{"id":3392,"date":"2025-03-24T08:46:18","date_gmt":"2025-03-23T23:46:18","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=3392"},"modified":"2025-03-24T08:46:49","modified_gmt":"2025-03-23T23:46:49","slug":"php%e3%81%aeforeach%e6%96%87%e5%ae%8c%e5%85%a8%e3%83%9e%e3%82%b9%e3%82%bf%e3%83%bc%ef%bc%81%e5%ae%9f%e8%b7%b5%e3%81%a7%e4%bd%bf%e3%81%88%e3%82%8b12%e3%81%ae%e6%b4%bb%e7%94%a8%e4%be%8b%e3%81%a8","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=3392","title":{"rendered":"PHP\u306eforeach\u6587\u5b8c\u5168\u30de\u30b9\u30bf\u30fc\uff01\u5b9f\u8df5\u3067\u4f7f\u3048\u308b12\u306e\u6d3b\u7528\u4f8b\u3068\u6ce8\u610f\u70b9"},"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\">foreach\u6587\u3068\u306f\uff1fPHP\u306e\u914d\u5217\u51e6\u7406\u306e\u57fa\u672c\u3092\u7406\u89e3\u3057\u3088\u3046<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">foreach\u6587\u306e\u57fa\u672c\u7684\u306a\u66f8\u304d\u65b9\u3068\u52d5\u4f5c\u306e\u4ed5\u7d44\u307f<\/a>      <\/li>      <li>        <a href=\"#i-2\">\u306a\u305cPHP\u3067\u306fforeach\u304c\u91cd\u8981\u306a\u306e\u304b\uff1f\u4ed6\u306e\u7e70\u308a\u8fd4\u3057\u6587\u3068\u306e\u9055\u3044<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-3\">foreach\u6587\u3067\u4f7f\u7528\u3055\u308c\u308b\u91cd\u8981\u306a\u7528\u8a9e\u3068\u6982\u5ff5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-4\">foreach\u6587\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3068\u5b9f\u8df5\u4f8b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-5\">\u901a\u5e38\u306e\u914d\u5217\u3067\u306eforeach\u6587\u306e\u4f7f\u7528\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-6\">\u9023\u60f3\u914d\u5217\u3067\u306e\u52b9\u679c\u7684\u306aforeach\u6587\u306e\u6d3b\u7528<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-7\">\u591a\u6b21\u5143\u914d\u5217\u3092foreach\u6587\u3067\u51e6\u7406\u3059\u308b\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-8\">foreach\u6587\u3067\u3088\u304f\u3042\u308b\u3064\u307e\u305a\u304d\u30dd\u30a4\u30f3\u30c8\u3068\u89e3\u6c7a\u7b56<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-9\">\u53c2\u7167\u6e21\u3057(&amp;)\u4f7f\u7528\u6642\u306e\u6ce8\u610f\u70b9\u3068\u6b63\u3057\u3044\u4f7f\u3044\u65b9<\/a>      <\/li>      <li>        <a href=\"#i-10\">\u30eb\u30fc\u30d7\u5185\u3067\u306e\u914d\u5217\u64cd\u4f5c\u306e\u5834\u5408\u3088\u304f\u3042\u308b\u3053\u3068<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-11\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u6700\u9069\u5316\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u8003\u616e\u70b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-12\">\u5b9f\u8df5\u7684\u306aforeach\u6587\u306e\u6d3b\u7528\u30d1\u30bf\u30fc\u30f3\u96c6<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-13\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u53d6\u5f97\u7d50\u679c\u306e\u52b9\u7387\u7684\u306a\u51e6\u7406\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-14\">JSON\u30c7\u30fc\u30bf\u306e\u64cd\u4f5c\u3068API\u8fd4\u5374\u5024\u306e\u51e6\u7406<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-15\">\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3067\u306e\u6d3b\u7528\u4f8b\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-16\">foreach\u6587\u306e\u5236\u5fa1\u3068\u30d5\u30ed\u30fc\u7ba1\u7406<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-17\">\u30d6\u30ec\u30a4\u30af\u6587\u3068\u7d99\u7d9a\u6587\u306e\u6b63\u3057\u3044\u4f7f\u7528\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-18\">\u30cd\u30b9\u30c8\u3057\u305f\u30eb\u30fc\u30d7\u306e\u5236\u5fa1\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-19\">\u4f8b\u5916\u51e6\u7406\u3068\u306e\u7d44\u307f\u5408\u308f\u305b<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-20\">foreach\u6587\u3092\u4f7f\u7528\u3057\u305f\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u30ec\u30b7\u30d4\u96c6<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-21\">CSV\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u3068\u51e6\u7406\u306e\u5b9f\u88c5\u4f8b<\/a>      <\/li>      <li>        <a href=\"#i-22\">HTML\u30c6\u30fc\u30d6\u30eb\u306e\u52d5\u7684\u751f\u6210\u624b\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-23\">\u914d\u5217\u306e\u5927\u91cf\u30fb\u7d71\u8a08\u51e6\u7406\u306e\u5b9f\u88c5\u65b9\u6cd5<\/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\">foreach\u6587\u3068\u306f\uff1fPHP\u306e\u914d\u5217\u51e6\u7406\u306e\u57fa\u672c\u3092\u7406\u89e3\u3057\u3088\u3046<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">foreach\u6587\u306e\u57fa\u672c\u7684\u306a\u66f8\u304d\u65b9\u3068\u52d5\u4f5c\u306e\u4ed5\u7d44\u307f<\/h3>\n\n\n\n<p>foreach\u6587\u306f\u3001PHP\u3067\u914d\u5217\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u8981\u7d20\u3092\u7c21\u5358\u306b\u53cd\u5fa9\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u5236\u5fa1\u69cb\u9020\u3067\u3059\u3002\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u4ee5\u4e0b\u306e2\u3064\u306e\u5f62\u5f0f\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=\"\">\/\/ \u5024\u306e\u307f\u3092\u53d6\u5f97\u3059\u308b\u5f62\u5f0f\nforeach ($array as $value) {\n    \/\/ \u914d\u5217\u306e\u8981\u7d20\u306b\u5bfe\u3059\u308b\u51e6\u7406\n}\n\n\/\/ \u30ad\u30fc\u3068\u5024\u306e\u4e21\u65b9\u3092\u53d6\u5f97\u3059\u308b\u5f62\u5f0f\nforeach ($array as $key =&gt; $value) {\n    \/\/ \u30ad\u30fc\u3068\u5024\u3092\u4f7f\u7528\u3057\u305f\u51e6\u7406\n}\n<\/pre>\n\n\n\n<p>\u5177\u4f53\u7684\u306a\u4f7f\u7528\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u57fa\u672c\u7684\u306a\u914d\u5217\u306e\u51e6\u7406\n$fruits = ['\u308a\u3093\u3054', '\u30d0\u30ca\u30ca', '\u30aa\u30ec\u30f3\u30b8'];\nforeach ($fruits as $fruit) {\n    echo $fruit . \"\\n\";  \/\/ \u5404\u30d5\u30eb\u30fc\u30c4\u3092\u51fa\u529b\n}\n\n\/\/ \u30ad\u30fc\u3068\u5024\u3092\u4f7f\u7528\u3057\u305f\u51e6\u7406\n$prices = [\n    '\u308a\u3093\u3054' =&gt; 150,\n    '\u30d0\u30ca\u30ca' =&gt; 100,\n    '\u30aa\u30ec\u30f3\u30b8' =&gt; 120\n];\nforeach ($prices as $fruit =&gt; $price) {\n    echo \"{$fruit}\u306f{$price}\u5186\u3067\u3059\u3002\\n\";\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">\u306a\u305cPHP\u3067\u306fforeach\u304c\u91cd\u8981\u306a\u306e\u304b\uff1f\u4ed6\u306e\u7e70\u308a\u8fd4\u3057\u6587\u3068\u306e\u9055\u3044<\/h3>\n\n\n\n<p>PHP\u306b\u304a\u3044\u3066foreach\u304c\u91cd\u8981\u8996\u3055\u308c\u308b\u7406\u7531\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u53ef\u8aad\u6027\u306e\u9ad8\u3055<\/strong>\n<ul class=\"wp-block-list\">\n<li>for\u6587\u3068\u6bd4\u3079\u3066\u30b3\u30fc\u30c9\u304c\u30b7\u30f3\u30d7\u30eb\u3067\u7406\u89e3\u3057\u3084\u3059\u3044<\/li>\n\n\n\n<li>\u914d\u5217\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u7ba1\u7406\u304c\u4e0d\u8981<\/li>\n\n\n\n<li>\u610f\u56f3\u304c\u660e\u78ba\u306b\u4f1d\u308f\u308b\u30b3\u30fc\u30c9\u304c\u66f8\u3051\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u67d4\u8edf\u6027<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u9023\u60f3\u914d\u5217\u306e\u51e6\u7406\u304c\u5bb9\u6613<\/li>\n\n\n\n<li>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u8d70\u67fb\u306b\u3082\u4f7f\u7528\u53ef\u80fd<\/li>\n\n\n\n<li>\u591a\u6b21\u5143\u914d\u5217\u306e\u51e6\u7406\u3082\u76f4\u611f\u7684<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u6bd4\u8f03\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$users = ['\u7530\u4e2d', '\u9234\u6728', '\u4f50\u85e4'];\n\n\/\/ for\u6587\u3067\u306e\u51e6\u7406\nfor ($i = 0; $i &lt; count($users); $i++) {\n    echo $users[$i] . \"\\n\";\n}\n\n\/\/ foreach\u3067\u306e\u51e6\u7406\nforeach ($users as $user) {\n    echo $user . \"\\n\";\n}\n\n\/\/ \u9023\u60f3\u914d\u5217\u306e\u5834\u5408\u3001foreach\u306e\u512a\u4f4d\u6027\u304c\u66f4\u306b\u969b\u7acb\u3064\n$userAges = ['\u7530\u4e2d' =&gt; 25, '\u9234\u6728' =&gt; 30, '\u4f50\u85e4' =&gt; 28];\nforeach ($userAges as $name =&gt; $age) {\n    echo \"{$name}\u3055\u3093\u306f{$age}\u6b73\u3067\u3059\u3002\\n\";\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-3\">foreach\u6587\u3067\u4f7f\u7528\u3055\u308c\u308b\u91cd\u8981\u306a\u7528\u8a9e\u3068\u6982\u5ff5<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a4\u30c6\u30ec\u30fc\u30bf\uff08Iterator\uff09<\/strong>\n<ul class=\"wp-block-list\">\n<li>PHP\u306e\u5185\u90e8\u3067\u4f7f\u7528\u3055\u308c\u308b\u914d\u5217\u8d70\u67fb\u306e\u4ed5\u7d44\u307f<\/li>\n\n\n\n<li>foreach\u6587\u306e\u5b9f\u884c\u6642\u306b\u81ea\u52d5\u7684\u306b\u4f5c\u6210\u3055\u308c\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u53c2\u7167\u6e21\u3057<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5024\u306e\u53c2\u7167\u6e21\u3057\nforeach ($array as &amp;$value) {\n    $value *= 2;  \/\/ \u914d\u5217\u306e\u8981\u7d20\u3092\u76f4\u63a5\u5909\u66f4\n}\nunset($value);  \/\/ \u53c2\u7167\u3092\u89e3\u9664\uff08\u91cd\u8981\uff09\n<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30eb\u30fc\u30d7\u5236\u5fa1<\/strong><\/li>\n<\/ol>\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=\"\">foreach ($items as $item) {\n    if ($item === '\u5bfe\u8c61\u5916') {\n        continue;  \/\/ \u6b21\u306e\u8981\u7d20\u3078\u30b9\u30ad\u30c3\u30d7\n    }\n    if ($item === '\u7d42\u4e86\u6761\u4ef6') {\n        break;  \/\/ \u30eb\u30fc\u30d7\u3092\u629c\u3051\u308b\n    }\n    \/\/ \u901a\u5e38\u306e\u51e6\u7406\n}\n<\/pre>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li><strong>\u30ad\u30fc\u3068\u5024\u306e\u53d6\u308a\u6271\u3044<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30ad\u30fc\uff1a\u914d\u5217\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u307e\u305f\u306f\u9023\u60f3\u914d\u5217\u306e\u30ad\u30fc<\/li>\n\n\n\n<li>\u5024\uff1a\u5404\u8981\u7d20\u306e\u5b9f\u969b\u306e\u5024<\/li>\n\n\n\n<li>\u3069\u3061\u3089\u3082\u5909\u6570\u3068\u3057\u3066\u6271\u3048\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30e1\u30e2\u30ea\u7ba1\u7406<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5927\u304d\u306a\u914d\u5217\u3092\u51e6\u7406\u3059\u308b\u969b\u306f\u53c2\u7167\u6e21\u3057\u3092\u691c\u8a0e<\/li>\n\n\n\n<li>\u30eb\u30fc\u30d7\u5f8c\u306e\u53c2\u7167\u89e3\u9664\u3092\u5fd8\u308c\u305a\u306b<\/li>\n\n\n\n<li>\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30ac\u30d9\u30fc\u30b8\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u8003\u616e<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u57fa\u672c\u3092\u62bc\u3055\u3048\u3066\u304a\u304f\u3079\u304d\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n<div id=\"id-6d94a7ea-c51e-49ce-9f07-f5958a32e0fa\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u9805\u76ee<\/th><th>\u63a8\u5968\u3055\u308c\u308b\u4f7f\u3044\u65b9<\/th><th>\u907f\u3051\u308b\u3079\u304d\u4f7f\u3044\u65b9<\/th><\/tr><\/thead><tbody><tr><td>\u53c2\u7167\u6e21\u3057<\/td><td>\u5927\u898f\u6a21\u30c7\u30fc\u30bf\u306e\u5909\u66f4\u6642\u306e\u307f<\/td><td>\u5358\u7d14\u306a\u8aad\u307f\u53d6\u308a\u51e6\u7406\u3067\u306e\u4f7f\u7528<\/td><\/tr><tr><td>\u914d\u5217\u64cd\u4f5c<\/td><td>\u30eb\u30fc\u30d7\u5916\u3067\u306e\u6e96\u5099<\/td><td>\u30eb\u30fc\u30d7\u5185\u3067\u306e\u914d\u5217\u8ffd\u52a0\/\u524a\u9664<\/td><\/tr><tr><td>\u5909\u6570\u540d<\/td><td>\u610f\u5473\u306e\u3042\u308b\u540d\u524d\u3092\u4f7f\u7528<\/td><td>\u6c4e\u7528\u7684\u3059\u304e\u308b\u540d\u524d<\/td><\/tr><tr><td>\u30a8\u30e9\u30fc\u51e6\u7406<\/td><td>try-catch\u30d6\u30ed\u30c3\u30af\u306e\u4f7f\u7528<\/td><td>\u30a8\u30e9\u30fc\u306e\u7121\u8996<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3089\u306e\u57fa\u672c\u6982\u5ff5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001foreach\u6587\u3092\u52b9\u679c\u7684\u306b\u6d3b\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-4\">foreach\u6587\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3068\u5b9f\u8df5\u4f8b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">\u901a\u5e38\u306e\u914d\u5217\u3067\u306eforeach\u6587\u306e\u4f7f\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u901a\u5e38\u306e\u914d\u5217\uff08\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217\uff09\u3067\u306eforeach\u6587\u306e\u4f7f\u7528\u306f\u3001\u6700\u3082\u57fa\u672c\u7684\u306a\u4f7f\u7528\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002\u914d\u5217\u306e\u5404\u8981\u7d20\u306b\u5bfe\u3057\u3066\u9806\u756a\u306b\u51e6\u7406\u3092\u884c\u3046\u5834\u5408\u306b\u4f7f\u7528\u3057\u307e\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=\"\">\/\/ \u57fa\u672c\u7684\u306a\u6570\u5024\u914d\u5217\u306e\u51e6\u7406\n$numbers = [1, 2, 3, 4, 5];\n$sum = 0;\nforeach ($numbers as $number) {\n    $sum += $number;  \/\/ \u5408\u8a08\u5024\u306e\u8a08\u7b97\n}\necho \"\u5408\u8a08: {$sum}\\n\";  \/\/ \u51fa\u529b: \u5408\u8a08: 15\n\n\/\/ \u914d\u5217\u8981\u7d20\u306e\u5909\u63db\n$fruits = ['apple', 'banana', 'orange'];\nforeach ($fruits as $index =&gt; $fruit) {\n    $fruits[$index] = ucfirst($fruit);  \/\/ \u5148\u982d\u6587\u5b57\u3092\u5927\u6587\u5b57\u306b\n}\n\/\/ \u7d50\u679c: ['Apple', 'Banana', 'Orange']\n<\/pre>\n\n\n\n<p>\u3088\u304f\u4f7f\u7528\u3055\u308c\u308b\u30d1\u30bf\u30fc\u30f3\uff1a<\/p>\n\n\n<div id=\"id-5233db00-5375-4505-94cc-0e8a5ea17f8e\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7528\u9014<\/th><th>\u30b3\u30fc\u30c9\u4f8b<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td>\u5024\u306e\u96c6\u8a08<\/td><td><code>foreach ($scores as $score) { $total += $score; }<\/code><\/td><td>\u5408\u8a08\u5024\u306e\u8a08\u7b97<\/td><\/tr><tr><td>\u6761\u4ef6\u4ed8\u304d\u51e6\u7406<\/td><td><code>foreach ($items as $item) { if ($item &gt; 10) { $filtered[] = $item; }}<\/code><\/td><td>\u6761\u4ef6\u306b\u5408\u3046\u8981\u7d20\u306e\u62bd\u51fa<\/td><\/tr><tr><td>\u8981\u7d20\u306e\u5909\u63db<\/td><td><code>foreach ($names as &amp;$name) { $name = strtoupper($name); }<\/code><\/td><td>\u5404\u8981\u7d20\u306e\u52a0\u5de5<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">\u9023\u60f3\u914d\u5217\u3067\u306e\u52b9\u679c\u7684\u306aforeach\u6587\u306e\u6d3b\u7528<\/h3>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u306f\u3001\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3067\u69cb\u6210\u3055\u308c\u308b\u914d\u5217\u3067\u3001foreach\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u52b9\u7387\u7684\u306b\u51e6\u7406\u3067\u304d\u307e\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=\"\">\/\/ \u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u306e\u51e6\u7406\n$user = [\n    'name' =&gt; '\u5c71\u7530\u592a\u90ce',\n    'age' =&gt; 30,\n    'email' =&gt; 'yamada@example.com'\n];\n\nforeach ($user as $key =&gt; $value) {\n    echo \"{$key}: {$value}\\n\";\n}\n\n\/\/ \u30c7\u30fc\u30bf\u306e\u691c\u8a3c\u4f8b\n$formData = [\n    'username' =&gt; 'user123',\n    'email' =&gt; 'test@example.com',\n    'age' =&gt; '25'\n];\n\n$errors = [];\nforeach ($formData as $field =&gt; $value) {\n    if (empty($value)) {\n        $errors[$field] = \"{$field}\u306f\u5fc5\u9808\u9805\u76ee\u3067\u3059\u3002\";\n    }\n}\n<\/pre>\n\n\n\n<p>\u5b9f\u8df5\u7684\u306a\u6d3b\u7528\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u8907\u6570\u30e6\u30fc\u30b6\u30fc\u306e\u30c7\u30fc\u30bf\u51e6\u7406\n$users = [\n    'user1' =&gt; ['name' =&gt; '\u5c71\u7530', 'points' =&gt; 100],\n    'user2' =&gt; ['name' =&gt; '\u9234\u6728', 'points' =&gt; 150],\n    'user3' =&gt; ['name' =&gt; '\u7530\u4e2d', 'points' =&gt; 80]\n];\n\n\/\/ \u30dd\u30a4\u30f3\u30c8\u304c100\u4ee5\u4e0a\u306e\u30e6\u30fc\u30b6\u30fc\u3092\u62bd\u51fa\n$highScoreUsers = [];\nforeach ($users as $userId =&gt; $userData) {\n    if ($userData['points'] &gt;= 100) {\n        $highScoreUsers[$userId] = $userData;\n    }\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">\u591a\u6b21\u5143\u914d\u5217\u3092foreach\u6587\u3067\u51e6\u7406\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u591a\u6b21\u5143\u914d\u5217\u306f\u3001\u914d\u5217\u306e\u4e2d\u306b\u914d\u5217\u304c nested \u3055\u308c\u305f\u69cb\u9020\u3067\u3001foreach\u6587\u3092\u30cd\u30b9\u30c8\u3057\u3066\u51e6\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5546\u54c1\u30ab\u30c6\u30b4\u30ea\u30fc\u3068\u5546\u54c1\u306e\u591a\u6b21\u5143\u914d\u5217\n$inventory = [\n    '\u679c\u7269' =&gt; [\n        ['name' =&gt; '\u308a\u3093\u3054', 'price' =&gt; 150, 'stock' =&gt; 100],\n        ['name' =&gt; '\u30d0\u30ca\u30ca', 'price' =&gt; 100, 'stock' =&gt; 150],\n    ],\n    '\u91ce\u83dc' =&gt; [\n        ['name' =&gt; '\u30c8\u30de\u30c8', 'price' =&gt; 120, 'stock' =&gt; 80],\n        ['name' =&gt; '\u304d\u3085\u3046\u308a', 'price' =&gt; 80, 'stock' =&gt; 200],\n    ]\n];\n\n\/\/ \u5728\u5eab\u72b6\u6cc1\u306e\u78ba\u8a8d\u3068\u5408\u8a08\u91d1\u984d\u306e\u8a08\u7b97\nforeach ($inventory as $category =&gt; $items) {\n    echo \"\u3010{$category}\u306e\u5546\u54c1\u4e00\u89a7\u3011\\n\";\n    $categoryTotal = 0;\n    \n    foreach ($items as $item) {\n        $itemTotal = $item['price'] * $item['stock'];\n        $categoryTotal += $itemTotal;\n        \n        echo \"{$item['name']}: {$item['stock']}\u500b (\u5358\u4fa1: {$item['price']}\u5186)\\n\";\n    }\n    \n    echo \"\u30ab\u30c6\u30b4\u30ea\u30fc\u5408\u8a08: {$categoryTotal}\u5186\\n\\n\";\n}\n<\/pre>\n\n\n\n<p>\u591a\u6b21\u5143\u914d\u5217\u51e6\u7406\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6df1\u3055\u306e\u5236\u5fa1<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">function processArray($array, $maxDepth = 3, $currentDepth = 0) {\n    if ($currentDepth &gt;= $maxDepth) {\n        return;\n    }\n    \n    foreach ($array as $key =&gt; $value) {\n        if (is_array($value)) {\n            processArray($value, $maxDepth, $currentDepth + 1);\n        } else {\n            \/\/ \u5024\u306e\u51e6\u7406\n            echo \"{$key}: {$value}\\n\";\n        }\n    }\n}\n<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30a8\u30e9\u30fc\u51e6\u7406\u306e\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">foreach ($data as $key =&gt; $value) {\n    try {\n        if (!isset($value['required_field'])) {\n            throw new Exception(\"\u5fc5\u9808\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u3042\u308a\u307e\u305b\u3093: {$key}\");\n        }\n        \/\/ \u51e6\u7406\u306e\u7d9a\u304d\n    } catch (Exception $e) {\n        error_log($e-&gt;getMessage());\n        continue;\n    }\n}\n<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u8df5\u4f8b\u3092\u901a\u3058\u3066\u3001foreach\u6587\u306e\u69d8\u3005\u306a\u4f7f\u7528\u65b9\u6cd5\u3068\u3001\u5b9f\u969b\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u3069\u306e\u3088\u3046\u306b\u6d3b\u7528\u3067\u304d\u308b\u304b\u3092\u7406\u89e3\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-8\">foreach\u6587\u3067\u3088\u304f\u3042\u308b\u3064\u307e\u305a\u304d\u30dd\u30a4\u30f3\u30c8\u3068\u89e3\u6c7a\u7b56<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u53c2\u7167\u6e21\u3057(&amp;)\u4f7f\u7528\u6642\u306e\u6ce8\u610f\u70b9\u3068\u6b63\u3057\u3044\u4f7f\u3044\u65b9<\/h3>\n\n\n\n<p>\u53c2\u7167\u6e21\u3057\u306f\u5f37\u529b\u306a\u6a5f\u80fd\u3067\u3059\u304c\u3001\u9069\u5207\u306b\u4f7f\u7528\u3057\u306a\u3044\u3068\u30d0\u30b0\u306e\u539f\u56e0\u3068\u306a\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u4e3b\u306a\u6ce8\u610f\u70b9\u3068\u5bfe\u7b56\u3092\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30eb\u30fc\u30d7\u5f8c\u306e\u53c2\u7167\u304c\u6b8b\u308b\u554f\u984c<\/strong><\/li>\n<\/ol>\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$numbers = [1, 2, 3];\nforeach ($numbers as &amp;$number) {\n    $number *= 2;\n}\n\/\/ $number\u306f\u307e\u3060\u6700\u5f8c\u306e\u8981\u7d20\u3078\u306e\u53c2\u7167\u3092\u4fdd\u6301\u3057\u3066\u3044\u308b\n\n\/\/ \u89e3\u6c7a\u7b56\uff1a\u30eb\u30fc\u30d7\u5f8c\u306b\u53c2\u7167\u3092\u89e3\u9664\u3059\u308b\nforeach ($numbers as &amp;$number) {\n    $number *= 2;\n}\nunset($number);  \/\/ \u53c2\u7167\u3092\u660e\u793a\u7684\u306b\u89e3\u9664\n<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30cd\u30b9\u30c8\u3057\u305f\u30eb\u30fc\u30d7\u3067\u306e\u53c2\u7167\u306e\u7af6\u5408<\/strong><\/li>\n<\/ol>\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$matrix = [[1, 2], [3, 4]];\nforeach ($matrix as &amp;$row) {\n    foreach ($row as &amp;$item) {  \/\/ \u4e8c\u91cd\u306e\u53c2\u7167\u3067\u8907\u96d1\u5316\n        $item *= 2;\n    }\n}\n\n\/\/ \u89e3\u6c7a\u7b56\uff1a\u5185\u90e8\u30eb\u30fc\u30d7\u3067\u306f\u53c2\u7167\u3092\u907f\u3051\u308b\nforeach ($matrix as &amp;$row) {\n    foreach ($row as $key =&gt; $item) {\n        $row[$key] = $item * 2;  \/\/ \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3067\u76f4\u63a5\u66f4\u65b0\n    }\n}\nunset($row);  \/\/ \u5916\u5074\u306e\u30eb\u30fc\u30d7\u306e\u53c2\u7167\u3082\u89e3\u9664\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">\u30eb\u30fc\u30d7\u5185\u3067\u306e\u914d\u5217\u64cd\u4f5c\u306e\u5834\u5408\u3088\u304f\u3042\u308b\u3053\u3068<\/h3>\n\n\n\n<p>foreach\u6587\u5185\u3067\u306e\u914d\u5217\u64cd\u4f5c\u306f\u3001\u4e88\u671f\u305b\u306c\u52d5\u4f5c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30eb\u30fc\u30d7\u4e2d\u306e\u914d\u5217\u8981\u7d20\u306e\u8ffd\u52a0\u30fb\u524a\u9664<\/strong><\/li>\n<\/ol>\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\uff1a\u30eb\u30fc\u30d7\u4e2d\u306b\u8981\u7d20\u3092\u8ffd\u52a0\n$numbers = [1, 2, 3];\nforeach ($numbers as $number) {\n    $numbers[] = $number * 2;  \/\/ \u7121\u9650\u30eb\u30fc\u30d7\u306e\u5371\u967a\u6027\n}\n\n\/\/ \u89e3\u6c7a\u7b56\uff1a\u65b0\u3057\u3044\u914d\u5217\u3092\u4f5c\u6210\n$numbers = [1, 2, 3];\n$result = [];\nforeach ($numbers as $number) {\n    $result[] = $number;\n    $result[] = $number * 2;\n}\n<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30eb\u30fc\u30d7\u4e2d\u306e\u30ad\u30fc\u306e\u5909\u66f4<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u554f\u984c\u306e\u3042\u308b\u30b3\u30fc\u30c9\n$data = ['a' =&gt; 1, 'b' =&gt; 2];\nforeach ($data as $key =&gt; $value) {\n    unset($data[$key]);  \/\/ \u73fe\u5728\u306e\u8981\u7d20\u3092\u524a\u9664\n    $data[$key . '_new'] = $value;  \/\/ \u65b0\u3057\u3044\u30ad\u30fc\u3067\u8ffd\u52a0\n}\n\n\/\/ \u89e3\u6c7a\u7b56\uff1a\u4e00\u6642\u914d\u5217\u3092\u4f7f\u7528\n$data = ['a' =&gt; 1, 'b' =&gt; 2];\n$temp = [];\nforeach ($data as $key =&gt; $value) {\n    $temp[$key . '_new'] = $value;\n}\n$data = $temp;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u6700\u9069\u5316\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u8003\u616e\u70b9<\/h3>\n\n\n\n<p>\u5927\u898f\u6a21\u306a\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u969b\u306f\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u6ce8\u610f\u3092\u6255\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u5b9f\u88c5\nfunction readLargeFile($filename) {\n    $handle = fopen($filename, 'r');\n    while (($line = fgets($handle)) !== false) {\n        yield trim($line);\n    }\n    fclose($handle);\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nforeach (readLargeFile('large_file.txt') as $line) {\n    \/\/ 1\u884c\u305a\u3064\u51e6\u7406\n    process($line);\n}\n<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30c1\u30e3\u30f3\u30af\u51e6\u7406\u306e\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\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=\"\">\/\/ \u5927\u304d\u306a\u914d\u5217\u3092\u5206\u5272\u3057\u3066\u51e6\u7406\nfunction processInChunks($array, $chunkSize = 1000) {\n    $chunks = array_chunk($array, $chunkSize);\n    foreach ($chunks as $chunk) {\n        foreach ($chunk as $item) {\n            \/\/ \u5404\u8981\u7d20\u306e\u51e6\u7406\n            process($item);\n        }\n        \/\/ \u30e1\u30e2\u30ea\u306e\u89e3\u653e\n        unset($chunk);\n    }\n}\n<\/pre>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n<div id=\"id-c820e207-ddf5-424f-821b-385b57434aff\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6700\u9069\u5316\u30dd\u30a4\u30f3\u30c8<\/th><th>\u63a8\u5968\u3055\u308c\u308b\u65b9\u6cd5<\/th><th>\u907f\u3051\u308b\u3079\u304d\u65b9\u6cd5<\/th><\/tr><\/thead><tbody><tr><td>\u30c7\u30fc\u30bf\u30a2\u30af\u30bb\u30b9<\/td><td>\u53c2\u7167\u6e21\u3057\u3092\u9069\u5207\u306b\u4f7f\u7528<\/td><td>\u4e0d\u8981\u306a\u53c2\u7167\u6e21\u3057\u306e\u4f7f\u7528<\/td><\/tr><tr><td>\u30e1\u30e2\u30ea\u7ba1\u7406<\/td><td>\u30c1\u30e3\u30f3\u30af\u51e6\u7406\u306e\u5b9f\u88c5<\/td><td>\u5168\u30c7\u30fc\u30bf\u306e\u4e00\u62ec\u8aad\u307f\u8fbc\u307f<\/td><\/tr><tr><td>\u914d\u5217\u64cd\u4f5c<\/td><td>\u5225\u914d\u5217\u3067\u306e\u7d50\u679c\u7ba1\u7406<\/td><td>\u30eb\u30fc\u30d7\u5185\u3067\u306e\u52d5\u7684\u306a\u914d\u5217\u64cd\u4f5c<\/td><\/tr><tr><td>\u30ea\u30bd\u30fc\u30b9\u89e3\u653e<\/td><td>\u660e\u793a\u7684\u306aunset()\u306e\u4f7f\u7528<\/td><td>\u30ea\u30bd\u30fc\u30b9\u306e\u653e\u7f6e<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3089\u306e\u6ce8\u610f\u70b9\u3068\u89e3\u6c7a\u7b56\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5b89\u5b9a\u3057\u305f\u52b9\u7387\u7684\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-12\">\u5b9f\u8df5\u7684\u306aforeach\u6587\u306e\u6d3b\u7528\u30d1\u30bf\u30fc\u30f3\u96c6<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u53d6\u5f97\u7d50\u679c\u306e\u52b9\u7387\u7684\u306a\u51e6\u7406\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u305f\u30ec\u30b3\u30fc\u30c9\u306e\u51e6\u7406\u306f\u3001foreach\u6587\u306e\u6700\u3082\u4e00\u822c\u7684\u306a\u4f7f\u7528\u4f8b\u306e1\u3064\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=\"\">\/\/ PDO\u3092\u4f7f\u7528\u3057\u305f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u51e6\u7406\u306e\u4f8b\ntry {\n    $pdo = new PDO(\"mysql:host=localhost;dbname=test\", \"user\", \"password\");\n    $stmt = $pdo-&gt;query(\"SELECT id, name, email FROM users\");\n    \n    \/\/ \u7d50\u679c\u306e\u6574\u5f62\u3068\u52a0\u5de5\n    $formattedUsers = [];\n    foreach ($stmt-&gt;fetchAll(PDO::FETCH_ASSOC) as $user) {\n        $formattedUsers[$user['id']] = [\n            'name' =&gt; htmlspecialchars($user['name']),\n            'email' =&gt; filter_var($user['email'], FILTER_VALIDATE_EMAIL)\n                ? $user['email'] : 'invalid email'\n        ];\n    }\n} catch (PDOException $e) {\n    error_log(\"\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a8\u30e9\u30fc: \" . $e-&gt;getMessage());\n}\n\n\/\/ \u30d0\u30c3\u30c1\u51e6\u7406\u3067\u306e\u6d3b\u7528\u4f8b\nfunction processBatch($users, $batchSize = 100) {\n    foreach (array_chunk($users, $batchSize) as $batch) {\n        $placeholders = str_repeat('(?,?,?),', count($batch) - 1) . '(?,?,?)';\n        $sql = \"INSERT INTO processed_users (id, name, status) VALUES \" . $placeholders;\n        \n        \/\/ \u30d0\u30c3\u30c1\u5358\u4f4d\u3067\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u51e6\u7406\n        try {\n            $pdo-&gt;beginTransaction();\n            \/\/ \u30d0\u30c3\u30c1\u51e6\u7406\u306e\u5b9f\u884c\n            $pdo-&gt;commit();\n        } catch (Exception $e) {\n            $pdo-&gt;rollBack();\n            error_log(\"\u30d0\u30c3\u30c1\u51e6\u7406\u30a8\u30e9\u30fc: \" . $e-&gt;getMessage());\n        }\n    }\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">JSON\u30c7\u30fc\u30bf\u306e\u64cd\u4f5c\u3068API\u8fd4\u5374\u5024\u306e\u51e6\u7406<\/h3>\n\n\n\n<p>API\u3068\u306e\u9023\u643a\u3084JSON\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u306b\u304a\u3044\u3066\u3001foreach\u6587\u306f\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ API\u5fdc\u7b54\u306e\u51e6\u7406\u4f8b\n$apiResponse = [\n    'status' =&gt; 'success',\n    'data' =&gt; [\n        ['id' =&gt; 1, 'status' =&gt; 'active'],\n        ['id' =&gt; 2, 'status' =&gt; 'pending']\n    ]\n];\n\n\/\/ \u30c7\u30fc\u30bf\u306e\u691c\u8a3c\u3068\u5909\u63db\n$processedData = [];\nforeach ($apiResponse['data'] as $item) {\n    \/\/ \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3068\u578b\u5909\u63db\n    $processedData[] = [\n        'id' =&gt; (int)$item['id'],\n        'status' =&gt; in_array($item['status'], ['active', 'pending']) \n            ? $item['status'] : 'unknown'\n    ];\n}\n\n\/\/ \u30cd\u30b9\u30c8\u3055\u308c\u305fJSON\u30c7\u30fc\u30bf\u306e\u518d\u5e30\u7684\u51e6\u7406\nfunction processNestedJson($data, $path = '') {\n    $result = [];\n    foreach ($data as $key =&gt; $value) {\n        $currentPath = $path ? \"$path.$key\" : $key;\n        if (is_array($value)) {\n            $result = array_merge(\n                $result, \n                processNestedJson($value, $currentPath)\n            );\n        } else {\n            $result[$currentPath] = $value;\n        }\n    }\n    return $result;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$nestedJson = [\n    'user' =&gt; [\n        'details' =&gt; [\n            'name' =&gt; 'John',\n            'age' =&gt; 30\n        ]\n    ]\n];\n$flattened = processNestedJson($nestedJson);\n\/\/ \u7d50\u679c: ['user.details.name' =&gt; 'John', 'user.details.age' =&gt; 30]\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3067\u306e\u6d3b\u7528\u4f8b\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p>\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u306b\u304a\u3044\u3066\u3082\u3001foreach\u6587\u306f\u52b9\u7387\u7684\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u3092\u53ef\u80fd\u306b\u3057\u307e\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=\"\">\/\/ \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306e\u30d5\u30a1\u30a4\u30eb\u51e6\u7406\nfunction processDirectory($dir, $extensions = ['php']) {\n    $files = new RecursiveIteratorIterator(\n        new RecursiveDirectoryIterator($dir)\n    );\n    \n    foreach ($files as $file) {\n        if ($file-&gt;isFile() &amp;&amp; \n            in_array($file-&gt;getExtension(), $extensions)) {\n            \/\/ \u30d5\u30a1\u30a4\u30eb\u306e\u51e6\u7406\n            processFile($file-&gt;getPathname());\n        }\n    }\n}\n\n\/\/ CSV\u30d5\u30a1\u30a4\u30eb\u306e\u52b9\u7387\u7684\u306a\u51e6\u7406\nfunction processLargeCsv($filename, $callback) {\n    $handle = fopen($filename, 'r');\n    $headers = fgetcsv($handle);\n    \n    while (($data = fgetcsv($handle)) !== false) {\n        $row = array_combine($headers, $data);\n        $callback($row);\n    }\n    \n    fclose($handle);\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nprocessLargeCsv('large_data.csv', function($row) {\n    \/\/ \u5404\u884c\u306e\u30c7\u30fc\u30bf\u51e6\u7406\n    processRow($row);\n});\n<\/pre>\n\n\n\n<p>\u5b9f\u88c5\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n<div id=\"id-69081915-7ed8-4d18-826e-e91919612a6a\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30b7\u30ca\u30ea\u30aa<\/th><th>\u63a8\u5968\u30a2\u30d7\u30ed\u30fc\u30c1<\/th><th>\u6ce8\u610f\u70b9<\/th><\/tr><\/thead><tbody><tr><td>DB\u51e6\u7406<\/td><td>\u30d0\u30c3\u30c1\u51e6\u7406\u306e\u6d3b\u7528<\/td><td>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u76e3\u8996<\/td><\/tr><tr><td>API\u51e6\u7406<\/td><td>\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u5b9f\u88c5<\/td><td>\u30ec\u30b9\u30dd\u30f3\u30b9\u5f62\u5f0f\u306e\u691c\u8a3c<\/td><\/tr><tr><td>\u30d5\u30a1\u30a4\u30eb\u51e6\u7406<\/td><td>\u30b9\u30c8\u30ea\u30fc\u30e0\u51e6\u7406\u306e\u5229\u7528<\/td><td>\u30ea\u30bd\u30fc\u30b9\u306e\u9069\u5207\u306a\u89e3\u653e<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3089\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u7406\u89e3\u3057\u9069\u5207\u306b\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u3067\u5805\u7262\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u958b\u767a\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-16\">foreach\u6587\u306e\u5236\u5fa1\u3068\u30d5\u30ed\u30fc\u7ba1\u7406<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u30d6\u30ec\u30a4\u30af\u6587\u3068\u7d99\u7d9a\u6587\u306e\u6b63\u3057\u3044\u4f7f\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p>foreach\u6587\u306e\u5b9f\u884c\u30d5\u30ed\u30fc\u3092\u5236\u5fa1\u3059\u308b\u305f\u3081\u306b\u3001<code>break<\/code>\u3068<code>continue<\/code>\u6587\u3092\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\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=\"\">\/\/ break\u6587\u306e\u57fa\u672c\u7684\u306a\u4f7f\u7528\u4f8b\n$numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];\nforeach ($numbers as $number) {\n    if ($number &gt; 5) {\n        break;  \/\/ 5\u3088\u308a\u5927\u304d\u3044\u6570\u5b57\u3067\u51e6\u7406\u3092\u7d42\u4e86\n    }\n    echo $number . \"\\n\";\n}\n\n\/\/ continue\u6587\u306e\u6d3b\u7528\u4f8b\n$users = [\n    ['name' =&gt; '\u5c71\u7530', 'active' =&gt; true],\n    ['name' =&gt; '\u9234\u6728', 'active' =&gt; false],\n    ['name' =&gt; '\u7530\u4e2d', 'active' =&gt; true]\n];\n\nforeach ($users as $user) {\n    if (!$user['active']) {\n        continue;  \/\/ \u975e\u30a2\u30af\u30c6\u30a3\u30d6\u30e6\u30fc\u30b6\u30fc\u3092\u30b9\u30ad\u30c3\u30d7\n    }\n    processActiveUser($user);\n}\n\n\/\/ break\/continue\u3068\u30e9\u30d9\u30eb\u306e\u7d44\u307f\u5408\u308f\u305b\nouter: foreach ($categories as $category) {\n    foreach ($category['items'] as $item) {\n        if ($item['stock'] &lt;= 0) {\n            break outer;  \/\/ \u5728\u5eab\u5207\u308c\u5546\u54c1\u304c\u3042\u3063\u305f\u5834\u5408\u3001\u5916\u5074\u306e\u30eb\u30fc\u30d7\u3082\u7d42\u4e86\n        }\n    }\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">\u30cd\u30b9\u30c8\u3057\u305f\u30eb\u30fc\u30d7\u306e\u5236\u5fa1\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u8907\u6570\u306e\u30eb\u30fc\u30d7\u3092\u30cd\u30b9\u30c8\u3059\u308b\u5834\u5408\u306e\u52b9\u7387\u7684\u306a\u5236\u5fa1\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u307e\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=\"\">\/\/ \u30d5\u30e9\u30b0\u3092\u4f7f\u7528\u3057\u305f\u5236\u5fa1\n$found = false;\nforeach ($departments as $department) {\n    foreach ($department['employees'] as $employee) {\n        if ($employee['id'] === $targetId) {\n            $found = true;\n            break 2;  \/\/ \u4e21\u65b9\u306e\u30eb\u30fc\u30d7\u3092\u629c\u3051\u308b\n        }\n    }\n}\n\n\/\/ \u65e9\u671f\u30ea\u30bf\u30fc\u30f3\u30d1\u30bf\u30fc\u30f3\nfunction findEmployee($departments, $targetId) {\n    foreach ($departments as $department) {\n        foreach ($department['employees'] as $employee) {\n            if ($employee['id'] === $targetId) {\n                return $employee;  \/\/ \u898b\u3064\u304b\u3063\u305f\u6642\u70b9\u3067\u8fd4\u3059\n            }\n        }\n    }\n    return null;  \/\/ \u898b\u3064\u304b\u3089\u306a\u304b\u3063\u305f\u5834\u5408\n}\n\n\/\/ \u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u305f\u5236\u5fa1\n$iterator = new RecursiveIteratorIterator(\n    new RecursiveArrayIterator($nestedArray),\n    RecursiveIteratorIterator::LEAVES_ONLY\n);\n\nforeach ($iterator as $key =&gt; $value) {\n    \/\/ \u6df1\u304f\u30cd\u30b9\u30c8\u3055\u308c\u305f\u914d\u5217\u8981\u7d20\u306b\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\n    processValue($value);\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-19\">\u4f8b\u5916\u51e6\u7406\u3068\u306e\u7d44\u307f\u5408\u308f\u305b<\/h3>\n\n\n\n<p>foreach\u6587\u3068\u4f8b\u5916\u51e6\u7406\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5805\u7262\u306a\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\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=\"\">\/\/ \u57fa\u672c\u7684\u306a\u4f8b\u5916\u51e6\u7406\u306e\u7d44\u307f\u5408\u308f\u305b\ntry {\n    foreach ($records as $record) {\n        try {\n            validateRecord($record);\n            processRecord($record);\n        } catch (ValidationException $e) {\n            \/\/ \u500b\u5225\u30ec\u30b3\u30fc\u30c9\u306e\u30a8\u30e9\u30fc\u3092\u8a18\u9332\u3057\u3066\u7d9a\u884c\n            logError($record, $e-&gt;getMessage());\n            continue;\n        }\n    }\n} catch (Exception $e) {\n    \/\/ \u81f4\u547d\u7684\u306a\u30a8\u30e9\u30fc\u306e\u51e6\u7406\n    handleFatalError($e);\n}\n\n\/\/ \u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u51e6\u7406\u3068\u306e\u7d44\u307f\u5408\u308f\u305b\ntry {\n    $pdo-&gt;beginTransaction();\n    \n    foreach ($orders as $order) {\n        try {\n            processOrder($order);\n        } catch (OrderException $e) {\n            \/\/ \u7279\u5b9a\u306e\u6ce8\u6587\u306e\u51e6\u7406\u306b\u5931\u6557\u3057\u305f\u5834\u5408\n            logOrderError($order, $e);\n            throw new BatchProcessException('\u6ce8\u6587\u51e6\u7406\u306b\u5931\u6557\u3057\u307e\u3057\u305f');\n        }\n    }\n    \n    $pdo-&gt;commit();\n} catch (BatchProcessException $e) {\n    $pdo-&gt;rollBack();\n    handleBatchError($e);\n}\n<\/pre>\n\n\n\n<p>\u30d5\u30ed\u30fc\u5236\u5fa1\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n<div id=\"id-e289cbfa-1f72-49d9-a54f-d8942f368396\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5236\u5fa1\u69cb\u9020<\/th><th>\u4f7f\u7528\u30b7\u30fc\u30f3<\/th><th>\u6ce8\u610f\u70b9<\/th><\/tr><\/thead><tbody><tr><td>break<\/td><td>\u6761\u4ef6\u9054\u6210\u6642\u306e\u65e9\u671f\u7d42\u4e86<\/td><td>\u30cd\u30b9\u30c8\u30ec\u30d9\u30eb\u306e\u6307\u5b9a\u306b\u6ce8\u610f<\/td><\/tr><tr><td>continue<\/td><td>\u7279\u5b9a\u6761\u4ef6\u306e\u30b9\u30ad\u30c3\u30d7<\/td><td>\u51e6\u7406\u306e\u6d41\u308c\u3092\u628a\u63e1\u3057\u3084\u3059\u304f<\/td><\/tr><tr><td>\u4f8b\u5916\u51e6\u7406<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f\u6642\u306e\u5236\u5fa1<\/td><td>\u9069\u5207\u306a\u7c92\u5ea6\u3067\u306e\u4f8b\u5916\u6355\u6349<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3089\u306e\u5236\u5fa1\u69cb\u9020\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u3067\u7ba1\u7406\u3057\u3084\u3059\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-20\">foreach\u6587\u3092\u4f7f\u7528\u3057\u305f\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u30ec\u30b7\u30d4\u96c6<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-21\">CSV\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u3068\u51e6\u7406\u306e\u5b9f\u88c5\u4f8b<\/h3>\n\n\n\n<p>CSV\u30d5\u30a1\u30a4\u30eb\u306e\u51e6\u7406\u306f\u696d\u52d9\u3067\u3088\u304f\u767a\u751f\u3059\u308b\u30bf\u30b9\u30af\u3067\u3059\u3002\u4ee5\u4e0b\u306b\u52b9\u7387\u7684\u306a\u51e6\u7406\u65b9\u6cd5\u3092\u793a\u3057\u307e\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=\"\">class CsvProcessor {\n    private $filename;\n    private $headers;\n    \n    public function __construct($filename) {\n        $this-&gt;filename = $filename;\n    }\n    \n    public function process(callable $rowCallback) {\n        $handle = fopen($this-&gt;filename, 'r');\n        \n        \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u306e\u51e6\u7406\n        $this-&gt;headers = fgetcsv($handle);\n        \n        \/\/ \u30c7\u30fc\u30bf\u884c\u306e\u51e6\u7406\n        while (($row = fgetcsv($handle)) !== false) {\n            $data = array_combine($this-&gt;headers, $row);\n            $rowCallback($data);\n        }\n        \n        fclose($handle);\n    }\n    \n    \/\/ \u5927\u898f\u6a21CSV\u306e\u52b9\u7387\u7684\u306a\u66f8\u304d\u51fa\u3057\n    public function exportProcessedData($outputFile, $data) {\n        $handle = fopen($outputFile, 'w');\n        \n        \/\/ \u30d8\u30c3\u30c0\u30fc\u306e\u66f8\u304d\u51fa\u3057\n        fputcsv($handle, $this-&gt;headers);\n        \n        \/\/ \u30c7\u30fc\u30bf\u306e\u66f8\u304d\u51fa\u3057\n        foreach ($data as $row) {\n            fputcsv($handle, array_values($row));\n        }\n        \n        fclose($handle);\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$processor = new CsvProcessor('input.csv');\n$processedData = [];\n\n$processor-&gt;process(function($row) use (&amp;$processedData) {\n    \/\/ \u30c7\u30fc\u30bf\u306e\u691c\u8a3c\u3068\u52a0\u5de5\n    if (validateRow($row)) {\n        $processedData[] = transformRow($row);\n    }\n});\n\n$processor-&gt;exportProcessedData('output.csv', $processedData);\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-22\">HTML\u30c6\u30fc\u30d6\u30eb\u306e\u52d5\u7684\u751f\u6210\u624b\u6cd5<\/h3>\n\n\n\n<p>\u30c7\u30fc\u30bf\u3092\u898b\u3084\u3059\u304f\u8868\u793a\u3059\u308b\u305f\u3081\u306eHTML\u30c6\u30fc\u30d6\u30eb\u751f\u6210\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\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=\"\">class TableGenerator {\n    private $data;\n    private $options;\n    \n    public function __construct(array $data, array $options = []) {\n        $this-&gt;data = $data;\n        $this-&gt;options = array_merge([\n            'class' =&gt; 'table',\n            'stripedRows' =&gt; true,\n            'responsive' =&gt; true\n        ], $options);\n    }\n    \n    public function render() {\n        $html = $this-&gt;generateTableOpen();\n        $html .= $this-&gt;generateHeader();\n        $html .= $this-&gt;generateBody();\n        $html .= '&lt;\/table&gt;';\n        \n        return $html;\n    }\n    \n    private function generateTableOpen() {\n        $class = $this-&gt;options['class'];\n        if ($this-&gt;options['responsive']) {\n            $class .= ' table-responsive';\n        }\n        return \"&lt;table class=\\\"{$class}\\\"&gt;\\n\";\n    }\n    \n    private function generateHeader() {\n        if (empty($this-&gt;data)) {\n            return '';\n        }\n        \n        $html = \"&lt;thead&gt;\\n&lt;tr&gt;\\n\";\n        foreach (array_keys(reset($this-&gt;data)) as $header) {\n            $html .= sprintf(\"&lt;th&gt;%s&lt;\/th&gt;\\n\", htmlspecialchars($header));\n        }\n        $html .= \"&lt;\/tr&gt;\\n&lt;\/thead&gt;\\n\";\n        \n        return $html;\n    }\n    \n    private function generateBody() {\n        $html = \"&lt;tbody&gt;\\n\";\n        foreach ($this-&gt;data as $i =&gt; $row) {\n            $class = $this-&gt;options['stripedRows'] &amp;&amp; $i % 2 \n                ? ' class=\"striped\"' \n                : '';\n            \n            $html .= \"&lt;tr{$class}&gt;\\n\";\n            foreach ($row as $cell) {\n                $html .= sprintf(\n                    \"&lt;td&gt;%s&lt;\/td&gt;\\n\",\n                    htmlspecialchars($cell)\n                );\n            }\n            $html .= \"&lt;\/tr&gt;\\n\";\n        }\n        $html .= \"&lt;\/tbody&gt;\\n\";\n        \n        return $html;\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$userData = [\n    ['id' =&gt; 1, 'name' =&gt; '\u5c71\u7530\u592a\u90ce', 'email' =&gt; 'yamada@example.com'],\n    ['id' =&gt; 2, 'name' =&gt; '\u9234\u6728\u82b1\u5b50', 'email' =&gt; 'suzuki@example.com']\n];\n\n$generator = new TableGenerator($userData, [\n    'class' =&gt; 'table table-bordered',\n    'stripedRows' =&gt; true\n]);\n\necho $generator-&gt;render();\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-23\">\u914d\u5217\u306e\u5927\u91cf\u30fb\u7d71\u8a08\u51e6\u7406\u306e\u5b9f\u88c5\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u306b\u5bfe\u3059\u308b\u7d71\u8a08\u51e6\u7406\u306e\u5b9f\u88c5\u4f8b\u3092\u793a\u3057\u307e\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=\"\">class DataAnalyzer {\n    private $data;\n    \n    public function __construct(array $data) {\n        $this-&gt;data = $data;\n    }\n    \n    \/\/ \u57fa\u672c\u7684\u306a\u7d71\u8a08\u60c5\u5831\u306e\u8a08\u7b97\n    public function calculateStatistics($key) {\n        $values = array_column($this-&gt;data, $key);\n        \n        return [\n            'count' =&gt; count($values),\n            'sum' =&gt; array_sum($values),\n            'average' =&gt; array_sum($values) \/ count($values),\n            'min' =&gt; min($values),\n            'max' =&gt; max($values)\n        ];\n    }\n    \n    \/\/ \u30b0\u30eb\u30fc\u30d7\u5316\u3068\u96c6\u8a08\n    public function groupAndAggregate($groupKey, $valueKey) {\n        $groups = [];\n        foreach ($this-&gt;data as $item) {\n            $groupValue = $item[$groupKey];\n            if (!isset($groups[$groupValue])) {\n                $groups[$groupValue] = [];\n            }\n            $groups[$groupValue][] = $item[$valueKey];\n        }\n        \n        $result = [];\n        foreach ($groups as $key =&gt; $values) {\n            $result[$key] = [\n                'count' =&gt; count($values),\n                'sum' =&gt; array_sum($values),\n                'average' =&gt; array_sum($values) \/ count($values)\n            ];\n        }\n        \n        return $result;\n    }\n    \n    \/\/ \u30d1\u30fc\u30bb\u30f3\u30bf\u30a4\u30eb\u306e\u8a08\u7b97\n    public function calculatePercentile($key, $percentile) {\n        $values = array_column($this-&gt;data, $key);\n        sort($values);\n        $index = ($percentile \/ 100) * (count($values) - 1);\n        \n        if (floor($index) == $index) {\n            return $values[$index];\n        }\n        \n        $lower = floor($index);\n        $upper = ceil($index);\n        $fraction = $index - $lower;\n        \n        return $values[$lower] + $fraction * ($values[$upper] - $values[$lower]);\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$salesData = [\n    ['product' =&gt; 'A', 'category' =&gt; 'electronics', 'sales' =&gt; 1000],\n    ['product' =&gt; 'B', 'category' =&gt; 'electronics', 'sales' =&gt; 1500],\n    ['product' =&gt; 'C', 'category' =&gt; 'books', 'sales' =&gt; 500]\n];\n\n$analyzer = new DataAnalyzer($salesData);\n\n\/\/ \u57fa\u672c\u7d71\u8a08\u306e\u8a08\u7b97\n$salesStats = $analyzer-&gt;calculateStatistics('sales');\n\n\/\/ \u30ab\u30c6\u30b4\u30ea\u30fc\u5225\u306e\u96c6\u8a08\n$categoryStats = $analyzer-&gt;groupAndAggregate('category', 'sales');\n\n\/\/ 75\u30d1\u30fc\u30bb\u30f3\u30bf\u30a4\u30eb\u306e\u58f2\u4e0a\u3092\u8a08\u7b97\n$percentile75 = $analyzer-&gt;calculatePercentile('sales', 75);\n<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u4f8b\u306f\u3001\u5b9f\u969b\u306e\u696d\u52d9\u3067\u3088\u304f\u767a\u751f\u3059\u308b\u51e6\u7406\u3092foreach\u6587\u3092\u4f7f\u3063\u3066\u52b9\u7387\u7684\u306b\u89e3\u6c7a\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u9069\u5207\u306a\u30af\u30e9\u30b9\u8a2d\u8a08\u3068\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u306e\u9ad8\u3044\u5805\u7262\u306a\u30b3\u30fc\u30c9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Warning: Undefined array key &#8220;is_admin&#8221; 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