c6\u8a08\u306e\u4f8b\uff09\n        $email = $row['email'] ?? '';\n        if ($email &amp;&amp; preg_match('\/@([^@]+)$\/', $email, $matches)) {\n            $domain = $matches[1];\n            \/\/ \u30c9\u30e1\u30a4\u30f3\u96c6\u8a08\u306a\u3069\u306e\u51e6\u7406...\n        }\n        \n        $count++;\n        \n        \/\/ \u9032\u6357\u8868\u793a\uff0810,000\u884c\u3054\u3068\uff09\n        if ($count % 10000 === 0) {\n            echo $count . '\u884c\u51e6\u7406\u6e08\u307f - \u30e1\u30e2\u30ea: ';\n            echo round(memory_get_usage() \/ 1024 \/ 1024, 2) . ' MB' . PHP_EOL;\n        }\n    }\n    \n    \/\/ \u51e6\u7406\u6642\u9593\n    $processingTime = microtime(true) - $startTime;\n    \n    \/\/ \u7d50\u679c\u5831\u544a\n    echo '\u7d42\u4e86\u6642\u30e1\u30e2\u30ea: ' . round(memory_get_usage() \/ 1024 \/ 1024, 2) . ' MB' . PHP_EOL;\n    echo '\u5408\u8a08 ' . $count . ' \u884c\u3092\u51e6\u7406\u3057\u307e\u3057\u305f' . PHP_EOL;\n    echo '\u51e6\u7406\u6642\u9593: ' . round($processingTime, 2) . ' \u79d2' . PHP_EOL;\n    \n} catch (Exception $e) {\n    echo '\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ' . $e-&gt;getMessage();\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>3. \u30d0\u30c3\u30c1\u51e6\u7406\u3092\u4f75\u7528\u3057\u305f\u9ad8\u5ea6\u306a\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406:<\/strong><\/p>\n\n\n\n<p>\u975e\u5e38\u306b\u5927\u304d\u306aCSV\u30d5\u30a1\u30a4\u30eb\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u3001\u30d0\u30c3\u30c1\u51e6\u7406\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u306a\u51e6\u7406\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3078\u306e\u4e00\u62ec\u633f\u5165\u3092\u884c\u3046\u5834\u5408\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3067CSV\u3092\u8aad\u307f\u8fbc\u3080\u95a2\u6570\nfunction readCsvBatch($filename, $batchSize = 1000) {\n    $handle = fopen($filename, 'r');\n    if (!$handle) {\n        throw new Exception('\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u307e\u305b\u3093\u3067\u3057\u305f: ' . $filename);\n    }\n    \n    \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u8aad\u307f\u8fbc\u3080\n    $headers = fgetcsv($handle);\n    \n    \/\/ \u30d0\u30c3\u30c1\u51e6\u7406\u7528\u306e\u914d\u5217\n    $batch = [];\n    $count = 0;\n    \n    \/\/ \u30c7\u30fc\u30bf\u884c\u3092\u8aad\u307f\u8fbc\u3080\n    while (($row = fgetcsv($handle)) !== FALSE) {\n        \/\/ \u7a7a\u884c\u306e\u30b9\u30ad\u30c3\u30d7\n        if (empty($row) || count($row) &lt;= 1 &amp;&amp; empty($row[0])) {\n            continue;\n        }\n        \n        \/\/ \u9023\u60f3\u914d\u5217\u306b\u5909\u63db\u3057\u3066\u30d0\u30c3\u30c1\u306b\u8ffd\u52a0\n        $batch[] = array_combine($headers, $row);\n        $count++;\n        \n        \/\/ \u30d0\u30c3\u30c1\u30b5\u30a4\u30ba\u306b\u9054\u3057\u305f\u3089yield\u3067\u8fd4\u3059\n        if ($count &gt;= $batchSize) {\n            yield $batch;\n            $batch = [];\n            $count = 0;\n        }\n    }\n    \n    \/\/ \u6b8b\u308a\u306e\u30c7\u30fc\u30bf\u3092\u8fd4\u3059\n    if (!empty($batch)) {\n        yield $batch;\n    }\n    \n    fclose($handle);\n}\n\ntry {\n    \/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\uff08PDO\u3092\u4f7f\u7528\uff09\n    $pdo = new PDO('mysql:host=localhost;dbname=myapp;charset=utf8', 'username', 'password');\n    $pdo-&gt;setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);\n    \n    \/\/ \u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5185\u3067\u30d0\u30c3\u30c1\u51e6\u7406\n    $batchSize = 1000; \/\/ \u4e00\u5ea6\u306b\u51e6\u7406\u3059\u308b\u884c\u6570\n    $totalProcessed = 0;\n    \n    foreach (readCsvBatch('very_large_data.csv', $batchSize) as $batch) {\n        \/\/ \u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u958b\u59cb\n        $pdo-&gt;beginTransaction();\n        \n        try {\n            \/\/ \u30d7\u30ea\u30da\u30a2\u30c9\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u6e96\u5099\n            $stmt = $pdo-&gt;prepare('INSERT INTO users (id, name, email, age) VALUES (?, ?, ?, ?)');\n            \n            \/\/ \u30d0\u30c3\u30c1\u5185\u306e\u5404\u884c\u3092\u51e6\u7406\n            foreach ($batch as $row) {\n                $stmt-&gt;execute([\n                    $row['id'],\n                    $row['name'],\n                    $row['email'],\n                    $row['age']\n                ]);\n            }\n            \n            \/\/ \u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3092\u30b3\u30df\u30c3\u30c8\n            $pdo-&gt;commit();\n            \n            \/\/ \u51e6\u7406\u4ef6\u6570\u3092\u66f4\u65b0\n            $totalProcessed += count($batch);\n            echo $totalProcessed . '\u884c\u51e6\u7406\u5b8c\u4e86' . PHP_EOL;\n            \n        } catch (Exception $e) {\n            \/\/ \u30a8\u30e9\u30fc\u767a\u751f\u6642\u306f\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\n            $pdo-&gt;rollBack();\n            throw $e;\n        }\n    }\n    \n    echo '\u51e6\u7406\u5b8c\u4e86: \u5408\u8a08 ' . $totalProcessed . ' \u884c\u3092\u51e6\u7406\u3057\u307e\u3057\u305f' . PHP_EOL;\n    \n} catch (Exception $e) {\n    echo '\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ' . $e-&gt;getMessage();\n}\n?&gt;\n<\/pre>\n\n\n\n<p>\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u3092\u6d3b\u7528\u3059\u308b\u969b\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u5236\u9650\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3059\u308b<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u73fe\u5728\u306e\u30e1\u30e2\u30ea\u5236\u9650\u3092\u78ba\u8a8d\necho ini_get('memory_limit');\n\n\/\/ \u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5897\u3084\u3059\uff08\u5b9f\u884c\u6642\uff09\nini_set('memory_limit', '256M');<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4e0d\u8981\u306a\u30c7\u30fc\u30bf\u306f\u3059\u3050\u306b\u89e3\u653e\u3059\u308b<\/strong>\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5909\u6570\u3092\u660e\u793a\u7684\u306b\u89e3\u653e\nunset($largeArray);<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u51e6\u7406\u306e\u9032\u6357\u3092\u76e3\u8996\u3059\u308b<\/strong>\uff1a<br>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3084\u51e6\u7406\u6642\u9593\u3092\u5b9a\u671f\u7684\u306b\u51fa\u529b\u3059\u308b\u3053\u3068\u3067\u3001\u554f\u984c\u306e\u65e9\u671f\u767a\u898b\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u3092\u7121\u52b9\u5316\u3059\u308b<\/strong>\uff1a <br>\u7279\u306b\u51fa\u529b\u304c\u9577\u6642\u9593\u7d9a\u304f\u5834\u5408\u306f\u3001\u51fa\u529b\u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u3092\u7121\u52b9\u306b\u3059\u308b\u3053\u3068\u3067\u3001\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u306b\u9032\u6357\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u3092\u7121\u52b9\u5316\nob_implicit_flush(true);\nob_end_flush();<\/pre>\n\n\n\n<p>\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u306f\u3001\u6570GB\u306eCSV\u30d5\u30a1\u30a4\u30eb\u3084\u3001\u6570\u767e\u4e07\u884c\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u306b\u7279\u306b\u6709\u52b9\u3067\u3059\u3002\u30e1\u30e2\u30ea\u52b9\u7387\u3068\u51e6\u7406\u901f\u5ea6\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u53d6\u308a\u306a\u304c\u3089\u3001\u5b89\u5b9a\u3057\u305f\u51e6\u7406\u3092\u5b9f\u73fe\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-24\">\u65b9\u6cd57: PHP\u3068Ajax\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u9023\u643aCSV\u51e6\u7406<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-25\">\u30d6\u30e9\u30a6\u30b6\u304b\u3089CSV\u30d5\u30a1\u30a4\u30eb\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u3066\u51e6\u7406\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30d6\u30e9\u30a6\u30b6\u304b\u3089CSV\u30d5\u30a1\u30a4\u30eb\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u3001\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u306ePHP\u3067\u51e6\u7406\u3059\u308b\u30b1\u30fc\u30b9\u304c\u591a\u304f\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u5834\u5408\u3001PHP\u3068JavaScript\uff08Ajax\uff09\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u52b9\u7387\u7684\u306a\u51e6\u7406\u3092\u4e21\u7acb\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u57fa\u672c\u7684\u306aCSV\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u30d5\u30a9\u30fc\u30e0:<\/strong><\/p>\n\n\n\n<p>\u307e\u305a\u3001\u30b7\u30f3\u30d7\u30eb\u306aHTML\u30d5\u30a9\u30fc\u30e0\u3067CSV\u30d5\u30a1\u30a4\u30eb\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3059\u308b\u65b9\u6cd5\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!DOCTYPE html&gt;\n&lt;html&gt;\n&lt;head&gt;\n    &lt;meta charset=\"UTF-8\"&gt;\n    &lt;title&gt;CSV\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9&lt;\/title&gt;\n&lt;\/head&gt;\n&lt;body&gt;\n    &lt;h1&gt;CSV\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9&lt;\/h1&gt;\n    \n    &lt;form action=\"process_csv.php\" method=\"post\" enctype=\"multipart\/form-data\"&gt;\n        &lt;div&gt;\n            &lt;label for=\"csv_file\"&gt;CSV\u30d5\u30a1\u30a4\u30eb\u3092\u9078\u629e:&lt;\/label&gt;\n            &lt;input type=\"file\" name=\"csv_file\" id=\"csv_file\" accept=\".csv\"&gt;\n        &lt;\/div&gt;\n        &lt;div style=\"margin-top: 10px;\"&gt;\n            &lt;input type=\"submit\" value=\"\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\"&gt;\n        &lt;\/div&gt;\n    &lt;\/form&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;\n<\/pre>\n\n\n\n<p><strong>\u30b5\u30fc\u30d0\u30fc\u5074\u306e\u51e6\u7406\uff08process_csv.php\uff09:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\nif (!isset($_FILES['csv_file']) || $_FILES['csv_file']['error'] !== UPLOAD_ERR_OK) {\n    $error = $_FILES['csv_file']['error'] ?? '\u30d5\u30a1\u30a4\u30eb\u304c\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3055\u308c\u3066\u3044\u307e\u305b\u3093';\n    die('\u30a8\u30e9\u30fc: ' . $error);\n}\n\n\/\/ \u30d5\u30a1\u30a4\u30eb\u30bf\u30a4\u30d7\u306e\u30c1\u30a7\u30c3\u30af\uff08\u7c21\u6613\u7248\uff09\n$mimeType = mime_content_type($_FILES['csv_file']['tmp_name']);\nif ($mimeType !== 'text\/csv' &amp;&amp; $mimeType !== 'text\/plain') {\n    die('\u30a8\u30e9\u30fc: CSV\u30d5\u30a1\u30a4\u30eb\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3057\u3066\u304f\u3060\u3055\u3044');\n}\n\n\/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n$handle = fopen($_FILES['csv_file']['tmp_name'], 'r');\nif (!$handle) {\n    die('\u30a8\u30e9\u30fc: \u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u307e\u305b\u3093\u3067\u3057\u305f');\n}\n\n\/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u8aad\u307f\u8fbc\u3080\n$headers = fgetcsv($handle);\n\n\/\/ \u51e6\u7406\u7d50\u679c\u3092\u683c\u7d0d\u3059\u308b\u914d\u5217\n$data = [];\n\n\/\/ \u30c7\u30fc\u30bf\u884c\u3092\u8aad\u307f\u8fbc\u3080\nwhile (($row = fgetcsv($handle)) !== FALSE) {\n    \/\/ \u7a7a\u884c\u306e\u30b9\u30ad\u30c3\u30d7\n    if (empty($row) || count($row) &lt;= 1 &amp;&amp; empty($row[0])) {\n        continue;\n    }\n    \n    \/\/ \u30d8\u30c3\u30c0\u30fc\u3068\u5024\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u9023\u60f3\u914d\u5217\u306b\n    $data[] = array_combine($headers, $row);\n}\n\n\/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u9589\u3058\u308b\nfclose($handle);\n\n\/\/ \u7d50\u679c\u3092\u8868\u793a\necho '&lt;h2&gt;\u51e6\u7406\u7d50\u679c&lt;\/h2&gt;';\necho '&lt;p&gt;' . count($data) . '\u4ef6\u306e\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u307f\u307e\u3057\u305f\u3002&lt;\/p&gt;';\n\necho '&lt;table border=\"1\"&gt;';\n\/\/ \u30d8\u30c3\u30c0\u30fc\u884c\necho '&lt;tr&gt;';\nforeach ($headers as $header) {\n    echo '&lt;th&gt;' . htmlspecialchars($header) . '&lt;\/th&gt;';\n}\necho '&lt;\/tr&gt;';\n\n\/\/ \u30c7\u30fc\u30bf\u884c\nforeach ($data as $row) {\n    echo '&lt;tr&gt;';\n    foreach ($row as $value) {\n        echo '&lt;td&gt;' . htmlspecialchars($value) . '&lt;\/td&gt;';\n    }\n    echo '&lt;\/tr&gt;';\n}\necho '&lt;\/table&gt;';\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-26\">\u975e\u540c\u671f\u51e6\u7406\u3092\u6d3b\u7528\u3057\u305f\u30e6\u30fc\u30b6\u30fc\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306aCSV\u8aad\u307f\u8fbc\u307f\u5b9f\u88c5<\/h3>\n\n\n\n<p>\u3088\u308a\u9ad8\u5ea6\u306a\u5b9f\u88c5\u3068\u3057\u3066\u3001Ajax\uff08\u975e\u540c\u671f\u901a\u4fe1\uff09\u3092\u4f7f\u7528\u3057\u3066\u3001\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002\u3053\u306e\u65b9\u6cd5\u306e\u4e3b\u306a\u30e1\u30ea\u30c3\u30c8\u306f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30da\u30fc\u30b8\u9077\u79fb\u306a\u3057\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9<\/li>\n\n\n\n<li>\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u306e\u9032\u6357\u8868\u793a<\/li>\n\n\n\n<li>\u5927\u304d\u306a\u30d5\u30a1\u30a4\u30eb\u306e\u5206\u5272\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9<\/li>\n\n\n\n<li>\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u3067\u306e\u51e6\u7406\u5b9f\u884c<\/li>\n<\/ul>\n\n\n\n<p><strong>\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\uff08HTML\/JavaScript\uff09:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!DOCTYPE html&gt;\n&lt;html&gt;\n&lt;head&gt;\n    &lt;meta charset=\"UTF-8\"&gt;\n    &lt;title&gt;Ajax\u3092\u4f7f\u3063\u305fCSV\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9&lt;\/title&gt;\n    &lt;style&gt;\n        .progress-bar {\n            width: 100%;\n            background-color: #f0f0f0;\n            padding: 3px;\n            border-radius: 3px;\n            box-shadow: inset 0 1px 3px rgba(0, 0, 0, .2);\n        }\n        .progress-bar-fill {\n            height: 22px;\n            background-color: #4CAF50;\n            border-radius: 3px;\n            transition: width 0.5s ease;\n            width: 0%;\n        }\n        #result-container {\n            margin-top: 20px;\n            border: 1px solid #ddd;\n            padding: 10px;\n            display: none;\n        }\n        .error-message {\n            color: red;\n            font-weight: bold;\n        }\n    &lt;\/style&gt;\n&lt;\/head&gt;\n&lt;body&gt;\n    &lt;h1&gt;CSV\u30d5\u30a1\u30a4\u30eb\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\uff08Ajax\u7248\uff09&lt;\/h1&gt;\n    \n    &lt;div&gt;\n        &lt;label for=\"csv_file\"&gt;CSV\u30d5\u30a1\u30a4\u30eb\u3092\u9078\u629e:&lt;\/label&gt;\n        &lt;input type=\"file\" name=\"csv_file\" id=\"csv_file\" accept=\".csv\"&gt;\n    &lt;\/div&gt;\n    \n    &lt;div style=\"margin-top: 10px;\"&gt;\n        &lt;button id=\"upload-btn\"&gt;\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9&lt;\/button&gt;\n    &lt;\/div&gt;\n    \n    &lt;div id=\"progress-container\" style=\"margin-top: 15px; display: none;\"&gt;\n        &lt;p&gt;\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u9032\u6357:&lt;\/p&gt;\n        &lt;div class=\"progress-bar\"&gt;\n            &lt;div class=\"progress-bar-fill\" id=\"progress\"&gt;&lt;\/div&gt;\n        &lt;\/div&gt;\n        &lt;p id=\"status\"&gt;\u6e96\u5099\u4e2d...&lt;\/p&gt;\n    &lt;\/div&gt;\n    \n    &lt;div id=\"result-container\"&gt;\n        &lt;h2&gt;\u51e6\u7406\u7d50\u679c&lt;\/h2&gt;\n        &lt;div id=\"result-content\"&gt;&lt;\/div&gt;\n    &lt;\/div&gt;\n    \n    &lt;script&gt;\n    document.addEventListener('DOMContentLoaded', function() {\n        const uploadBtn = document.getElementById('upload-btn');\n        const fileInput = document.getElementById('csv_file');\n        const progressContainer = document.getElementById('progress-container');\n        const progressBar = document.getElementById('progress');\n        const statusText = document.getElementById('status');\n        const resultContainer = document.getElementById('result-container');\n        const resultContent = document.getElementById('result-content');\n        \n        uploadBtn.addEventListener('click', function() {\n            \/\/ \u30d5\u30a1\u30a4\u30eb\u30c1\u30a7\u30c3\u30af\n            if (!fileInput.files.length) {\n                alert('CSV\u30d5\u30a1\u30a4\u30eb\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044');\n                return;\n            }\n            \n            const file = fileInput.files[0];\n            \n            \/\/ CSV\u30d5\u30a1\u30a4\u30eb\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\n            if (file.type !== 'text\/csv' &amp;&amp; !file.name.endsWith('.csv')) {\n                alert('CSV\u30d5\u30a1\u30a4\u30eb\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044');\n                return;\n            }\n            \n            \/\/ FormData\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\n            const formData = new FormData();\n            formData.append('csv_file', file);\n            \n            \/\/ XMLHttpRequest\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\n            const xhr = new XMLHttpRequest();\n            \n            \/\/ \u30d7\u30ed\u30b0\u30ec\u30b9\u30a4\u30d9\u30f3\u30c8\u3092\u30ea\u30c3\u30b9\u30f3\n            xhr.upload.addEventListener('progress', function(e) {\n                if (e.lengthComputable) {\n                    const percentComplete = (e.loaded \/ e.total) * 100;\n                    progressBar.style.width = percentComplete + '%';\n                    statusText.textContent = '\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u4e2d: ' + Math.round(percentComplete) + '%';\n                }\n            });\n            \n            \/\/ \u30ec\u30b9\u30dd\u30f3\u30b9\u51e6\u7406\n            xhr.onreadystatechange = function() {\n                if (xhr.readyState === 4) {\n                    progressContainer.style.display = 'none';\n                    \n                    if (xhr.status === 200) {\n                        try {\n                            const response = JSON.parse(xhr.responseText);\n                            \n                            if (response.success) {\n                                \/\/ \u6210\u529f\u6642\u306e\u51e6\u7406\n                                resultContent.innerHTML = `\n                                    &lt;p&gt;${response.count}\u4ef6\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3057\u307e\u3057\u305f\u3002&lt;\/p&gt;\n                                    &lt;table border=\"1\"&gt;\n                                        &lt;thead&gt;\n                                            &lt;tr&gt;\n                                                ${response.headers.map(h =&gt; `&lt;th&gt;${h}&lt;\/th&gt;`).join('')}\n                                            &lt;\/tr&gt;\n                                        &lt;\/thead&gt;\n                                        &lt;tbody&gt;\n                                            ${response.preview.map(row =&gt; \n                                                `&lt;tr&gt;${Object.values(row).map(val =&gt; \n                                                    `&lt;td&gt;${val}&lt;\/td&gt;`).join('')}&lt;\/tr&gt;`\n                                            ).join('')}\n                                        &lt;\/tbody&gt;\n                                    &lt;\/table&gt;\n                                    ${response.count &gt; response.preview.length ? \n                                        `&lt;p&gt;\u203b ${response.preview.length}\u4ef6\u306e\u307f\u8868\u793a\uff08\u5168${response.count}\u4ef6\uff09&lt;\/p&gt;` : ''}\n                                `;\n                            } else {\n                                \/\/ \u30a8\u30e9\u30fc\u6642\u306e\u51e6\u7406\n                                resultContent.innerHTML = `&lt;p class=\"error-message\"&gt;\u30a8\u30e9\u30fc: ${response.error}&lt;\/p&gt;`;\n                            }\n                            \n                            resultContainer.style.display = 'block';\n                            \n                        } catch (e) {\n                            resultContent.innerHTML = '&lt;p class=\"error-message\"&gt;\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u89e3\u6790\u306b\u5931\u6557\u3057\u307e\u3057\u305f&lt;\/p&gt;';\n                            resultContainer.style.display = 'block';\n                        }\n                    } else {\n                        resultContent.innerHTML = `&lt;p class=\"error-message\"&gt;\u30a8\u30e9\u30fc: ${xhr.status} ${xhr.statusText}&lt;\/p&gt;`;\n                        resultContainer.style.display = 'block';\n                    }\n                }\n            };\n            \n            \/\/ \u30ea\u30af\u30a8\u30b9\u30c8\u9001\u4fe1\n            xhr.open('POST', 'process_csv_ajax.php', true);\n            xhr.send(formData);\n            \n            \/\/ \u30d7\u30ed\u30b0\u30ec\u30b9\u30d0\u30fc\u3092\u8868\u793a\n            progressBar.style.width = '0%';\n            statusText.textContent = '\u6e96\u5099\u4e2d...';\n            progressContainer.style.display = 'block';\n            resultContainer.style.display = 'none';\n        });\n    });\n    &lt;\/script&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;\n<\/pre>\n\n\n\n<p><strong>\u30b5\u30fc\u30d0\u30fc\u5074\u306e\u51e6\u7406\uff08process_csv_ajax.php\uff09:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ JSON\u5f62\u5f0f\u3067\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u8fd4\u3059\nheader('Content-Type: application\/json');\n\ntry {\n    \/\/ \u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\n    if (!isset($_FILES['csv_file']) || $_FILES['csv_file']['error'] !== UPLOAD_ERR_OK) {\n        throw new Exception('\u30d5\u30a1\u30a4\u30eb\u306e\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u306b\u5931\u6557\u3057\u307e\u3057\u305f');\n    }\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u60c5\u5831\n    $fileTmpPath = $_FILES['csv_file']['tmp_name'];\n    $fileName = $_FILES['csv_file']['name'];\n    $fileSize = $_FILES['csv_file']['size'];\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u30bf\u30a4\u30d7\u306e\u30c1\u30a7\u30c3\u30af\uff08\u7c21\u6613\u7248\uff09\n    $mimeType = mime_content_type($fileTmpPath);\n    if ($mimeType !== 'text\/csv' &amp;&amp; $mimeType !== 'text\/plain') {\n        throw new Exception('CSV\u30d5\u30a1\u30a4\u30eb\u5f62\u5f0f\u304c\u6b63\u3057\u304f\u3042\u308a\u307e\u305b\u3093');\n    }\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306e\u30c1\u30a7\u30c3\u30af\uff08\u4f8b: 10MB\u4ee5\u4e0b\uff09\n    $maxFileSize = 10 * 1024 * 1024; \/\/ 10MB\n    if ($fileSize &gt; $maxFileSize) {\n        throw new Exception('\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u304c\u5927\u304d\u3059\u304e\u307e\u3059\uff08\u6700\u592710MB\uff09');\n    }\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n    $handle = fopen($fileTmpPath, 'r');\n    if (!$handle) {\n        throw new Exception('\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u307e\u305b\u3093\u3067\u3057\u305f');\n    }\n    \n    \/\/ \u6587\u5b57\u30b3\u30fc\u30c9\u81ea\u52d5\u691c\u51fa\u3068\u5909\u63db\uff08\u30aa\u30d7\u30b7\u30e7\u30f3\uff09\n    $firstLine = fgets($handle);\n    rewind($handle);\n    \n    $encoding = mb_detect_encoding($firstLine, ['UTF-8', 'SJIS', 'EUC-JP'], true);\n    if ($encoding !== 'UTF-8') {\n        \/\/ \u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3066UTF-8\u306b\u5909\u63db\n        $tempFile = tempnam(sys_get_temp_dir(), 'csv_');\n        $tempHandle = fopen($tempFile, 'w');\n        \n        while (($line = fgets($handle)) !== false) {\n            $line = mb_convert_encoding($line, 'UTF-8', $encoding);\n            fputs($tempHandle, $line);\n        }\n        \n        fclose($handle);\n        fclose($tempHandle);\n        \n        $handle = fopen($tempFile, 'r');\n    }\n    \n    \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u8aad\u307f\u8fbc\u3080\n    $headers = fgetcsv($handle);\n    if (!$headers) {\n        throw new Exception('CSV\u30d8\u30c3\u30c0\u30fc\u306e\u8aad\u307f\u8fbc\u307f\u306b\u5931\u6557\u3057\u307e\u3057\u305f');\n    }\n    \n    \/\/ UTF-8\u306eBOM\u3092\u524a\u9664\uff08\u3082\u3057\u5b58\u5728\u3059\u308c\u3070\uff09\n    if (isset($headers[0]) &amp;&amp; substr($headers[0], 0, 3) === \"\\xEF\\xBB\\xBF\") {\n        $headers[0] = substr($headers[0], 3);\n    }\n    \n    \/\/ \u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\n    $data = [];\n    while (($row = fgetcsv($handle)) !== FALSE) {\n        \/\/ \u7a7a\u884c\u306e\u30b9\u30ad\u30c3\u30d7\n        if (empty($row) || count($row) &lt;= 1 &amp;&amp; empty($row[0])) {\n            continue;\n        }\n        \n        \/\/ \u30ab\u30e9\u30e0\u6570\u304c\u30d8\u30c3\u30c0\u30fc\u3068\u4e00\u81f4\u3059\u308b\u304b\u78ba\u8a8d\n        if (count($row) === count($headers)) {\n            $data[] = array_combine($headers, $row);\n        }\n    }\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u9589\u3058\u308b\n    fclose($handle);\n    \n    \/\/ \u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308c\u3070\u524a\u9664\n    if (isset($tempFile) &amp;&amp; file_exists($tempFile)) {\n        unlink($tempFile);\n    }\n    \n    \/\/ \u30d7\u30ec\u30d3\u30e5\u30fc\u7528\u306b\u6700\u521d\u306e10\u884c\u3060\u3051\u53d6\u5f97\n    $preview = array_slice($data, 0, 10);\n    \n    \/\/ \u6210\u529f\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u8fd4\u3059\n    echo json_encode([\n        'success' =&gt; true,\n        'count' =&gt; count($data),\n        'headers' =&gt; $headers,\n        'preview' =&gt; $preview\n    ]);\n    \n} catch (Exception $e) {\n    \/\/ \u30a8\u30e9\u30fc\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u8fd4\u3059\n    echo json_encode([\n        'success' =&gt; false,\n        'error' =&gt; $e-&gt;getMessage()\n    ]);\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>\u5927\u898f\u6a21\u30d5\u30a1\u30a4\u30eb\u7528\u306e\u9032\u5316\u7248\uff1a\u5206\u5272\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3068\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u51e6\u7406<\/strong><\/p>\n\n\n\n<p>\u975e\u5e38\u306b\u5927\u304d\u306aCSV\u30d5\u30a1\u30a4\u30eb\uff08\u6570\u5341MB\u4ee5\u4e0a\uff09\u3092\u6271\u3046\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u52b9\u679c\u7684\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5206\u5272\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9<\/strong>: \u30d5\u30a1\u30a4\u30eb\u3092\u5c0f\u3055\u306a\u30c1\u30e3\u30f3\u30af\u306b\u5206\u5272\u3057\u3066\u9806\u6b21\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9<\/li>\n\n\n\n<li><strong>\u30bb\u30c3\u30b7\u30e7\u30f3\u7ba1\u7406<\/strong>: \u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u306e\u9032\u6357\u3092\u8ffd\u8de1<\/li>\n\n\n\n<li><strong>\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u51e6\u7406<\/strong>: \u6642\u9593\u306e\u304b\u304b\u308b\u51e6\u7406\u3092\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u3067\u5b9f\u884c<\/li>\n\n\n\n<li><strong>\u9032\u6357\u901a\u77e5<\/strong>: WebSocket\u3084\u30dd\u30fc\u30ea\u30f3\u30b0\u3067\u51e6\u7406\u72b6\u6cc1\u3092\u901a\u77e5<\/li>\n<\/ol>\n\n\n\n<p>\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u5074\u3067\u306f\u3001<a href=\"http:\/\/www.resumablejs.com\/\">Resumable.js<\/a>\u3084<a href=\"https:\/\/uppy.io\/\">Uppy<\/a>\u306a\u3069\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u5206\u5272\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3092\u7c21\u5358\u306b\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30b5\u30fc\u30d0\u30fc\u5074\u3067\u306f\u3001\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3059\u308b\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u30d1\u30bf\u30fc\u30f3\u304c\u4e00\u822c\u7684\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30ad\u30e5\u30fc\u30b7\u30b9\u30c6\u30e0<\/strong>: <a href=\"https:\/\/laravel.com\/docs\/queues\">Laravel Queue<\/a>\u3084<a href=\"http:\/\/gearman.org\/\">Gearman<\/a>\u306a\u3069\u3092\u4f7f\u7528<\/li>\n\n\n\n<li><strong>\u30bf\u30b9\u30af\u7ba1\u7406<\/strong>: \u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u30b8\u30e7\u30d6\u3068\u3057\u3066CSV\u51e6\u7406\u3092\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb<\/li>\n\n\n\n<li><strong>\u9032\u6357\u5831\u544a<\/strong>: \u51e6\u7406\u72b6\u6cc1\u3092DB\u3084\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u8a18\u9332\u3057\u3001\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u304c\u30dd\u30fc\u30ea\u30f3\u30b0\u3067\u53d6\u5f97<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001PHP\u3068Ajax\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306aCSV\u51e6\u7406\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u5927\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u3092\u6271\u3046\u30d3\u30b8\u30cd\u30b9\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u306e\u65b9\u6cd5\u304c\u5b9f\u52d9\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-27\">CSV\u8aad\u307f\u8fbc\u307f\u6642\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u554f\u984c\u3068\u89e3\u6c7a\u7b56<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-28\">\u65e5\u672c\u8a9eCSV\u7279\u6709\u306e\u6587\u5b57\u5316\u3051\u554f\u984c\u306e\u539f\u56e0\u3068\u5bfe\u51e6\u6cd5<\/h3>\n\n\n\n<p>\u65e5\u672c\u8a9e\u3092\u542b\u3080CSV\u30d5\u30a1\u30a4\u30eb\u3092\u6271\u3046\u969b\u3001\u6700\u3082\u983b\u7e41\u306b\u906d\u9047\u3059\u308b\u554f\u984c\u304c\u300c\u6587\u5b57\u5316\u3051\u300d\u3067\u3059\u3002\u3053\u308c\u306f\u4e3b\u306b\u3001CSV\u30d5\u30a1\u30a4\u30eb\u306e\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\uff08\u6587\u5b57\u30b3\u30fc\u30c9\uff09\u3068PHP\u306e\u51e6\u7406\u74b0\u5883\u306e\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u304c\u4e00\u81f4\u3057\u3066\u3044\u306a\u3044\u3053\u3068\u304c\u539f\u56e0\u3067\u3059\u3002\u65e5\u672c\u8a9eCSV\u306e\u4e3b\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u306b\u306f\u4ee5\u4e0b\u306e\u3082\u306e\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Shift-JIS (SJIS)<\/strong>: Windows\u3067\u4f5c\u6210\u3055\u308c\u305fCSV\u30d5\u30a1\u30a4\u30eb\u306e\u6a19\u6e96<\/li>\n\n\n\n<li><strong>EUC-JP<\/strong>: \u4e3b\u306b\u53e4\u3044UNIX\u30b7\u30b9\u30c6\u30e0\u3067\u4f7f\u7528<\/li>\n\n\n\n<li><strong>UTF-8<\/strong>: \u56fd\u969b\u6a19\u6e96\u3001\u8fd1\u5e74\u306f\u3053\u308c\u304c\u4e3b\u6d41\uff08BOM\u4ed8\u304d\u306e\u5834\u5408\u3082\u3042\u308b\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u304c\u6df7\u5728\u3059\u308b\u74b0\u5883\u3067CSV\u3092\u6271\u3046\u5834\u5408\u3001\u5bfe\u51e6\u65b9\u6cd5\u3092\u77e5\u3063\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u6587\u5b57\u5316\u3051\u306e\u4e3b\u306a\u539f\u56e0:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u4e0d\u4e00\u81f4<\/li>\n\n\n\n<li>BOM (Byte Order Mark) \u306e\u5b58\u5728<\/li>\n\n\n\n<li>PHP\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u8a2d\u5b9a\u306e\u8aa4\u308a<\/li>\n\n\n\n<li>CSV\u30d5\u30a1\u30a4\u30eb\u304c\u8907\u6570\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u3067\u6df7\u5728\u3057\u3066\u3044\u308b<\/li>\n<\/ol>\n\n\n\n<p><strong>\u57fa\u672c\u7684\u306a\u5bfe\u51e6\u6cd5:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ CSV\u30d5\u30a1\u30a4\u30eb\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u3092\u81ea\u52d5\u691c\u51fa\u3057\u3066\u8aad\u307f\u8fbc\u3080\u95a2\u6570\nfunction readCsvWithEncoding($filename, $toEncoding = 'UTF-8') {\n    \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n    $handle = fopen($filename, 'r');\n    if (!$handle) {\n        throw new Exception('\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u307e\u305b\u3093\u3067\u3057\u305f');\n    }\n    \n    \/\/ \u5148\u982d\u884c\u3092\u8aad\u307f\u8fbc\u3093\u3067\u6587\u5b57\u30b3\u30fc\u30c9\u691c\u51fa\n    $firstLine = fgets($handle);\n    rewind($handle);\n    \n    \/\/ \u691c\u51fa\u5bfe\u8c61\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u914d\u5217\n    $encodings = ['UTF-8', 'SJIS', 'EUC-JP', 'ASCII'];\n    \n    \/\/ \u6587\u5b57\u30b3\u30fc\u30c9\u3092\u691c\u51fa\n    $encoding = mb_detect_encoding($firstLine, $encodings, true);\n    if (!$encoding) {\n        \/\/ \u691c\u51fa\u3067\u304d\u306a\u3044\u5834\u5408\u306fSJIS\u3068\u4eee\u5b9a\uff08\u591a\u304f\u306e\u5834\u5408\u3001Windows\u306eCSV\uff09\n        $encoding = 'SJIS';\n    }\n    \n    \/\/ UTF-8\u306eBOM\u3092\u30c1\u30a7\u30c3\u30af\n    if ($encoding === 'UTF-8' &amp;&amp; substr($firstLine, 0, 3) === \"\\xEF\\xBB\\xBF\") {\n        \/\/ BOM\u3042\u308aUTF-8\u3068\u3057\u3066\u51e6\u7406\n        $hasBom = true;\n    } else {\n        $hasBom = false;\n    }\n    \n    \/\/ \u7d50\u679c\u3092\u683c\u7d0d\u3059\u308b\u914d\u5217\n    $data = [];\n    \n    \/\/ 1\u884c\u76ee\u304cBOM\u3042\u308a\u306e\u5834\u5408\u306f\u7279\u5225\u51e6\u7406\n    if ($hasBom) {\n        $row = fgetcsv($handle);\n        if ($row) {\n            \/\/ \u5148\u982d\u5217\u304b\u3089BOM\u3092\u524a\u9664\n            $row[0] = substr($row[0], 3);\n            $data[] = $row;\n        }\n    }\n    \n    \/\/ \u6b8b\u308a\u306e\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u307f\n    while (($row = fgetcsv($handle)) !== FALSE) {\n        \/\/ \u691c\u51fa\u3055\u308c\u305f\u6587\u5b57\u30b3\u30fc\u30c9\u304b\u3089\u6307\u5b9a\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u306b\u5909\u63db\n        if ($encoding !== $toEncoding) {\n            foreach ($row as &amp;$value) {\n                $value = mb_convert_encoding($value, $toEncoding, $encoding);\n            }\n        }\n        $data[] = $row;\n    }\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u9589\u3058\u308b\n    fclose($handle);\n    \n    return [\n        'data' =&gt; $data,\n        'detected_encoding' =&gt; $encoding,\n        'had_bom' =&gt; $hasBom\n    ];\n}\n\n\/\/ \u4f7f\u7528\u4f8b\ntry {\n    $result = readCsvWithEncoding('japanese_data.csv');\n    \n    echo '\u691c\u51fa\u3055\u308c\u305f\u6587\u5b57\u30b3\u30fc\u30c9: ' . $result['detected_encoding'] . '&lt;br&gt;';\n    echo 'BOM\u306e\u6709\u7121: ' . ($result['had_bom'] ? '\u3042\u308a' : '\u306a\u3057') . '&lt;br&gt;';\n    echo '\u30c7\u30fc\u30bf\u884c\u6570: ' . count($result['data']) . '&lt;br&gt;';\n    \n    \/\/ \u30c7\u30fc\u30bf\u306e\u8868\u793a\n    echo '&lt;table border=\"1\"&gt;';\n    foreach ($result['data'] as $row) {\n        echo '&lt;tr&gt;';\n        foreach ($row as $value) {\n            echo '&lt;td&gt;' . htmlspecialchars($value) . '&lt;\/td&gt;';\n        }\n        echo '&lt;\/tr&gt;';\n    }\n    echo '&lt;\/table&gt;';\n    \n} catch (Exception $e) {\n    echo '\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ' . $e-&gt;getMessage();\n}\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-29\">mb_convert_encoding\u3092\u4f7f\u3063\u305f\u78ba\u5b9f\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u3088\u308a\u78ba\u5b9f\u306b\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u3092\u884c\u3046\u306b\u306f\u3001PHP\u306e<code>mb_convert_encoding<\/code>\u95a2\u6570\u3092\u6d3b\u7528\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u3088\u308a\u5b9f\u8df5\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u793a\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<p><strong>StreamFilter\u3092\u4f7f\u3063\u305f\u9ad8\u5ea6\u306a\u5909\u63db:<\/strong><\/p>\n\n\n\n<p>PHP\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u30d5\u30a3\u30eb\u30bf\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u5927\u304d\u306a\u30d5\u30a1\u30a4\u30eb\u3067\u3082\u52b9\u7387\u7684\u306b\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u304c\u53ef\u80fd\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u30b9\u30c8\u30ea\u30fc\u30e0\u30d5\u30a3\u30eb\u30bf\u3092\u767b\u9332\nstream_filter_register('convert.encoding', 'EncodingConversionFilter');\n\nclass EncodingConversionFilter extends php_user_filter {\n    private $buffer = '';\n    private $fromEncoding;\n    private $toEncoding;\n    \n    public function onCreate() {\n        \/\/ \u30d5\u30a3\u30eb\u30bf\u30d1\u30e9\u30e1\u30fc\u30bf\u304b\u3089\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u60c5\u5831\u3092\u53d6\u5f97\n        $params = explode(':', $this-&gt;filtername);\n        if (count($params) &lt; 3) {\n            return false;\n        }\n        \n        $this-&gt;fromEncoding = $params[1];\n        $this-&gt;toEncoding = $params[2];\n        return true;\n    }\n    \n    public function filter($in, $out, &amp;$consumed, $closing) {\n        while ($bucket = stream_bucket_make_writeable($in)) {\n            \/\/ \u524d\u56de\u306e\u6b8b\u308a\u3068\u4eca\u56de\u306e\u30c7\u30fc\u30bf\u3092\u7d50\u5408\n            $data = $this-&gt;buffer . $bucket-&gt;data;\n            \n            \/\/ \u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\n            $convertedData = mb_convert_encoding($data, $this-&gt;toEncoding, $this-&gt;fromEncoding);\n            \n            \/\/ \u5909\u63db\u3057\u305f\u30c7\u30fc\u30bf\u3092\u51fa\u529b\u30d0\u30b1\u30c3\u30c8\u306b\n            $bucket-&gt;data = $convertedData;\n            $bucket-&gt;datalen = strlen($convertedData);\n            $consumed += $bucket-&gt;datalen;\n            \n            $this-&gt;buffer = '';\n            stream_bucket_append($out, $bucket);\n        }\n        \n        return PSFS_PASS_ON;\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b: SJIS \u2192 UTF-8\u5909\u63db\u3057\u306a\u304c\u3089CSV\u3092\u8aad\u307f\u8fbc\u3080\nfunction readCsvWithStreamFilter($filename, $fromEncoding = 'SJIS', $toEncoding = 'UTF-8') {\n    \/\/ \u30d5\u30a3\u30eb\u30bf\u540d\n    $filterName = \"convert.encoding.{$fromEncoding}:{$toEncoding}\";\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n    $handle = fopen($filename, 'r');\n    if (!$handle) {\n        throw new Exception('\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u307e\u305b\u3093\u3067\u3057\u305f');\n    }\n    \n    \/\/ \u30b9\u30c8\u30ea\u30fc\u30e0\u30d5\u30a3\u30eb\u30bf\u3092\u9069\u7528\n    stream_filter_append($handle, $filterName);\n    \n    \/\/ \u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\n    $data = [];\n    while (($row = fgetcsv($handle)) !== FALSE) {\n        $data[] = $row;\n    }\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u9589\u3058\u308b\n    fclose($handle);\n    \n    return $data;\n}\n\n\/\/ \u5b9f\u884c\u4f8b\ntry {\n    $data = readCsvWithStreamFilter('sjis_data.csv', 'SJIS', 'UTF-8');\n    \n    \/\/ \u30c7\u30fc\u30bf\u306e\u8868\u793a\n    echo '&lt;table border=\"1\"&gt;';\n    foreach ($data as $row) {\n        echo '&lt;tr&gt;';\n        foreach ($row as $value) {\n            echo '&lt;td&gt;' . htmlspecialchars($value) . '&lt;\/td&gt;';\n        }\n        echo '&lt;\/tr&gt;';\n    }\n    echo '&lt;\/table&gt;';\n    \n} catch (Exception $e) {\n    echo '\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3057\u305f: ' . $e-&gt;getMessage();\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>\u5b9f\u52d9\u3067\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u554f\u984c\u3078\u306e\u5bfe\u5fdc\u30dd\u30a4\u30f3\u30c8:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u4e8b\u524d\u78ba\u8a8d<\/strong> \u3082\u3057\u53ef\u80fd\u3067\u3042\u308c\u3070\u3001CSV\u30d5\u30a1\u30a4\u30eb\u306e\u51fa\u529b\u5143\u306b\u6587\u5b57\u30b3\u30fc\u30c9\u3092\u7d71\u4e00\u3057\u3066\u3082\u3089\u3046\u306e\u304c\u6700\u3082\u52b9\u7387\u7684\u3067\u3059\u3002UTF-8\u304c\u56fd\u969b\u6a19\u6e96\u3068\u3057\u3066\u63a8\u5968\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6587\u5b57\u30b3\u30fc\u30c9\u81ea\u52d5\u5224\u5b9a\u306e\u9650\u754c\u3092\u7406\u89e3\u3059\u308b<\/strong> <code>mb_detect_encoding()<\/code>\u306f\u5b8c\u74a7\u3067\u306f\u306a\u304f\u3001\u8aa4\u5224\u5b9a\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306b\u3001ASCII\u306e\u7bc4\u56f2\u5185\u306e\u6587\u5b57\u3060\u3051\u3092\u542b\u3080\u884c\u3067\u306f\u5224\u5b9a\u304c\u96e3\u3057\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u8907\u6570\u306e\u5224\u5b9a\u30ed\u30b8\u30c3\u30af\u3092\u7d44\u307f\u5408\u308f\u305b\u308b<\/strong> \u3088\u308a\u78ba\u5b9f\u306a\u5224\u5b9a\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u6709\u52b9\u3067\u3059\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function detectEncoding($string) {\n    \/\/ \u307e\u305aUTF-8\u306eBOM\u3092\u30c1\u30a7\u30c3\u30af\n    if (substr($string, 0, 3) === \"\\xEF\\xBB\\xBF\") {\n        return 'UTF-8-BOM';\n    }\n\n    \/\/ \u6b21\u306bUTF-8\u3068\u3057\u3066\u6709\u52b9\u304b\u30c1\u30a7\u30c3\u30af\n    if (preg_match('\/\/u', $string)) {\n        return 'UTF-8';\n    }\n\n    \/\/ SJIS\u7279\u6709\u306e\u30d0\u30a4\u30c8\u30d1\u30bf\u30fc\u30f3\u3092\u30c1\u30a7\u30c3\u30af\n    if (preg_match('\/[\\x81-\\x9F\\xE0-\\xFC][\\x40-\\x7E\\x80-\\xFC]\/', $string)) {\n        return 'SJIS';\n    }\n\n    \/\/ EUC-JP\u7279\u6709\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u30c1\u30a7\u30c3\u30af\n    if (preg_match('\/[\\xA1-\\xFE][\\xA1-\\xFE]\/', $string)) {\n        return 'EUC-JP';\n    }\n\n    \/\/ mb_detect_encoding\u306e\u30d2\u30e5\u30fc\u30ea\u30b9\u30c6\u30a3\u30c3\u30af\u3092\u4f7f\u7528\n    $encodings = ['UTF-8', 'SJIS', 'EUC-JP', 'ASCII'];\n    $detected = mb_detect_encoding($string, $encodings, true);\n\n    return $detected ?: 'SJIS'; \/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u306fSJIS\n}<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u306e\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/strong> \u5909\u63db\u4e0d\u53ef\u80fd\u306a\u6587\u5b57\u304c\u542b\u307e\u308c\u308b\u5834\u5408\u306b\u5099\u3048\u3066\u3001<code>\/\/TRANSLIT<\/code>\u3084<code>\/\/IGNORE<\/code>\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3057\u307e\u3059\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$convertedStr = iconv('SJIS', 'UTF-8\/\/IGNORE', $originalStr);<\/pre>\n\n\n\n<p>\u65e5\u672c\u8a9eCSV\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u554f\u984c\u306f\u3001\u9069\u5207\u306a\u5bfe\u51e6\u6cd5\u3092\u77e5\u3063\u3066\u3044\u308c\u3070\u89e3\u6c7a\u53ef\u80fd\u3067\u3059\u3002\u7279\u306b\u91cd\u8981\u306a\u306e\u306f\u3001\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u691c\u51fa\u3068\u5909\u63db\u306e\u30ed\u30b8\u30c3\u30af\u3092\u5805\u7262\u306b\u8a2d\u8a08\u3057\u3001\u30a8\u30e9\u30fc\u30b1\u30fc\u30b9\u306b\u5099\u3048\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u591a\u69d8\u306a\u74b0\u5883\u304b\u3089\u51fa\u529b\u3055\u308c\u305fCSV\u30d5\u30a1\u30a4\u30eb\u3082\u5b89\u5168\u306b\u51e6\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-30\">CSV\u30c7\u30fc\u30bf\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3068\u5b89\u5168\u306a\u51e6\u7406\u65b9\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-31\">\u5165\u529b\u5024\u30c1\u30a7\u30c3\u30af\u3068\u30b5\u30cb\u30bf\u30a4\u30ba\u306e\u91cd\u8981\u6027\u3068\u5b9f\u88c5\u4f8b<\/h3>\n\n\n\n<p>CSV\u30d5\u30a1\u30a4\u30eb\u306f\u5916\u90e8\u304b\u3089\u306e\u30c7\u30fc\u30bf\u5165\u529b\u624b\u6bb5\u3067\u3042\u308b\u305f\u3081\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u30ea\u30b9\u30af\u304c\u4f34\u3044\u307e\u3059\u3002\u7279\u306b\u3001\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3055\u308c\u305fCSV\u30d5\u30a1\u30a4\u30eb\u3084\u3001\u5916\u90e8\u30b7\u30b9\u30c6\u30e0\u304b\u3089\u53d7\u3051\u53d6\u3063\u305fCSV\u30d5\u30a1\u30a4\u30eb\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u306f\u3001\u30c7\u30fc\u30bf\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\uff08\u691c\u8a3c\uff09\u3068\u30b5\u30cb\u30bf\u30a4\u30ba\uff08\u7121\u5bb3\u5316\uff09\u304c\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3068\u30b5\u30cb\u30bf\u30a4\u30ba\u306e\u91cd\u8981\u6027:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u4e0d\u6b63\u30c7\u30fc\u30bf\u306e\u6392\u9664<\/strong>: \u5f62\u5f0f\u3084\u5024\u306e\u7bc4\u56f2\u304b\u3089\u5916\u308c\u305f\u30c7\u30fc\u30bf\u3092\u691c\u51fa\u3057\u3001\u51e6\u7406\u3092\u4e2d\u6b62\u307e\u305f\u306f\u4fee\u6b63<\/li>\n\n\n\n<li><strong>\u30b7\u30b9\u30c6\u30e0\u4fdd\u8b77<\/strong>: SQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u3084\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30b9\u30af\u30ea\u30d7\u30c6\u30a3\u30f3\u30b0\u306a\u3069\u306e\u653b\u6483\u3092\u9632\u6b62<\/li>\n\n\n\n<li><strong>\u30c7\u30fc\u30bf\u6574\u5408\u6027\u306e\u78ba\u4fdd<\/strong>: \u30d3\u30b8\u30cd\u30b9\u30eb\u30fc\u30eb\u306b\u5408\u81f4\u3057\u305f\u30c7\u30fc\u30bf\u306e\u307f\u3092\u51e6\u7406\u3059\u308b\u3053\u3068\u3067\u3001\u30b7\u30b9\u30c6\u30e0\u306e\u6574\u5408\u6027\u3092\u7dad\u6301<\/li>\n\n\n\n<li><strong>\u30a8\u30e9\u30fc\u691c\u51fa\u306e\u52b9\u7387\u5316<\/strong>: \u30c7\u30fc\u30bf\u6295\u5165\u524d\u306b\u554f\u984c\u3092\u691c\u51fa\u3059\u308b\u3053\u3068\u3067\u3001\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u5bb9\u6613\u306b<\/li>\n<\/ol>\n\n\n\n<p><strong>\u5b9f\u88c5\u4f8b: \u7dcf\u5408\u7684\u306aCSV\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30af\u30e9\u30b9<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\nclass CsvValidator {\n    \/\/ \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30eb\u30fc\u30eb\n    private $rules = [];\n    \n    \/\/ \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\n    private $errors = [];\n    \n    \/\/ \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30eb\u30fc\u30eb\u3092\u8ffd\u52a0\n    public function addRule($column, $ruleName, $params = null, $message = null) {\n        if (!isset($this-&gt;rules[$column])) {\n            $this-&gt;rules[$column] = [];\n        }\n        \n        $this-&gt;rules[$column][] = [\n            'rule' =&gt; $ruleName,\n            'params' =&gt; $params,\n            'message' =&gt; $message\n        ];\n        \n        return $this;\n    }\n    \n    \/\/ CSV\u30c7\u30fc\u30bf\u3092\u691c\u8a3c\n    public function validate($data) {\n        $this-&gt;errors = [];\n        $valid = true;\n        \n        foreach ($data as $rowIndex =&gt; $row) {\n            foreach ($this-&gt;rules as $column =&gt; $rules) {\n                \/\/ \u30ab\u30e9\u30e0\u304c\u5b58\u5728\u3059\u308b\u304b\u78ba\u8a8d\n                if (!array_key_exists($column, $row)) {\n                    $this-&gt;errors[$rowIndex][$column][] = \"\u30ab\u30e9\u30e0 '{$column}' \u304c\u5b58\u5728\u3057\u307e\u305b\u3093\";\n                    $valid = false;\n                    continue;\n                }\n                \n                $value = $row[$column];\n                \n                \/\/ \u5404\u30eb\u30fc\u30eb\u3092\u9069\u7528\n                foreach ($rules as $rule) {\n                    $result = $this-&gt;applyRule($rule['rule'], $value, $rule['params']);\n                    \n                    if (!$result) {\n                        $message = $rule['message'] ?? \"\u30ab\u30e9\u30e0 '{$column}' \u306e\u5024 '{$value}' \u304c {$rule['rule']} \u30eb\u30fc\u30eb\u306b\u9055\u53cd\u3057\u3066\u3044\u307e\u3059\";\n                        $this-&gt;errors[$rowIndex][$column][] = $message;\n                        $valid = false;\n                    }\n                }\n            }\n        }\n        \n        return $valid;\n    }\n    \n    \/\/ \u500b\u5225\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30eb\u30fc\u30eb\u3092\u9069\u7528\n    private function applyRule($rule, $value, $params) {\n        switch ($rule) {\n            case 'required':\n                return $value !== '' &amp;&amp; $value !== null;\n                \n            case 'numeric':\n                return is_numeric($value);\n                \n            case 'integer':\n                return filter_var($value, FILTER_VALIDATE_INT) !== false;\n                \n            case 'email':\n                return filter_var($value, FILTER_VALIDATE_EMAIL) !== false;\n                \n            case 'date':\n                $format = $params ?? 'Y-m-d';\n                $date = \\DateTime::createFromFormat($format, $value);\n                return $date &amp;&amp; $date-&gt;format($format) === $value;\n                \n            case 'min':\n                return is_numeric($value) &amp;&amp; $value &gt;= $params;\n                \n            case 'max':\n                return is_numeric($value) &amp;&amp; $value &lt;= $params;\n                \n            case 'in':\n                return in_array($value, (array)$params);\n                \n            case 'regex':\n                return preg_match($params, $value) === 1;\n                \n            case 'length':\n                if (is_array($params)) {\n                    $min = $params[0] ?? 0;\n                    $max = $params[1] ?? PHP_INT_MAX;\n                    $len = mb_strlen($value);\n                    return $len &gt;= $min &amp;&amp; $len &lt;= $max;\n                }\n                return mb_strlen($value) === $params;\n                \n            default:\n                return true;\n        }\n    }\n    \n    \/\/ \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d6\u5f97\n    public function getErrors() {\n        return $this-&gt;errors;\n    }\n    \n    \/\/ \u30c7\u30fc\u30bf\u3092\u30b5\u30cb\u30bf\u30a4\u30ba\n    public function sanitize(&amp;$data) {\n        foreach ($data as &amp;$row) {\n            foreach ($row as $column =&gt; &amp;$value) {\n                \/\/ HTML\u30bf\u30b0\u3092\u524a\u9664\n                $value = strip_tags($value);\n                \n                \/\/ \u524d\u5f8c\u306e\u7a7a\u767d\u3092\u524a\u9664\n                $value = trim($value);\n                \n                \/\/ NULL\u6587\u5b57\u3092\u524a\u9664\n                $value = str_replace(\"\\0\", '', $value);\n                \n                \/\/ \u7279\u6b8a\u6587\u5b57\u3092HTML\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306b\u5909\u63db\uff08\u8868\u793a\u6642\u306e\u5bfe\u7b56\uff09\n                \/\/ $value = htmlspecialchars($value, ENT_QUOTES, 'UTF-8');\n                \/\/ \u6ce8\uff1a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\u3059\u308b\u524d\u306f\u5909\u63db\u3057\u306a\u3044\u65b9\u304c\u826f\u3044\u5834\u5408\u3082\n            }\n        }\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nfunction validateCsvData($csvData) {\n    $validator = new CsvValidator();\n    \n    \/\/ \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30eb\u30fc\u30eb\u306e\u8a2d\u5b9a\n    $validator-&gt;addRule('id', 'required', null, 'ID\u306f\u5fc5\u9808\u3067\u3059')\n              -&gt;addRule('id', 'integer', null, 'ID\u306f\u6574\u6570\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059')\n              -&gt;addRule('name', 'required', null, '\u540d\u524d\u306f\u5fc5\u9808\u3067\u3059')\n              -&gt;addRule('name', 'length', [1, 50], '\u540d\u524d\u306f1\u301c50\u6587\u5b57\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059')\n              -&gt;addRule('email', 'required', null, '\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306f\u5fc5\u9808\u3067\u3059')\n              -&gt;addRule('email', 'email', null, '\u6709\u52b9\u306a\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u5f62\u5f0f\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059')\n              -&gt;addRule('age', 'integer', null, '\u5e74\u9f62\u306f\u6574\u6570\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059')\n              -&gt;addRule('age', 'min', 0, '\u5e74\u9f62\u306f0\u4ee5\u4e0a\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059')\n              -&gt;addRule('age', 'max', 120, '\u5e74\u9f62\u306f120\u4ee5\u4e0b\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059')\n              -&gt;addRule('status', 'in', ['active', 'inactive', 'pending'], '\u30b9\u30c6\u30fc\u30bf\u30b9\u306f active, inactive, pending \u306e\u3044\u305a\u308c\u304b\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059');\n    \n    \/\/ \u30c7\u30fc\u30bf\u3092\u30b5\u30cb\u30bf\u30a4\u30ba\n    $validator-&gt;sanitize($csvData);\n    \n    \/\/ \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u306e\u5b9f\u884c\n    $isValid = $validator-&gt;validate($csvData);\n    \n    return [\n        'valid' =&gt; $isValid,\n        'errors' =&gt; $validator-&gt;getErrors(),\n        'sanitized_data' =&gt; $csvData\n    ];\n}\n\n\/\/ CSV\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\u4f8b\n$csvData = [];\n$file = fopen('users.csv', 'r');\n$headers = fgetcsv($file);\n\nwhile (($row = fgetcsv($file)) !== FALSE) {\n    $csvData[] = array_combine($headers, $row);\n}\nfclose($file);\n\n\/\/ \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3068\u7d50\u679c\u8868\u793a\n$result = validateCsvData($csvData);\n\nif ($result['valid']) {\n    echo '\u30c7\u30fc\u30bf\u306f\u6709\u52b9\u3067\u3059\u3002';\n    \/\/ \u6b21\u306e\u51e6\u7406\uff08\u4f8b\uff1a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3078\u306e\u633f\u5165\u306a\u3069\uff09\n} else {\n    echo '\u4ee5\u4e0b\u306e\u30a8\u30e9\u30fc\u304c\u898b\u3064\u304b\u308a\u307e\u3057\u305f:&lt;br&gt;';\n    foreach ($result['errors'] as $rowIndex =&gt; $columns) {\n        echo \"\u884c \" . ($rowIndex + 2) . \":&lt;br&gt;\"; \/\/ \u30d8\u30c3\u30c0\u30fc\u884c(1)\u3068\u30bc\u30ed\u30d9\u30fc\u30b9+1\n        foreach ($columns as $column =&gt; $errors) {\n            foreach ($errors as $error) {\n                echo \" - {$column}: {$error}&lt;br&gt;\";\n            }\n        }\n    }\n}\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-32\">CSV\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u653b\u6483\u3092\u9632\u3050\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56<\/h3>\n\n\n\n<p>CSV\u30d5\u30a1\u30a4\u30eb\u306f\u4e00\u898b\u30b7\u30f3\u30d7\u30eb\u306a\u30c7\u30fc\u30bf\u5f62\u5f0f\u306b\u898b\u3048\u307e\u3059\u304c\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u91cd\u5927\u306a\u8106\u5f31\u6027\u3092\u6301\u3064\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306b\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u306a\u306e\u304c\u300cCSV\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u300d\u653b\u6483\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>CSV\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u3068\u306f\uff1f<\/strong><\/p>\n\n\n\n<p>CSV\u30d5\u30a1\u30a4\u30eb\u304cExcel\u306a\u3069\u306e\u8868\u8a08\u7b97\u30bd\u30d5\u30c8\u3067\u958b\u304b\u308c\u305f\u969b\u306b\u3001\u7279\u5b9a\u306e\u30c7\u30fc\u30bf\u3092\u6570\u5f0f\u3068\u3057\u3066\u5b9f\u884c\u3055\u305b\u308b\u653b\u6483\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001CSV\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3068\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">ID,Name,Description\n1,Product A,=HYPERLINK(\"https:\/\/malicious-site.com\",\"Click here\")\n<\/pre>\n\n\n\n<p>\u3053\u308c\u3092Excel\u3067\u958b\u304f\u3068\u3001\u300cClick here\u300d\u3068\u3044\u3046\u30ea\u30f3\u30af\u304c\u8868\u793a\u3055\u308c\u3001\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u30de\u30eb\u30a6\u30a7\u30a2\u30b5\u30a4\u30c8\u306a\u3069\u306b\u8a98\u5c0e\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u5371\u967a\u306a\u306e\u306f\u3001<code>=cmd|'\/c calc'!A1<\/code>\u306e\u3088\u3046\u306a\u6570\u5f0f\u3067\u3001Windows\u306e\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3092\u8d77\u52d5\u3055\u305b\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>CSV\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u5bfe\u7b56:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30c7\u30fc\u30bf\u306e\u691c\u8a3c<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function isFormulaInjection($value) {\n    \/\/ \u6570\u5f0f\u306e\u53ef\u80fd\u6027\u304c\u3042\u308b\u6587\u5b57\u5217\u30d1\u30bf\u30fc\u30f3\u3092\u30c1\u30a7\u30c3\u30af\n    $suspiciousPatterns = [\n        '\/^=\/',      \/\/ \u30a4\u30b3\u30fc\u30eb\u3067\u59cb\u307e\u308b\n        '\/^@\/',      \/\/ @\u3067\u59cb\u307e\u308b\n        '\/^-=\/',     \/\/ -=\u3067\u59cb\u307e\u308b\n        '\/^+=\/',     \/\/ +=\u3067\u59cb\u307e\u308b\n        '\/^\\t=\/',    \/\/ \u30bf\u30d6+\u30a4\u30b3\u30fc\u30eb\u3067\u59cb\u307e\u308b\n        '\/^\\+\/',     \/\/ \u30d7\u30e9\u30b9\u3067\u59cb\u307e\u308b\n        '\/^-\\+\/'     \/\/ \u30de\u30a4\u30ca\u30b9+\u30d7\u30e9\u30b9\u3067\u59cb\u307e\u308b\n    ];\n\n    foreach ($suspiciousPatterns as $pattern) {\n        if (preg_match($pattern, $value)) {\n            return true;\n        }\n    }\n\n    return false;\n}<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30d5\u30a9\u30fc\u30df\u30e5\u30e9\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u306e\u9632\u6b62<\/strong> <\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function preventFormulaInjection(&amp;$data) {\n    foreach ($data as &amp;$row) {\n        foreach ($row as &amp;$value) {\n            \/\/ \u6570\u5f0f\u306e\u53ef\u80fd\u6027\u304c\u3042\u308b\u30c7\u30fc\u30bf\u3092\u691c\u51fa\n            if (isFormulaInjection($value)) {\n                \/\/ \u5bfe\u7b561: \u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c8\u3092\u5148\u982d\u306b\u8ffd\u52a0\uff08Excel\u5bfe\u7b56\uff09\n                $value = \"'\" . $value;\n\n                \/\/ \u5bfe\u7b562: \u5225\u306e\u65b9\u6cd5\u3068\u3057\u3066\u3001\u6570\u5f0f\u3092\u30d7\u30ec\u30fc\u30f3\u30c6\u30ad\u30b9\u30c8\u3068\u3057\u3066\u6271\u3046\u3088\u3046\u5f37\u5236\n                \/\/ $value = \"\\t\" . $value; \/\/ \u30bf\u30d6\u3092\u524d\u306b\u8ffd\u52a0\n\n                \/\/ \u5bfe\u7b563: \u5371\u967a\u306a\u6587\u5b57\u3092\u7f6e\u63db\n                \/\/ $value = str_replace('=', '', $value);\n            }\n        }\n    }\n}<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u51fa\u529b\u6642\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function exportSafeCSV($data, $filename = 'export.csv') {\n    \/\/ \u30d8\u30c3\u30c0\u30fc\u3092\u8a2d\u5b9a\n    header('Content-Type: text\/csv');\n    header('Content-Disposition: attachment; filename=\"' . $filename . '\"');\n\n    \/\/ \u51fa\u529b\u30d0\u30c3\u30d5\u30a1\u3092\u958b\u59cb\n    ob_start();\n\n    \/\/ CSV\u3092\u51fa\u529b\n    $output = fopen('php:\/\/output', 'w');\n\n    \/\/ BOM\u3092\u8ffd\u52a0\uff08Excel\u5bfe\u5fdc\uff09\n    fputs($output, \"\\xEF\\xBB\\xBF\");\n\n    \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u66f8\u304d\u8fbc\u3080\uff08\u914d\u5217\u306e\u6700\u521d\u306e\u8981\u7d20\u304b\u3089\u30ad\u30fc\u3092\u53d6\u5f97\uff09\n    if (!empty($data)) {\n        fputcsv($output, array_keys($data[0]));\n    }\n\n    \/\/ \u30c7\u30fc\u30bf\u884c\u3092\u66f8\u304d\u8fbc\u3080\uff08\u30d5\u30a9\u30fc\u30df\u30e5\u30e9\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u5bfe\u7b56\u3092\u9069\u7528\uff09\n    foreach ($data as $row) {\n        foreach ($row as &amp;$value) {\n            \/\/ \u6570\u5f0f\u3068\u601d\u308f\u308c\u308b\u5185\u5bb9\u306e\u524d\u306b\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c8\u3092\u8ffd\u52a0\n            if (is_string($value) &amp;&amp; (\n                substr($value, 0, 1) === '=' ||\n                substr($value, 0, 1) === '+' ||\n                substr($value, 0, 1) === '-' ||\n                substr($value, 0, 1) === '@'\n            )) {\n                $value = \"'\" . $value;\n            }\n        }\n        fputcsv($output, $row);\n    }\n\n    \/\/ \u51fa\u529b\u3092\u7d42\u4e86\n    fclose($output);\n    ob_end_flush();\n    exit;\n}<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u9069\u5207\u306aContent-Type\u306e\u8a2d\u5b9a<\/strong> CSV\u30d5\u30a1\u30a4\u30eb\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u305b\u308b\u969b\u306f\u3001\u30d6\u30e9\u30a6\u30b6\u3067\u306e\u81ea\u52d5\u5b9f\u884c\u3092\u9632\u3050\u305f\u3081\u306b\u9069\u5207\u306aContent-Type\u3092\u8a2d\u5b9a\u3057\u307e\u3059\uff1a<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">header('Content-Type: text\/csv');\nheader('Content-Disposition: attachment; filename=\"safe_data.csv\"');<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u8b66\u544a<\/strong> CSV\u30d5\u30a1\u30a4\u30eb\u3092\u63d0\u4f9b\u3059\u308b\u969b\u306b\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u7406\u7531\u304b\u3089\u30c6\u30ad\u30b9\u30c8\u30a8\u30c7\u30a3\u30bf\u3067\u306e\u78ba\u8a8d\u3092\u63a8\u5968\u3059\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u3082\u6709\u52b9\u3067\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u30c7\u30fc\u30bf\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3068\u30b5\u30cb\u30bf\u30a4\u30ba\u306f\u3001CSV\u30c7\u30fc\u30bf\u51e6\u7406\u306e\u91cd\u8981\u306a\u4e00\u90e8\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3092\u4fdd\u3061\u306a\u304c\u3089\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u3092\u4f4e\u6e1b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u5916\u90e8\u304b\u3089\u306e\u30c7\u30fc\u30bf\u3092\u6271\u3046\u5834\u5408\u306f\u3001\u6f5c\u5728\u7684\u306a\u30ea\u30b9\u30af\u3092\u5e38\u306b\u610f\u8b58\u3057\u3001\u9069\u5207\u306a\u5bfe\u7b56\u3092\u8b1b\u3058\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-33\">CSV\u8aad\u307f\u8fbc\u307f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-34\">\u51e6\u7406\u901f\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u308bPHP\u306e\u8a2d\u5b9a\u5909\u66f4\u3068\u5b9f\u88c5\u65b9\u6cd5<\/h3>\n\n\n\n<p>CSV\u30d5\u30a1\u30a4\u30eb\u306e\u51e6\u7406\u3001\u7279\u306b\u5927\u5bb9\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u6271\u3046\u5834\u5408\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306f\u975e\u5e38\u306b\u91cd\u8981\u306a\u8981\u7d20\u3067\u3059\u3002PHP\u3067\u306eCSV\u51e6\u7406\u3092\u9ad8\u901f\u5316\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u8a2d\u5b9a\u306e\u6700\u9069\u5316\u304b\u3089\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u30c6\u30af\u30cb\u30c3\u30af\u307e\u3067\u3001\u69d8\u3005\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. PHP\u306e\u8a2d\u5b9a\u6700\u9069\u5316<\/strong><\/p>\n\n\n\n<p>\u307e\u305a\u3001<code>php.ini<\/code>\u306e\u8a2d\u5b9a\u3092\u898b\u76f4\u3059\u3053\u3068\u3067\u3001\u5927\u5e45\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u73fe\u5728\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d\necho \"\u30e1\u30e2\u30ea\u5236\u9650: \" . ini_get('memory_limit') . \"&lt;br&gt;\";\necho \"\u5b9f\u884c\u6642\u9593\u5236\u9650: \" . ini_get('max_execution_time') . \" \u79d2&lt;br&gt;\";\necho \"\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u30b5\u30a4\u30ba\u5236\u9650: \" . ini_get('upload_max_filesize') . \"&lt;br&gt;\";\necho \"POST\u30b5\u30a4\u30ba\u5236\u9650: \" . ini_get('post_max_size') . \"&lt;br&gt;\";\n\n\/\/ \u5b9f\u884c\u6642\u306b\u4e00\u6642\u7684\u306b\u8a2d\u5b9a\u3092\u5909\u66f4\uff08\u5927\u898f\u6a21CSV\u51e6\u7406\u7528\uff09\nini_set('memory_limit', '512M');          \/\/ \u30e1\u30e2\u30ea\u5236\u9650\u3092\u5897\u3084\u3059\nini_set('max_execution_time', 300);       \/\/ \u5b9f\u884c\u6642\u9593\u5236\u9650\u3092\u5ef6\u9577\uff08\u79d2\uff09\nset_time_limit(300);                      \/\/ \u5b9f\u884c\u6642\u9593\u5236\u9650\u306e\u5225\u306e\u8a2d\u5b9a\u65b9\u6cd5\n<\/pre>\n\n\n\n<p><strong>2. \u30d5\u30a1\u30a4\u30eb\u30aa\u30fc\u30d7\u30f3\u30e2\u30fc\u30c9\u306e\u6700\u9069\u5316<\/strong><\/p>\n\n\n\n<p>\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\u969b\u306e\u30e2\u30fc\u30c9\u3092\u6700\u9069\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u3089\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u6a19\u6e96\u7684\u306a\u65b9\u6cd5\n$handle = fopen('data.csv', 'r');\n\n\/\/ \u30d0\u30a4\u30ca\u30ea\u30e2\u30fc\u30c9\u3092\u8ffd\u52a0\uff08Windows\u74b0\u5883\u3067\u306e\u6539\u884c\u554f\u984c\u3092\u56de\u907f\uff09\n$handle = fopen('data.csv', 'rb');\n\n\/\/ \u8aad\u307f\u8fbc\u307f\u5c02\u7528\u3067\u30b7\u30fc\u30b1\u30f3\u30b7\u30e3\u30eb\u30a2\u30af\u30bb\u30b9\u3092\u6307\u5b9a\uff08\u30d2\u30f3\u30c8\u4ed8\u304d\uff09\n$handle = fopen('data.csv', 'r', false, stream_context_create([\n    'file' =&gt; ['flags' =&gt; FILE_BINARY],\n]));\n<\/pre>\n\n\n\n<p><strong>3. \u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0<\/strong><\/p>\n\n\n\n<p>\u5927\u304d\u306aCSV\u30d5\u30a1\u30a4\u30eb\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u5b9f\u88c5\u304c\u91cd\u8981\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\nfunction processLargeCsv($filename, $callback) {\n    \/\/ \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u51fa\u529b\u3059\u308b\u95a2\u6570\n    $showMemory = function($marker) {\n        echo $marker . ': ' . round(memory_get_usage() \/ 1024 \/ 1024, 2) . ' MB&lt;br&gt;';\n    };\n    \n    $showMemory('\u958b\u59cb\u6642');\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n    $handle = fopen($filename, 'rb');\n    \n    \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u8aad\u307f\u8fbc\u3080\n    $headers = fgetcsv($handle);\n    $headerCount = count($headers);\n    \n    $showMemory('\u30d8\u30c3\u30c0\u30fc\u8aad\u307f\u8fbc\u307f\u5f8c');\n    \n    \/\/ \u884c\u6570\u30ab\u30a6\u30f3\u30bf\u30fc\n    $rowCount = 0;\n    \n    \/\/ 1\u884c\u305a\u3064\u51e6\u7406\n    while (($row = fgetcsv($handle)) !== FALSE) {\n        \/\/ \u30ab\u30e9\u30e0\u6570\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d\n        if (count($row) !== $headerCount) {\n            continue; \/\/ \u4e0d\u6b63\u306a\u884c\u306f\u30b9\u30ad\u30c3\u30d7\n        }\n        \n        \/\/ \u30d8\u30c3\u30c0\u30fc\u3068\u5024\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u9023\u60f3\u914d\u5217\u306b\n        $data = array_combine($headers, $row);\n        \n        \/\/ \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3067\u51e6\u7406\n        $callback($data, $rowCount);\n        \n        \/\/ \u5909\u6570\u3092\u30af\u30ea\u30a2\uff08\u30e1\u30e2\u30ea\u89e3\u653e\uff09\n        unset($data, $row);\n        \n        \/\/ \u5b9a\u671f\u7684\u306b\u30ac\u30d9\u30fc\u30b8\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u5b9f\u884c\uff08\u30aa\u30d7\u30b7\u30e7\u30f3\uff09\n        if (++$rowCount % 10000 === 0) {\n            gc_collect_cycles();\n            $showMemory($rowCount . '\u884c\u51e6\u7406\u5f8c');\n        }\n    }\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u9589\u3058\u308b\n    fclose($handle);\n    \n    $showMemory('\u7d42\u4e86\u6642');\n    \n    return $rowCount;\n}\n\n\/\/ \u4f7f\u7528\u4f8b: \u5404\u884c\u3092\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u633f\u5165\n$totalRows = processLargeCsv('large_data.csv', function($row, $index) {\n    \/\/ \u4f8b\uff1a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u633f\u5165\n    \/\/ $db-&gt;insert('table', $row);\n    \n    \/\/ \u307e\u305f\u306f\u5358\u7d14\u306b\u5024\u3092\u8868\u793a\n    if ($index &lt; 5) { \/\/ \u6700\u521d\u306e5\u884c\u3060\u3051\u8868\u793a\n        echo \"\u884c {$index}: {$row['name']} ({$row['email']})&lt;br&gt;\";\n    }\n});\n\necho \"\u5408\u8a08 {$totalRows} \u884c\u3092\u51e6\u7406\u3057\u307e\u3057\u305f\";\n?&gt;\n<\/pre>\n\n\n\n<p><strong>4. \u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u6d3b\u7528\u3057\u305f\u9ad8\u901f\u5316<\/strong><\/p>\n\n\n\n<p>\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u30c6\u30fc\u30d6\u30eb\u3084\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u91cd\u8907\u8a08\u7b97\u3092\u907f\u3051\u3089\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\nfunction processCsvWithCache($filename) {\n    $handle = fopen($filename, 'rb');\n    $headers = fgetcsv($handle);\n    \n    \/\/ \u8a08\u7b97\u7d50\u679c\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\n    $calculationCache = [];\n    \n    \/\/ \u51e6\u7406\u4f8b\uff1a\u90f5\u4fbf\u756a\u53f7\u304b\u3089\u5730\u57df\u60c5\u5831\u3092\u53d6\u5f97\n    $zipCodeCache = [];\n    \n    while (($row = fgetcsv($handle)) !== FALSE) {\n        $data = array_combine($headers, $row);\n        \n        \/\/ \u90f5\u4fbf\u756a\u53f7\u304c\u542b\u307e\u308c\u308b\u5834\u5408\n        if (isset($data['zip_code'])) {\n            $zipCode = $data['zip_code'];\n            \n            \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u3042\u308b\u304b\u78ba\u8a8d\n            if (!isset($zipCodeCache[$zipCode])) {\n                \/\/ \u5b9f\u969b\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u691c\u7d22\u3084API\u30ea\u30af\u30a8\u30b9\u30c8\u306a\u3069\n                \/\/ $zipCodeCache[$zipCode] = lookupRegionByZipCode($zipCode);\n                $zipCodeCache[$zipCode] = \"Region for {$zipCode}\"; \/\/ \u30b5\u30f3\u30d7\u30eb\n            }\n            \n            \/\/ \u30ad\u30e3\u30c3\u30b7\u30e5\u304b\u3089\u53d6\u5f97\n            $data['region'] = $zipCodeCache[$zipCode];\n        }\n        \n        \/\/ \u4ee5\u964d\u306e\u51e6\u7406...\n    }\n    \n    fclose($handle);\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>5. \u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\/\u975e\u540c\u671f\u51e6\u7406\u306b\u3088\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a<\/strong><\/p>\n\n\n\n<p>PHP\u3067\u306f\u30cd\u30a4\u30c6\u30a3\u30d6\u306e\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c7\u30a3\u30f3\u30b0\u306f\u9650\u3089\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u4e26\u5217\u51e6\u7406\u3092\u7591\u4f3c\u7684\u306b\u5b9f\u73fe\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ CSV\u3092\u5206\u5272\u3057\u3066\u30d0\u30c3\u30c1\u51e6\u7406\u3059\u308b\u30b5\u30f3\u30d7\u30eb\nfunction processCsvInBatches($filename, $batchSize = 1000, $workerCount = 4) {\n    \/\/ \u4e00\u6642\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\n    $tempDir = sys_get_temp_dir() . '\/csv_batches';\n    if (!is_dir($tempDir)) {\n        mkdir($tempDir, 0777, true);\n    }\n    \n    \/\/ \u5143\u306eCSV\u3092\u958b\u304f\n    $handle = fopen($filename, 'rb');\n    $headers = fgetcsv($handle);\n    \n    \/\/ \u30d0\u30c3\u30c1\u30d5\u30a1\u30a4\u30eb\u3092\u6e96\u5099\n    $batchFiles = [];\n    $batchHandles = [];\n    \n    for ($i = 0; $i &lt; $workerCount; $i++) {\n        $batchFiles[$i] = \"{$tempDir}\/batch_{$i}.csv\";\n        $batchHandles[$i] = fopen($batchFiles[$i], 'wb');\n        \n        \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u66f8\u304d\u8fbc\u3080\n        fputcsv($batchHandles[$i], $headers);\n    }\n    \n    \/\/ \u30c7\u30fc\u30bf\u3092\u5206\u6563\n    $rowCount = 0;\n    while (($row = fgetcsv($handle)) !== FALSE) {\n        \/\/ \u30d0\u30c3\u30c1\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u8a08\u7b97\uff08\u30e9\u30a6\u30f3\u30c9\u30ed\u30d3\u30f3\u65b9\u5f0f\uff09\n        $batchIndex = $rowCount % $workerCount;\n        \n        \/\/ \u30d0\u30c3\u30c1\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u307f\n        fputcsv($batchHandles[$batchIndex], $row);\n        \n        $rowCount++;\n    }\n    \n    \/\/ \u3059\u3079\u3066\u306e\u30d5\u30a1\u30a4\u30eb\u30cf\u30f3\u30c9\u30eb\u3092\u9589\u3058\u308b\n    fclose($handle);\n    foreach ($batchHandles as $batchHandle) {\n        fclose($batchHandle);\n    }\n    \n    \/\/ \u3053\u3053\u3067\u5404\u30d0\u30c3\u30c1\u30d5\u30a1\u30a4\u30eb\u3092\u4e26\u5217\u51e6\u7406\n    \/\/ \u5b9f\u969b\u306e\u4e26\u5217\u51e6\u7406\u306f\u30b5\u30fc\u30d0\u30fc\u74b0\u5883\u306b\u3088\u3063\u3066\u7570\u306a\u308b\n    \/\/ - Linux: pcntl_fork()\u3092\u4f7f\u7528\n    \/\/ - Windows\u3092\u542b\u3080\u4e00\u822c\u74b0\u5883: \u30b7\u30a7\u30eb\u30b3\u30de\u30f3\u30c9\u3067\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u5b9f\u884c\n    \/\/ - \u30ef\u30fc\u30ab\u30fc\u30ad\u30e5\u30fc\u30b7\u30b9\u30c6\u30e0\uff08Gearman\u3001RabbitMQ\u306a\u3069\uff09\n    \n    \/\/ \u30b7\u30f3\u30d7\u30eb\u306a\u4f8b\uff08\u5b9f\u969b\u306f\u74b0\u5883\u306b\u5fdc\u3058\u3066\u5b9f\u88c5\uff09\n    foreach ($batchFiles as $i =&gt; $batchFile) {\n        \/\/ \u4f8b\uff1a\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u3067PHP\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u5b9f\u884c\n        $cmd = \"php process_batch.php \\\"{$batchFile}\\\" &gt; \/dev\/null 2&gt;&amp;1 &amp;\";\n        \/\/ \u5b9f\u969b\u306f\u74b0\u5883\u306b\u5fdc\u3058\u3066\u9069\u5207\u306b\u5b9f\u88c5\n        \/\/ exec($cmd);\n        \n        echo \"\u30d0\u30c3\u30c1 {$i} \u306e\u51e6\u7406\u3092\u958b\u59cb\u3057\u307e\u3057\u305f&lt;br&gt;\";\n    }\n    \n    return $rowCount;\n}\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-35\">\u8aad\u307f\u8fbc\u307f\u51e6\u7406\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u6bd4\u8f03\u3068\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u5206\u6790<\/h3>\n\n\n\n<p>CSV\u306e\u8aad\u307f\u8fbc\u307f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u306f\u3001\u307e\u305a\u73fe\u72b6\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6e2c\u5b9a\u3057\u3001\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u7279\u5b9a\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u4ee5\u4e0b\u306f\u3001\u7570\u306a\u308bCSV\u8aad\u307f\u8fbc\u307f\u65b9\u6cd5\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u6bd4\u8f03\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u30d9\u30f3\u30c1\u30de\u30fc\u30af\u7528\u95a2\u6570\nfunction benchmark($name, $callback) {\n    $startTime = microtime(true);\n    $startMemory = memory_get_usage();\n    \n    $result = $callback();\n    \n    $endTime = microtime(true);\n    $endMemory = memory_get_usage();\n    \n    $timeUsed = round(($endTime - $startTime) * 1000, 2); \/\/ \u30df\u30ea\u79d2\n    $memoryUsed = round(($endMemory - $startMemory) \/ 1024 \/ 1024, 2); \/\/ MB\n    \n    echo \"&lt;tr&gt;\";\n    echo \"&lt;td&gt;{$name}&lt;\/td&gt;\";\n    echo \"&lt;td&gt;{$timeUsed} ms&lt;\/td&gt;\";\n    echo \"&lt;td&gt;{$memoryUsed} MB&lt;\/td&gt;\";\n    echo \"&lt;\/tr&gt;\";\n    \n    return $result;\n}\n\n\/\/ \u5404\u624b\u6cd5\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u6bd4\u8f03\nfunction runCsvBenchmarks($filename) {\n    echo \"&lt;table border='1'&gt;\";\n    echo \"&lt;tr&gt;&lt;th&gt;\u65b9\u6cd5&lt;\/th&gt;&lt;th&gt;\u5b9f\u884c\u6642\u9593&lt;\/th&gt;&lt;th&gt;\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf&lt;\/th&gt;&lt;\/tr&gt;\";\n    \n    \/\/ \u65b9\u6cd51: fgetcsv() \u306b\u3088\u308b\u8aad\u307f\u8fbc\u307f\n    benchmark('fgetcsv()', function() use ($filename) {\n        $rows = 0;\n        $handle = fopen($filename, 'rb');\n        $headers = fgetcsv($handle);\n        \n        while (($row = fgetcsv($handle)) !== FALSE) {\n            $data = array_combine($headers, $row);\n            $rows++;\n        }\n        \n        fclose($handle);\n        return $rows;\n    });\n    \n    \/\/ \u65b9\u6cd52: file() + str_getcsv() \u306b\u3088\u308b\u8aad\u307f\u8fbc\u307f\n    benchmark('file() + str_getcsv()', function() use ($filename) {\n        $lines = file($filename);\n        $headers = str_getcsv(array_shift($lines));\n        \n        $data = array_map(function($line) use ($headers) {\n            return array_combine($headers, str_getcsv($line));\n        }, $lines);\n        \n        return count($data);\n    });\n    \n    \/\/ \u65b9\u6cd53: SplFileObject \u306b\u3088\u308b\u8aad\u307f\u8fbc\u307f\n    benchmark('SplFileObject', function() use ($filename) {\n        $file = new SplFileObject($filename);\n        $file-&gt;setFlags(SplFileObject::READ_CSV);\n        $rows = 0;\n        \n        foreach ($file as $i =&gt; $row) {\n            if ($i === 0) {\n                $headers = $row;\n                continue;\n            }\n            \n            if ($row[0] !== null) {\n                $data = array_combine($headers, $row);\n                $rows++;\n            }\n        }\n        \n        return $rows;\n    });\n    \n    \/\/ \u65b9\u6cd54: League\\Csv \u306b\u3088\u308b\u8aad\u307f\u8fbc\u307f\uff08\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u3042\u308b\u5834\u5408\uff09\n    if (class_exists('League\\Csv\\Reader')) {\n        benchmark('League\\\\Csv', function() use ($filename) {\n            $csv = \\League\\Csv\\Reader::createFromPath($filename, 'rb');\n            $csv-&gt;setHeaderOffset(0);\n            \n            $records = $csv-&gt;getRecords();\n            $rows = iterator_count($records);\n            \n            return $rows;\n        });\n    }\n    \n    echo \"&lt;\/table&gt;\";\n}\n\n\/\/ \u30d9\u30f3\u30c1\u30de\u30fc\u30af\u5b9f\u884c\nrunCsvBenchmarks('sample.csv');\n?&gt;\n<\/pre>\n\n\n\n<p><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u305f\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>I\/O\u64cd\u4f5c\u306e\u6700\u5c0f\u5316<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5c0f\u3055\u306a\u30c1\u30e3\u30f3\u30af\u3067\u4f55\u5ea6\u3082\u8aad\u307f\u66f8\u304d\u3059\u308b\u3088\u308a\u3082\u3001\u4e00\u5ea6\u306b\u5927\u304d\u306a\u30d6\u30ed\u30c3\u30af\u3092\u51e6\u7406<\/li>\n\n\n\n<li>\u30d5\u30a1\u30a4\u30eb\u30aa\u30fc\u30d7\u30f3\/\u30af\u30ed\u30fc\u30ba\u306e\u56de\u6570\u3092\u6700\u5c0f\u5316<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30e1\u30e2\u30ea\u7ba1\u7406\u306e\u6700\u9069\u5316<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u4e0d\u8981\u306b\u306a\u3063\u305f\u5909\u6570\u306f <code>unset()<\/code> \u3067\u30e1\u30e2\u30ea\u3092\u89e3\u653e<\/li>\n\n\n\n<li>\u5927\u304d\u306a\u914d\u5217\u306f\u53c2\u7167\u6e21\u3057\uff08<code>&amp;$variable<\/code>\uff09\u3067\u51e6\u7406<\/li>\n\n\n\n<li><code>gc_collect_cycles()<\/code> \u3092\u9069\u5207\u306a\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u547c\u3073\u51fa\u3059<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u9069\u5207\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u9078\u629e<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u306e\u5834\u5408\u3001\u914d\u5217\u3088\u308a\u3082\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u6d3b\u7528<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u52b9\u304f\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u9078\u629e<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30b3\u30fc\u30c9\u6700\u9069\u5316<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30eb\u30fc\u30d7\u5185\u3067\u306e\u95a2\u6570\u547c\u3073\u51fa\u3057\u3092\u6700\u5c0f\u5316<\/li>\n\n\n\n<li>\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u5024\u3092\u5909\u6570\u306b\u30ad\u30e3\u30c3\u30b7\u30e5<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5b9f\u884c\u74b0\u5883\u306e\u6700\u9069\u5316<\/strong>\n<ul class=\"wp-block-list\">\n<li>opcache \u306e\u6709\u52b9\u5316\u3068\u8a2d\u5b9a\u6700\u9069\u5316<\/li>\n\n\n\n<li>PHP \u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u6700\u65b0\u5316\uff08PHP 7.x\/8.x \u306f\u65e7\u30d0\u30fc\u30b8\u30e7\u30f3\u3088\u308a\u9ad8\u901f\uff09<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>CSV\u51e6\u7406\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306e\u6700\u9069\u306a\u65b9\u6cd5\u306f\u3001\u6271\u3046\u30c7\u30fc\u30bf\u306e\u30b5\u30a4\u30ba\u3084\u5177\u4f53\u7684\u306a\u8981\u4ef6\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u5c0f\u898f\u6a21\u306aCSV\u30d5\u30a1\u30a4\u30eb\u3067\u3042\u308c\u3070\u3001<code>file()<\/code> \u3068 <code>str_getcsv()<\/code> \u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u624b\u8efd\u3067\u901f\u3044\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u4e00\u65b9\u3001\u5927\u898f\u6a21\u306a\u30d5\u30a1\u30a4\u30eb\u306e\u5834\u5408\u306f\u3001\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u3084\u30d0\u30c3\u30c1\u51e6\u7406\u304c\u52b9\u679c\u7684\u3067\u3059\u3002\u3044\u305a\u308c\u306e\u5834\u5408\u3082\u3001\u6700\u9069\u306a\u65b9\u6cd5\u3092\u9078\u3076\u305f\u3081\u306b\u3001\u5b9f\u969b\u306e\u30c7\u30fc\u30bf\u3067\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3092\u884c\u3046\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-36\">\u3088\u304f\u3042\u308b\u30a8\u30e9\u30fc\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-37\">\u300cfopen failed to open stream\u300d\u30a8\u30e9\u30fc\u306e\u5bfe\u51e6\u6cd5<\/h3>\n\n\n\n<p>PHP\u3067CSV\u30d5\u30a1\u30a4\u30eb\u3092\u6271\u3046\u969b\u306b\u6700\u3082\u3088\u304f\u906d\u9047\u3059\u308b\u30a8\u30e9\u30fc\u306e\u4e00\u3064\u304c\u300cfopen failed to open stream\u300d\u3067\u3059\u3002\u3053\u306e\u30a8\u30e9\u30fc\u306b\u306f\u69d8\u3005\u306a\u539f\u56e0\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u304c\u3001\u4e3b\u306a\u3082\u306e\u3068\u5bfe\u51e6\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u4f8b:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">Warning: fopen(data.csv): failed to open stream: No such file or directory in \/var\/www\/html\/example.php on line 5\n<\/pre>\n\n\n\n<p><strong>\u4e3b\u306a\u539f\u56e0\u3068\u89e3\u6c7a\u7b56:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u306e\u554f\u984c<\/strong> \u76f8\u5bfe\u30d1\u30b9\u3068\u7d76\u5bfe\u30d1\u30b9\u306e\u6df7\u540c\u306b\u3088\u308b\u30a8\u30e9\u30fc\u304c\u6700\u3082\u591a\u3044\u30b1\u30fc\u30b9\u3067\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u554f\u984c\u306e\u3042\u308b\u30b3\u30fc\u30c9\n$handle = fopen('data.csv', 'r');\n\n\/\/ \u89e3\u6c7a\u7b561: \u7d76\u5bfe\u30d1\u30b9\u3092\u4f7f\u7528\n$handle = fopen('\/var\/www\/html\/data.csv', 'r');\n\n\/\/ \u89e3\u6c7a\u7b562: \u76f8\u5bfe\u30d1\u30b9\u306e\u57fa\u6e96\u3092\u660e\u78ba\u306b\u3059\u308b\n$handle = fopen(__DIR__ . '\/data.csv', 'r');<\/pre>\n\n\n\n<p>\u7279\u306b\u3001\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u306e\u5b9f\u884c\u74b0\u5883\u3067\u306f\u3001\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u5b9f\u884c\u3055\u308c\u308b\u30ab\u30ec\u30f3\u30c8\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u304c\u4e88\u60f3\u3068\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<code>__DIR__<\/code>\u3084<code>__FILE__<\/code>\u3092\u4f7f\u3063\u3066\u660e\u793a\u7684\u306b\u30d1\u30b9\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30d5\u30a1\u30a4\u30eb\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u306e\u554f\u984c<\/strong> \u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3057\u3066\u3044\u3066\u3082\u3001\u8aad\u307f\u53d6\u308a\u6a29\u9650\u304c\u306a\u3044\u5834\u5408\u306b\u3053\u306e\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3059\u3002 <\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3092\u78ba\u8a8d\necho \"\u30d5\u30a1\u30a4\u30eb\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3: \" . substr(sprintf('%o', fileperms('data.csv')), -4) . \"&lt;br&gt;\";\n\n\/\/ \u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u53d6\u308a\u6a29\u9650\u3092\u78ba\u8a8d\nif (!is_readable('data.csv')) {\n    echo \"\u30d5\u30a1\u30a4\u30eb\u306b\u8aad\u307f\u53d6\u308a\u6a29\u9650\u304c\u3042\u308a\u307e\u305b\u3093\u3002&lt;br&gt;\";\n}<\/pre>\n\n\n\n<p>\u89e3\u6c7a\u7b56\u3068\u3057\u3066\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u6240\u6709\u8005\u3084\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3092\u9069\u5207\u306b\u8a2d\u5b9a\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># \u30d5\u30a1\u30a4\u30eb\u306e\u6240\u6709\u8005\u3092\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u5909\u66f4\nchown www-data:www-data data.csv\n\n# \u8aad\u307f\u53d6\u308a\u6a29\u9650\u3092\u8ffd\u52a0\nchmod 644 data.csv<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30d5\u30a1\u30a4\u30eb\u30ed\u30c3\u30af\u306e\u554f\u984c<\/strong> \u4ed6\u306e\u30d7\u30ed\u30bb\u30b9\u304c\u30d5\u30a1\u30a4\u30eb\u3092\u30ed\u30c3\u30af\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u3082\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30d5\u30a1\u30a4\u30eb\u304c\u6392\u4ed6\u7684\u306b\u30ed\u30c3\u30af\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u78ba\u8a8d\n$handle = @fopen('data.csv', 'r');\nif (!$handle) {\n    \/\/ flock()\u3067\u30c6\u30b9\u30c8\n    $test_handle = fopen('data.csv', 'r+');\n    if ($test_handle) {\n        if (!flock($test_handle, LOCK_EX | LOCK_NB)) {\n            echo \"\u30d5\u30a1\u30a4\u30eb\u304c\u30ed\u30c3\u30af\u3055\u308c\u3066\u3044\u307e\u3059\u3002&lt;br&gt;\";\n        }\n        fclose($test_handle);\n    }\n}<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30c7\u30a3\u30b9\u30af\u5bb9\u91cf\u306e\u554f\u984c<\/strong> \u66f8\u304d\u8fbc\u307f\u30e2\u30fc\u30c9\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\u5834\u5408\u3001\u30c7\u30a3\u30b9\u30af\u5bb9\u91cf\u4e0d\u8db3\u3067\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30c7\u30a3\u30b9\u30af\u5bb9\u91cf\u3092\u78ba\u8a8d\n$free_space = disk_free_space('\/');\necho \"\u7a7a\u304d\u30c7\u30a3\u30b9\u30af\u5bb9\u91cf: \" . round($free_space \/ 1024 \/ 1024) . \" MB&lt;br&gt;\";<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30bb\u30fc\u30d5\u30e2\u30fc\u30c9\u306e\u5236\u9650<\/strong> PHP\u306e\u30bb\u30fc\u30d5\u30e2\u30fc\u30c9\u304c\u6709\u52b9\u306a\u5834\u5408\u3001\u7279\u5b9a\u306e\u30d1\u30b9\u3078\u306e\u30a2\u30af\u30bb\u30b9\u304c\u5236\u9650\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30bb\u30fc\u30d5\u30e2\u30fc\u30c9\u306e\u78ba\u8a8d\necho \"\u30bb\u30fc\u30d5\u30e2\u30fc\u30c9: \" . (ini_get('safe_mode') ? 'On' : 'Off') . \"&lt;br&gt;\";<\/pre>\n\n\n\n<p><strong>\u7dcf\u5408\u7684\u306a\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u95a2\u6570:<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function troubleshootFileOpen($filename, $mode = 'r') {\n    echo \"&lt;h3&gt;\u30d5\u30a1\u30a4\u30eb\u30aa\u30fc\u30d7\u30f3\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0&lt;\/h3&gt;\";\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u306e\u60c5\u5831\n    echo \"\u5bfe\u8c61\u30d5\u30a1\u30a4\u30eb: \" . $filename . \"&lt;br&gt;\";\n    echo \"\u7d76\u5bfe\u30d1\u30b9\u5909\u63db: \" . realpath($filename) . \"&lt;br&gt;\";\n    echo \"\u30ab\u30ec\u30f3\u30c8\u30c7\u30a3\u30ec\u30af\u30c8\u30ea: \" . getcwd() . \"&lt;br&gt;\";\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u306e\u5b58\u5728\u78ba\u8a8d\n    if (!file_exists($filename)) {\n        echo \"&lt;b&gt;\u30a8\u30e9\u30fc:&lt;\/b&gt; \u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3057\u307e\u305b\u3093\u3002&lt;br&gt;\";\n        \n        \/\/ \u89aa\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u5b58\u5728\u78ba\u8a8d\n        $dir = dirname($filename);\n        if (!is_dir($dir)) {\n            echo \"- \u30c7\u30a3\u30ec\u30af\u30c8\u30ea '{$dir}' \u304c\u5b58\u5728\u3057\u307e\u305b\u3093\u3002&lt;br&gt;\";\n        } else {\n            echo \"- \u30c7\u30a3\u30ec\u30af\u30c8\u30ea '{$dir}' \u306f\u5b58\u5728\u3057\u307e\u3059\u3002&lt;br&gt;\";\n            echo \"- \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306e\u30d5\u30a1\u30a4\u30eb\u4e00\u89a7:&lt;br&gt;\";\n            \n            $files = scandir($dir);\n            echo \"&lt;pre&gt;\";\n            print_r($files);\n            echo \"&lt;\/pre&gt;\";\n        }\n        return false;\n    }\n    \n    \/\/ \u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u78ba\u8a8d\n    $perms = substr(sprintf('%o', fileperms($filename)), -4);\n    echo \"\u30d5\u30a1\u30a4\u30eb\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3: \" . $perms . \"&lt;br&gt;\";\n    \n    \/\/ \u8aad\u307f\u53d6\u308a\/\u66f8\u304d\u8fbc\u307f\u6a29\u9650\u306e\u78ba\u8a8d\n    echo \"\u8aad\u307f\u53d6\u308a\u53ef\u80fd: \" . (is_readable($filename) ? '\u306f\u3044' : '\u3044\u3044\u3048') . \"&lt;br&gt;\";\n    echo \"\u66f8\u304d\u8fbc\u307f\u53ef\u80fd: \" . (is_writable($filename) ? '\u306f\u3044' : '\u3044\u3044\u3048') . \"&lt;br&gt;\";\n    \n    \/\/ \u30e2\u30fc\u30c9\u306b\u5fdc\u3058\u305f\u6a29\u9650\u30c1\u30a7\u30c3\u30af\n    if (strpos($mode, 'r') !== false &amp;&amp; !is_readable($filename)) {\n        echo \"&lt;b&gt;\u30a8\u30e9\u30fc:&lt;\/b&gt; \u30d5\u30a1\u30a4\u30eb\u306b\u8aad\u307f\u53d6\u308a\u6a29\u9650\u304c\u3042\u308a\u307e\u305b\u3093\u3002&lt;br&gt;\";\n        return false;\n    }\n    \n    if ((strpos($mode, 'w') !== false || strpos($mode, 'a') !== false) &amp;&amp; !is_writable($filename)) {\n        echo \"&lt;b&gt;\u30a8\u30e9\u30fc:&lt;\/b&gt; \u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u307f\u6a29\u9650\u304c\u3042\u308a\u307e\u305b\u3093\u3002&lt;br&gt;\";\n        return false;\n    }\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\n    $size = filesize($filename);\n    echo \"\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba: \" . $size . \" \u30d0\u30a4\u30c8&lt;br&gt;\";\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u30bf\u30a4\u30d7\n    $finfo = finfo_open(FILEINFO_MIME_TYPE);\n    $mime = finfo_file($finfo, $filename);\n    echo \"MIME\u30bf\u30a4\u30d7: \" . $mime . \"&lt;br&gt;\";\n    \n    \/\/ \u7a7a\u304d\u30c7\u30a3\u30b9\u30af\u5bb9\u91cf\n    $free_space = disk_free_space(dirname($filename));\n    echo \"\u7a7a\u304d\u30c7\u30a3\u30b9\u30af\u5bb9\u91cf: \" . round($free_space \/ 1024 \/ 1024) . \" MB&lt;br&gt;\";\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u30aa\u30fc\u30d7\u30f3\u30c6\u30b9\u30c8\n    $handle = @fopen($filename, $mode);\n    if ($handle) {\n        echo \"&lt;span style='color:green'&gt;\u30d5\u30a1\u30a4\u30eb\u3092\u6b63\u5e38\u306b\u958b\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002&lt;\/span&gt;&lt;br&gt;\";\n        fclose($handle);\n        return true;\n    } else {\n        echo \"&lt;b&gt;\u30a8\u30e9\u30fc:&lt;\/b&gt; \u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u307e\u305b\u3093\u3067\u3057\u305f\u3002&lt;br&gt;\";\n        \n        \/\/ PHP\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u53d6\u5f97\n        $error = error_get_last();\n        if ($error) {\n            echo \"PHP\u30a8\u30e9\u30fc: \" . $error['message'] . \"&lt;br&gt;\";\n        }\n        \n        return false;\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\ntroubleshootFileOpen('data.csv');\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-38\">\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3068\u6587\u5b57\u30b3\u30fc\u30c9\u306b\u95a2\u9023\u3059\u308b\u554f\u984c\u89e3\u6c7a\u30ac\u30a4\u30c9<\/h3>\n\n\n\n<p>CSV\u30d5\u30a1\u30a4\u30eb\u51e6\u7406\u3067\u983b\u7e41\u306b\u767a\u751f\u3059\u308b\u554f\u984c\u3068\u3057\u3066\u3001\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3068\u6587\u5b57\u30b3\u30fc\u30c9\u306e\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u554f\u984c\u3092\u52b9\u7387\u7684\u306b\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306e\u30ac\u30a4\u30c9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u95a2\u9023\u306e\u554f\u984c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u6a29\u9650\u306e\u78ba\u8a8d<\/strong> CSV\u30d5\u30a1\u30a4\u30eb\u3092\u751f\u6210\u3059\u308b\u5834\u5408\u3001\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u3082\u66f8\u304d\u8fbc\u307f\u6a29\u9650\u304c\u5fc5\u8981\u3067\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u4fdd\u5b58\u5148\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u6a29\u9650\u78ba\u8a8d\n$dir = 'csv_exports';\nif (!is_dir($dir)) {\n    \/\/ \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306f\u4f5c\u6210\u3092\u8a66\u307f\u308b\n    if (!mkdir($dir, 0755, true)) {\n        die(\"\u30c7\u30a3\u30ec\u30af\u30c8\u30ea '{$dir}' \u3092\u4f5c\u6210\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\");\n    }\n}\n\n\/\/ \u66f8\u304d\u8fbc\u307f\u6a29\u9650\u306e\u78ba\u8a8d\nif (!is_writable($dir)) {\n    die(\"\u30c7\u30a3\u30ec\u30af\u30c8\u30ea '{$dir}' \u306b\u66f8\u304d\u8fbc\u307f\u6a29\u9650\u304c\u3042\u308a\u307e\u305b\u3093\");\n}<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u306e\u6d3b\u7528<\/strong> \u6a29\u9650\u306e\u554f\u984c\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u3001\u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u3092\u4f7f\u3046\u65b9\u6cd5\u3082\u6709\u52b9\u3067\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u3092\u4f7f\u7528\n$temp_file = tempnam(sys_get_temp_dir(), 'csv_');\n\n\/\/ CSV\u30c7\u30fc\u30bf\u3092\u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u3080\n$handle = fopen($temp_file, 'w');\n\/\/ ... CSV\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3080 ...\nfclose($handle);\n\n\/\/ \u6700\u7d42\u7684\u306a\u5834\u6240\u306b\u30b3\u30d4\u30fc\n$destination = 'exports\/data.csv';\nif (!copy($temp_file, $destination)) {\n    die(\"\u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30d4\u30fc\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\");\n}\n\n\/\/ \u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u3092\u524a\u9664\nunlink($temp_file);<\/pre>\n\n\n\n<p><strong>\u6587\u5b57\u30b3\u30fc\u30c9\u95a2\u9023\u306e\u554f\u984c:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>BOM\u306e\u691c\u51fa\u3068\u524a\u9664<\/strong> UTF-8\u306eBOM\uff08Byte Order Mark\uff09\u304cCSV\u30d5\u30a1\u30a4\u30eb\u306e\u5148\u982d\u306b\u5b58\u5728\u3059\u308b\u3068\u3001\u4e88\u671f\u3057\u306a\u3044\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ BOM\u306e\u691c\u51fa\u3068\u524a\u9664\nfunction removeBOM($content) {\n    if (substr($content, 0, 3) === \"\\xEF\\xBB\\xBF\") {\n        return substr($content, 3);\n    }\n    return $content;\n}\n\n\/\/ \u30d5\u30a1\u30a4\u30eb\u5168\u4f53\u3092\u8aad\u307f\u8fbc\u3093\u3067BOM\u3092\u524a\u9664\n$content = file_get_contents('data.csv');\n$content = removeBOM($content); file_put_contents('data_without_bom.csv', $content);<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6587\u5b57\u30b3\u30fc\u30c9\u5224\u5b9a\u3068\u5909\u63db\u306e\u5805\u7262\u306a\u5b9f\u88c5<\/strong> \u8907\u6570\u306e\u5224\u5b9a\u624b\u6cd5\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u3088\u308a\u6b63\u78ba\u306b\u6587\u5b57\u30b3\u30fc\u30c9\u3092\u5224\u5b9a\u3059\u308b\u65b9\u6cd5\uff1a <\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function detectAndConvertEncoding($file, $targetEncoding = 'UTF-8') {\n    \/\/ \u30d5\u30a1\u30a4\u30eb\u306e\u5148\u982d\u90e8\u5206\u3092\u8aad\u307f\u8fbc\u3080\n    $handle = fopen($file, 'rb');\n    $sampleSize = 1000; \/\/ \u30b5\u30f3\u30d7\u30eb\u30b5\u30a4\u30ba\n    $sample = fread($handle, $sampleSize);\n    rewind($handle);\n\n    \/\/ BOM\u306e\u78ba\u8a8d\n    $encoding = null;\n    if (substr($sample, 0, 3) === \"\\xEF\\xBB\\xBF\") {\n        $encoding = 'UTF-8';\n        \/\/ BOM\u3092\u30b9\u30ad\u30c3\u30d7\n        fseek($handle, 3);\n    }\n\n    \/\/ \u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u304c\u672a\u78ba\u5b9a\u306e\u5834\u5408\u306f\u691c\u51fa\n    if (!$encoding) {\n        \/\/ \u8907\u6570\u306e\u691c\u51fa\u65b9\u6cd5\u3092\u8a66\u3059\n        $encoding = mb_detect_encoding($sample, ['UTF-8', 'SJIS', 'EUC-JP', 'ASCII'], true);\n\n        \/\/ mb_detect_encoding\u304c\u5931\u6557\u3057\u305f\u5834\u5408\u306e\u8ffd\u52a0\u30c1\u30a7\u30c3\u30af\n        if (!$encoding) {\n            \/\/ SJIS\u306b\u7279\u5fb4\u7684\u306a\u30d0\u30a4\u30c8\u30d1\u30bf\u30fc\u30f3\u3092\u30c1\u30a7\u30c3\u30af\n            if (preg_match('\/[\\x81-\\x9F\\xE0-\\xFC][\\x40-\\x7E\\x80-\\xFC]\/', $sample)) {\n                $encoding = 'SJIS';\n            }\n            \/\/ EUC-JP\u306b\u7279\u5fb4\u7684\u306a\u30d1\u30bf\u30fc\u30f3\u3092\u30c1\u30a7\u30c3\u30af\n            else if (preg_match('\/[\\xA1-\\xFE][\\xA1-\\xFE]\/', $sample)) {\n                $encoding = 'EUC-JP';\n            }\n            \/\/ \u305d\u308c\u3067\u3082\u4e0d\u660e\u306a\u5834\u5408\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\n            else {\n                $encoding = 'SJIS'; \/\/ \u65e5\u672c\u8a9e\u74b0\u5883\u3067\u306e\u4e00\u822c\u7684\u306a\u30c7\u30d5\u30a9\u30eb\u30c8\n            }\n        }\n    }\n\n    \/\/ \u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\u304c\u5fc5\u8981\u304b\u30c1\u30a7\u30c3\u30af\n    if ($encoding !== $targetEncoding) {\n        \/\/ \u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\n        $tempFile = tempnam(sys_get_temp_dir(), 'csv_');\n        $tempHandle = fopen($tempFile, 'wb');\n\n        \/\/ 1\u884c\u305a\u3064\u5909\u63db\n        while (($line = fgets($handle)) !== false) {\n            \/\/ \u6587\u5b57\u30b3\u30fc\u30c9\u5909\u63db\n            $convertedLine = mb_convert_encoding($line, $targetEncoding, $encoding);\n            fputs($tempHandle, $convertedLine);\n        }\n\n        \/\/ \u30cf\u30f3\u30c9\u30eb\u3092\u9589\u3058\u308b\n        fclose($handle);\n        fclose($tempHandle);\n\n        return [\n            'success' =&gt; true,\n            'file' =&gt; $tempFile,\n            'original_encoding' =&gt; $encoding,\n            'converted' =&gt; true\n        ];\n    } else {\n        \/\/ \u5909\u63db\u4e0d\u8981\u306e\u5834\u5408\u306f\u5143\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u8fd4\u3059\n        fclose($handle);\n\n        return [\n            'success' =&gt; true,\n            'file' =&gt; $file,\n            'original_encoding' =&gt; $encoding,\n            'converted' =&gt; false\n        ];\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$result = detectAndConvertEncoding('data.csv', 'UTF-8');\nif ($result['success']) {\n    echo \"\u5143\u306e\u6587\u5b57\u30b3\u30fc\u30c9: \" . $result['original_encoding'] . \"&lt;br&gt;\";\n    echo \"\u5909\u63db\u304c\u884c\u308f\u308c\u307e\u3057\u305f\u304b: \" . ($result['converted'] ? '\u306f\u3044' : '\u3044\u3044\u3048') . \"&lt;br&gt;\";\n\n    \/\/ \u5909\u63db\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u3092\u51e6\u7406\n    $csv = new SplFileObject($result['file']);\n    $csv-&gt;setFlags(SplFileObject::READ_CSV);\n\n    \/\/ \u30c7\u30fc\u30bf\u3092\u8868\u793a\n    foreach ($csv as $row) {\n        \/\/ \u51e6\u7406...\n    }\n\n    \/\/ \u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u304c\u4f5c\u6210\u3055\u308c\u305f\u5834\u5408\u306f\u524a\u9664\n    if ($result['converted'] &amp;&amp; $result['file'] !== 'data.csv') {\n        unlink($result['file']);\n    }\n}<\/pre>\n\n\n\n<p><strong>\u305d\u306e\u4ed6\u306e\u3088\u304f\u3042\u308b\u30a8\u30e9\u30fc\u3068\u89e3\u6c7a\u7b56:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>CSV\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u4e0d\u4e00\u81f4\u306b\u3088\u308b\u30a8\u30e9\u30fc<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ CSV\u306e\u5217\u6570\u306e\u4e00\u8cab\u6027\u3092\u30c1\u30a7\u30c3\u30af\nfunction validateCsvStructure($file) {\n    $handle = fopen($file, 'r');\n    $headers = fgetcsv($handle);\n    $headerCount = count($headers);\n\n    $lineNumber = 1; \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u304c1\u884c\u76ee\n    $inconsistentLines = [];\n\n    while (($row = fgetcsv($handle)) !== FALSE) {\n        $lineNumber++;\n\n        \/\/ \u5217\u6570\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\u3092\u30c1\u30a7\u30c3\u30af\n        if (count($row) !== $headerCount) {\n            $inconsistentLines[] = [\n                'line' =&gt; $lineNumber,\n                'expected' =&gt; $headerCount,\n                'actual' =&gt; count($row)\n            ];\n        }\n    }\n\n    fclose($handle);\n\n    return [\n        'valid' =&gt; empty($inconsistentLines),\n        'inconsistent_lines' =&gt; $inconsistentLines\n    ];\n}<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u4e0d\u8db3\u30a8\u30e9\u30fc<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u76e3\u8996\u3057\u306a\u304c\u3089\u51e6\u7406\nfunction processLargeCsvWithMemoryCheck($file, $callback) {\n    \/\/ \u30e1\u30e2\u30ea\u5236\u9650\u3092\u78ba\u8a8d\n    $memoryLimit = ini_get('memory_limit');\n    echo \"\u73fe\u5728\u306e\u30e1\u30e2\u30ea\u5236\u9650: \" . $memoryLimit . \"&lt;br&gt;\";\n\n    \/\/ \u5fc5\u8981\u306b\u5fdc\u3058\u3066\u4e00\u6642\u7684\u306b\u5897\u52a0\n    ini_set('memory_limit', '512M');\n\n    $handle = fopen($file, 'r');\n    $headers = fgetcsv($handle);\n\n    $processed = 0;\n    $memoryWarning = false;\n\n    while (($row = fgetcsv($handle)) !== FALSE) {\n        \/\/ \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u30c1\u30a7\u30c3\u30af\n        $memoryUsage = memory_get_usage() \/ 1024 \/ 1024; \/\/ MB\n\n        \/\/ \u8b66\u544a\u3057\u304d\u3044\u5024\uff08\u4f8b\uff1a\u5272\u308a\u5f53\u3066\u3089\u308c\u305f\u30e1\u30e2\u30ea\u306e80%\uff09\n        $warningThreshold = intval(ini_get('memory_limit')) * 0.8;\n\n        if ($memoryUsage &gt; $warningThreshold &amp;&amp; !$memoryWarning) {\n            echo \"\u8b66\u544a: \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u304c\u9ad8\u304f\u306a\u3063\u3066\u3044\u307e\u3059 ({$memoryUsage} MB)&lt;br&gt;\";\n            $memoryWarning = true;\n        }\n\n        \/\/ \u30c7\u30fc\u30bf\u3092\u51e6\u7406\n        $data = array_combine($headers, $row);\n        $callback($data);\n\n        $processed++;\n\n        \/\/ \u30e1\u30e2\u30ea\u89e3\u653e\n        unset($data, $row);\n\n        \/\/ \u5b9a\u671f\u7684\u306b\u30ac\u30d9\u30fc\u30b8\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\n        if ($processed % 1000 === 0) {\n            gc_collect_cycles();\n        }\n    }\n\n    fclose($handle);\n\n    \/\/ \u30e1\u30e2\u30ea\u5236\u9650\u3092\u5143\u306b\u623b\u3059\n    ini_set('memory_limit', $memoryLimit);\n\n    return $processed;\n}<\/pre>\n\n\n\n<p>CSV\u30d5\u30a1\u30a4\u30eb\u51e6\u7406\u3067\u306e\u30a8\u30e9\u30fc\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u306e\u554f\u984c\u3001\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3\u3001\u30e1\u30e2\u30ea\u5236\u9650\u3001\u6587\u5b57\u30b3\u30fc\u30c9\u306a\u3069\u3001\u591a\u5c90\u306b\u308f\u305f\u308a\u307e\u3059\u3002\u5b9f\u969b\u306e\u554f\u984c\u89e3\u6c7a\u306b\u306f\u3001\u4e0a\u8a18\u306e\u3088\u3046\u306a\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u95a2\u6570\u3092\u4f7f\u3063\u3066\u3001\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3092\u6bb5\u968e\u7684\u306b\u7279\u5b9a\u3057\u3066\u3044\u304f\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u52b9\u679c\u7684\u3067\u3059\u3002\u7279\u306b\u672c\u756a\u74b0\u5883\u3067\u306f\u3001\u9069\u5207\u306a\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3068\u30ed\u30b0\u8a18\u9332\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u554f\u984c\u306e\u65e9\u671f\u767a\u898b\u3068\u89e3\u6c7a\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-39\">\u307e\u3068\u3081\uff1a\u3042\u306a\u305f\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u6700\u9069\u306aCSV\u8aad\u307f\u8fbc\u307f\u65b9\u6cd5\u306e\u9078\u3073\u65b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-40\">\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u5225\u304a\u3059\u3059\u3081\u306eCSV\u8aad\u307f\u8fbc\u307f\u624b\u6cd5<\/h3>\n\n\n\n<p>\u3053\u308c\u307e\u30677\u3064\u306e\u7570\u306a\u308bCSV\u8aad\u307f\u8fbc\u307f\u65b9\u6cd5\u3068\u305d\u308c\u306b\u95a2\u9023\u3059\u308b\u69d8\u3005\u306a\u6280\u8853\u7684\u306a\u5074\u9762\u3092\u7d39\u4ecb\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u6700\u9069\u306a\u65b9\u6cd5\u3092\u9078\u3076\u306b\u306f\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u8981\u4ef6\u3084\u5236\u7d04\u3092\u8003\u616e\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u5225\u306e\u304a\u3059\u3059\u3081\u624b\u6cd5\u3092\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u5c0f\u898f\u6a21\u306aCSV\u30d5\u30a1\u30a4\u30eb\uff08\u6570\u767e\u301c\u6570\u5343\u884c\uff09\u306e\u51e6\u7406<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u304a\u3059\u3059\u3081<\/strong>: <code>file()<\/code> + <code>str_getcsv()<\/code> \u306e\u7d44\u307f\u5408\u308f\u305b<\/li>\n\n\n\n<li><strong>\u7406\u7531<\/strong>: \u30b7\u30f3\u30d7\u30eb\u3067\u8aad\u307f\u3084\u3059\u3044\u30b3\u30fc\u30c9\u3001\u5341\u5206\u306a\u51e6\u7406\u901f\u5ea6\u3001\u5c11\u306a\u3044\u30b3\u30fc\u30c9\u884c\u6570<\/li>\n\n\n\n<li><strong>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/strong>: <\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$lines = file('small_data.csv', FILE_IGNORE_NEW_LINES);\n$headers = str_getcsv(array_shift($lines));\n$data = array_map(function($line) use ($headers) {\n    return array_combine($headers, str_getcsv($line));\n}, $lines);<\/pre>\n\n\n\n<p><strong>2. \u4e2d\u898f\u6a21\u306aCSV\u30d5\u30a1\u30a4\u30eb\uff08\u6570\u4e07\u884c\uff09\u306e\u51e6\u7406<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u304a\u3059\u3059\u3081<\/strong>: <code>SplFileObject<\/code> \u30af\u30e9\u30b9\u3092\u4f7f\u7528<\/li>\n\n\n\n<li><strong>\u7406\u7531<\/strong>: \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u306e\u67d4\u8edf\u6027\u3001\u30e1\u30e2\u30ea\u52b9\u7387\u3001\u30a4\u30c6\u30ec\u30fc\u30bf\u3068\u3057\u3066\u306e\u6a5f\u80fd<\/li>\n\n\n\n<li><strong>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/strong>: <\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$csv = new SplFileObject('medium_data.csv');\n$csv-&gt;setFlags(SplFileObject::READ_CSV);\n$csv-&gt;rewind();\n$headers = $csv-&gt;current();\n$csv-&gt;next();\n\nwhile (!$csv-&gt;eof()) {\n    $row = $csv-&gt;current();\n    if ($row[0] !== null) {\n        $data = array_combine($headers, $row);\n        \/\/ \u30c7\u30fc\u30bf\u51e6\u7406...\n    }\n    $csv-&gt;next();\n}<\/pre>\n\n\n\n<p><strong>3. \u5927\u898f\u6a21\u306aCSV\u30d5\u30a1\u30a4\u30eb\uff08\u6570\u5341\u4e07\u884c\u4ee5\u4e0a\uff09\u306e\u51e6\u7406<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u304a\u3059\u3059\u3081<\/strong>: \u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u3068\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u306e\u7d44\u307f\u5408\u308f\u305b<\/li>\n\n\n\n<li><strong>\u7406\u7531<\/strong>: \u6700\u5c0f\u9650\u306e\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3001\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3<\/li>\n\n\n\n<li><strong>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/strong>: <\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function readCsv($filename) {\n    $handle = fopen($filename, 'r');\n    $headers = fgetcsv($handle);\n\n    while (($row = fgetcsv($handle)) !== FALSE) {\n        yield array_combine($headers, $row);\n    }\n\n    fclose($handle);\n}\n\nforeach (readCsv('large_data.csv') as $row) {\n    \/\/ \u30c7\u30fc\u30bf\u51e6\u7406...\n}<\/pre>\n\n\n\n<p><strong>4. \u8907\u96d1\u306a\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3084\u5909\u63db\u304c\u5fc5\u8981\u306aCSV\u51e6\u7406<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u304a\u3059\u3059\u3081<\/strong>: League\\Csv \u30e9\u30a4\u30d6\u30e9\u30ea<\/li>\n\n\n\n<li><strong>\u7406\u7531<\/strong>: \u5805\u7262\u306aAPI\u3001\u5145\u5b9f\u3057\u305f\u6a5f\u80fd\u3001\u512a\u308c\u305f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/li>\n\n\n\n<li><strong>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/strong>: <\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">use League\\Csv\\Reader;\nuse League\\Csv\\Statement;\n\n$csv = Reader::createFromPath('data.csv', 'r');\n$csv-&gt;setHeaderOffset(0);\n\n$stmt = Statement::create()\n    -&gt;where(function(array $record) {\n        return $record['status'] === 'active';\n    })\n    -&gt;limit(50);\n\n$records = $stmt-&gt;process($csv);\nforeach ($records as $record) {\n    \/\/ \u30c7\u30fc\u30bf\u51e6\u7406...\n}<\/pre>\n\n\n\n<p><strong>5. Excel\u3068\u306e\u4e92\u63db\u6027\u304c\u5fc5\u8981\u306a\u5834\u5408<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u304a\u3059\u3059\u3081<\/strong>: PHPSpreadsheet \u30e9\u30a4\u30d6\u30e9\u30ea<\/li>\n\n\n\n<li><strong>\u7406\u7531<\/strong>: Excel\u5f62\u5f0f\u3068\u306e\u4e92\u63db\u6027\u3001\u9ad8\u5ea6\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u51e6\u7406<\/li>\n\n\n\n<li><strong>\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/strong>: <\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">use PhpOffice\\PhpSpreadsheet\\IOFactory;\n\n$spreadsheet = IOFactory::load('data.xlsx');\n$worksheet = $spreadsheet-&gt;getActiveSheet();\n$data = $worksheet-&gt;toArray();\n\n\/\/ CSV\u3068\u3057\u3066\u4fdd\u5b58\n$writer = IOFactory::createWriter($spreadsheet, 'Csv');\n$writer-&gt;save('exported_data.csv');<\/pre>\n\n\n\n<p><strong>6. \u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306eCSV\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u51e6\u7406<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u304a\u3059\u3059\u3081<\/strong>: Ajax + PHP \u306e\u7d44\u307f\u5408\u308f\u305b<\/li>\n\n\n\n<li><strong>\u7406\u7531<\/strong>: \u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u306e\u5411\u4e0a\u3001\u975e\u540c\u671f\u51e6\u7406<\/li>\n\n\n\n<li><strong>\u5b9f\u88c5\u30dd\u30a4\u30f3\u30c8<\/strong>:\n<ul class=\"wp-block-list\">\n<li>\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u3067\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3<\/li>\n\n\n\n<li>\u30d7\u30ed\u30b0\u30ec\u30b9\u30d0\u30fc\u306b\u3088\u308b\u9032\u6357\u8868\u793a<\/li>\n\n\n\n<li>\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u51e6\u7406<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>7. \u65e5\u672c\u8a9eCSV\u306e\u51e6\u7406\uff08\u6587\u5b57\u30b3\u30fc\u30c9\u5bfe\u5fdc\u304c\u5fc5\u8981\u306a\u5834\u5408\uff09<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u304a\u3059\u3059\u3081<\/strong>: \u30ab\u30b9\u30bf\u30e0\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u51e6\u7406\u95a2\u6570 + <code>fgetcsv()<\/code><\/li>\n\n\n\n<li><strong>\u7406\u7531<\/strong>: \u67d4\u8edf\u306a\u6587\u5b57\u30b3\u30fc\u30c9\u691c\u51fa\u3068\u5909\u63db<\/li>\n\n\n\n<li><strong>\u5b9f\u88c5\u30dd\u30a4\u30f3\u30c8<\/strong>:\n<ul class=\"wp-block-list\">\n<li>BOM\u306e\u691c\u51fa\u3068\u9069\u5207\u306a\u51e6\u7406<\/li>\n\n\n\n<li>\u8907\u6570\u306e\u6587\u5b57\u30b3\u30fc\u30c9\u691c\u51fa\u65b9\u6cd5\u306e\u7d44\u307f\u5408\u308f\u305b<\/li>\n\n\n\n<li>\u30b9\u30c8\u30ea\u30fc\u30e0\u30d5\u30a3\u30eb\u30bf\u3092\u4f7f\u3063\u305f\u52b9\u7387\u7684\u306a\u5909\u63db<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-41\">\u3055\u3089\u306a\u308b\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9\u3068\u95a2\u9023\u6280\u8853\u306e\u7d39\u4ecb<\/h3>\n\n\n\n<p>PHP\u3067\u306eCSV\u51e6\u7406\u306b\u3064\u3044\u3066\u3055\u3089\u306b\u5b66\u3073\u305f\u3044\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u30ea\u30bd\u30fc\u30b9\u304c\u5f79\u7acb\u3061\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/strong>\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.php.net\/manual\/ja\/function.fgetcsv.php\">PHP \u30de\u30cb\u30e5\u30a2\u30eb \u2013 fgetcsv<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.php.net\/manual\/ja\/function.str-getcsv.php\">PHP \u30de\u30cb\u30e5\u30a2\u30eb \u2013 str_getcsv<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.php.net\/manual\/ja\/class.splfileobject.php\">PHP \u30de\u30cb\u30e5\u30a2\u30eb \u2013 SplFileObject<\/a><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30e9\u30a4\u30d6\u30e9\u30ea\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/strong>\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/csv.thephpleague.com\/\">League\\CSV \u30e9\u30a4\u30d6\u30e9\u30ea<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/phpspreadsheet.readthedocs.io\/\">PHPSpreadsheet \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u95a2\u9023\u6280\u8853<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3068CSV\u306e\u9023\u643a\uff1aPDO\u3092\u4f7f\u3063\u305fCSV\u306e\u30a4\u30f3\u30dd\u30fc\u30c8\/\u30a8\u30af\u30b9\u30dd\u30fc\u30c8<\/li>\n\n\n\n<li>API\u3068CSV\u306e\u9023\u643a\uff1aRESTful API\u304b\u3089\u53d6\u5f97\u3057\u305f\u30c7\u30fc\u30bf\u306eCSV\u5f62\u5f0f\u3067\u306e\u63d0\u4f9b<\/li>\n\n\n\n<li>\u30d0\u30c3\u30c1\u51e6\u7406\uff1acron\u3092\u4f7f\u3063\u305f\u5b9a\u671f\u7684\u306aCSV\u51e6\u7406\u306e\u81ea\u52d5\u5316<\/li>\n\n\n\n<li>\u30ad\u30e5\u30fc\u51e6\u7406\uff1aRabbitMQ\u3084Redis\u3092\u4f7f\u3063\u305f\u975e\u540c\u671fCSV\u51e6\u7406<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5206\u6563\u51e6\u7406\uff1a\u5927\u898f\u6a21CSV\u30d5\u30a1\u30a4\u30eb\u306e\u5206\u5272\u51e6\u7406<\/li>\n\n\n\n<li>\u30ad\u30e3\u30c3\u30b7\u30e5\u6226\u7565\uff1a\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3055\u308c\u308bCSV\u30c7\u30fc\u30bf\u306e\u30ad\u30e3\u30c3\u30b7\u30e5<\/li>\n\n\n\n<li>\u30de\u30a4\u30af\u30ed\u30b5\u30fc\u30d3\u30b9\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\uff1aCSV\u51e6\u7406\u5c02\u7528\u306e\u30b5\u30fc\u30d3\u30b9\u8a2d\u8a08<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>PHP\u306b\u3088\u308bCSV\u51e6\u7406\u306f\u3001\u5358\u7d14\u306a\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f\u304b\u3089\u9ad8\u5ea6\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u307e\u3067\u5e45\u5e83\u304f\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002\u91cd\u8981\u306a\u306e\u306f\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u898f\u6a21\u3084\u8981\u4ef6\u306b\u5408\u308f\u305b\u3066\u9069\u5207\u306a\u624b\u6cd5\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u5c0f\u898f\u6a21\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u6a19\u6e96\u95a2\u6570\u3067\u30b7\u30f3\u30d7\u30eb\u306b\u3001\u5927\u898f\u6a21\u307e\u305f\u306f\u8907\u96d1\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u5c02\u7528\u30e9\u30a4\u30d6\u30e9\u30ea\u3084\u30ab\u30b9\u30bf\u30e0\u5b9f\u88c5\u3092\u691c\u8a0e\u3059\u308b\u3068\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u6700\u7d42\u7684\u306b\u3001\u8aad\u307f\u8fbc\u307f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3001\u30e1\u30e2\u30ea\u52b9\u7387\u3001\u30b3\u30fc\u30c9\u306e\u4fdd\u5b88\u6027\u3001\u30a8\u30e9\u30fc\u51e6\u7406\u306e\u5805\u7262\u6027\u306a\u3069\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u8003\u616e\u3057\u3066\u3001\u6700\u9069\u306a\u65b9\u6cd5\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u6210\u529f\u3078\u306e\u9375\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Warning: Undefined array key &#8220;is_admin&#8221; in \/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/ &#8230; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,63],"tags":[],"class_list":{"0":"post-3739","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-php","7":"category-php-syntax","8":"nothumb"},"_links":{"self":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/3739","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3739"}],"version-history":[{"count":3,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/3739\/revisions"}],"predecessor-version":[{"id":3747,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/3739\/revisions\/3747"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3739"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3739"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3739"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}