{"id":3445,"date":"2025-03-24T08:46:10","date_gmt":"2025-03-23T23:46:10","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=3445"},"modified":"2025-03-24T08:46:40","modified_gmt":"2025-03-23T23:46:40","slug":"%e3%80%90%e4%bf%9d%e5%ad%98%e7%89%88%e3%80%91php-for%e3%83%ab%e3%83%bc%e3%83%97%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%ef%bc%9a%e5%88%9d%e5%bf%83%e8%80%85%e3%81%8b%e3%82%89%e4%b8%8a%e7%b4%9a","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=3445","title":{"rendered":"\u3010\u4fdd\u5b58\u7248\u3011PHP for\u30eb\u30fc\u30d7\u5b8c\u5168\u30ac\u30a4\u30c9\uff1a\u521d\u5fc3\u8005\u304b\u3089\u4e0a\u7d1a\u8005\u307e\u3067\u4f7f\u3044\u3053\u306a\u305b\u308b7\u3064\u306e\u5b9f\u8df5\u30c6\u30af\u30cb\u30c3\u30af"},"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\u306efor\u30eb\u30fc\u30d7\u3068\u306f\u4f55\u304b\uff1f\u57fa\u790e\u304b\u3089\u7406\u89e3\u3059\u308b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">PHP\u306b\u304a\u3051\u308bfor\u30eb\u30fc\u30d7\u306e\u57fa\u672c\u69cb\u6587\u3068\u52d5\u4f5c\u539f\u7406<\/a>      <\/li>      <li>        <a href=\"#i-2\">for\u30eb\u30fc\u30d7\u304c\u7279\u306b\u52b9\u679c\u7684\u306a\u72b6\u6cc1\u3068\u4f7f\u7528\u30b7\u30fc\u30f3<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-3\">while\u6587\u3084foreach\u6587\u3068\u306e\u9055\u3044\u3068\u4f7f\u3044\u5206\u3051\u306e\u30dd\u30a4\u30f3\u30c8<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-6\">PHP for\u30eb\u30fc\u30d7\u3092\u4f7f\u3044\u3053\u306a\u3059\u305f\u3081\u306e7\u3064\u306e\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-7\">\u30c6\u30af\u30cb\u30c3\u30af1\uff1a\u8907\u6570\u306e\u521d\u671f\u5316\u5f0f\u3068\u5897\u5206\u5f0f\u3092\u6d3b\u7528\u3059\u308b\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-8\">\u30c6\u30af\u30cb\u30c3\u30af2\uff1a\u30ab\u30a6\u30f3\u30bf\u5909\u6570\u3092\u52b9\u7387\u7684\u306b\u64cd\u4f5c\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li>        <a href=\"#i-9\">\u30c6\u30af\u30cb\u30c3\u30af3\uff1a\u30cd\u30b9\u30c8\u3057\u305ffor\u30eb\u30fc\u30d7\u3067\u591a\u6b21\u5143\u914d\u5217\u3092\u51e6\u7406\u3059\u308b<\/a>      <\/li>      <li>        <a href=\"#i-10\">\u30c6\u30af\u30cb\u30c3\u30af4\uff1a\u6761\u4ef6\u5f0f\u3092\u5de5\u592b\u3057\u3066\u7279\u5b9a\u306e\u8981\u7d20\u3060\u3051\u3092\u51e6\u7406\u3059\u308b<\/a>      <\/li>      <li>        <a href=\"#i-11\">\u30c6\u30af\u30cb\u30c3\u30af5\uff1abreak\u6587\u3068continue\u6587\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u5236\u5fa1<\/a>      <\/li>      <li>        <a href=\"#i-12\">\u30c6\u30af\u30cb\u30c3\u30af6\uff1afor\u30eb\u30fc\u30d7\u5185\u3067\u95a2\u6570\u3092\u6d3b\u7528\u3059\u308b\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-13\">\u30c6\u30af\u30cb\u30c3\u30af7\uff1a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u610f\u8b58\u3057\u305ffor\u30eb\u30fc\u30d7\u306e\u6700\u9069\u5316<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-14\">PHP for\u30eb\u30fc\u30d7\u306e\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u4f8b\u3068\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-15\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u305f\u7d50\u679c\u3092\u8868\u5f62\u5f0f\u3067\u8868\u793a\u3059\u308b\u5b9f\u88c5<\/a>      <\/li>      <li>        <a href=\"#i-16\">\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3067CSV\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u30b3\u30fc\u30c9\u4f8b<\/a>      <\/li>      <li>        <a href=\"#i-17\">\u753b\u50cf\u51e6\u7406\u3067\u30d0\u30c3\u30c1\u5909\u63db\u3092\u884c\u3046\u5b9f\u88c5\u4f8b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-18\">API\u304b\u3089\u306e\u30c7\u30fc\u30bf\u53d6\u5f97\u3068\u51e6\u7406\u3092\u884c\u3046\u30b3\u30fc\u30c9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-19\">PHP for\u30eb\u30fc\u30d7\u4f7f\u7528\u6642\u306e\u6ce8\u610f\u70b9\u3068\u843d\u3068\u3057\u7a74<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-20\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306b\u95a2\u3059\u308b\u6ce8\u610f\u4e8b\u9805\u3068\u5bfe\u7b56\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-21\">\u7121\u9650\u30eb\u30fc\u30d7\u3092\u907f\u3051\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>      <li>        <a href=\"#i-22\">\u914d\u5217\u64cd\u4f5c\u6642\u306b\u3088\u304f\u3042\u308b\u9593\u9055\u3044\u3068\u305d\u306e\u56de\u907f\u7b56<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-23\">PHP\u30d0\u30fc\u30b8\u30e7\u30f3\u9593\u306e\u4e92\u63db\u6027\u306b\u95a2\u3059\u308b\u6ce8\u610f\u70b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-24\">PHP for\u30eb\u30fc\u30d7\u3068\u30e2\u30c0\u30f3PHP\u306e\u95a2\u4fc2\u6027<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-25\">PHP 7\/8\u3067\u306e\u6700\u9069\u5316\u3068\u65b0\u6a5f\u80fd\u304cfor\u30eb\u30fc\u30d7\u306b\u4e0e\u3048\u308b\u5f71\u97ff<\/a>      <\/li>      <li>        <a href=\"#i-29\">\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3068for\u30eb\u30fc\u30d7\u306e\u4f7f\u3044\u5206\u3051<\/a>      <\/li>      <li>        <a href=\"#i-32\">Laravel\u306a\u3069\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u306e\u30eb\u30fc\u30d7\u51e6\u7406\u306e\u5b9f\u88c5\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-35\">\u5c06\u6765\u7684\u306aPHP\u8a00\u8a9e\u9032\u5316\u3068for\u30eb\u30fc\u30d7\u306e\u4f4d\u7f6e\u3065\u3051<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-39\">\u5b9f\u52d9\u3067\u4f7f\u3048\u308bPHP for\u30eb\u30fc\u30d7\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-40\">\u53ef\u8aad\u6027\u306e\u9ad8\u3044for\u30eb\u30fc\u30d7\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u305f\u3081\u306e\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u898f\u7d04<\/a>      <\/li>      <li>        <a href=\"#i-44\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c6\u30b9\u30c8\u3067\u5206\u304b\u3063\u305f\u6700\u3082\u52b9\u7387\u7684\u306a\u30eb\u30fc\u30d7\u306e\u66f8\u304d\u65b9<\/a>      <\/li>      <li>        <a href=\"#i-48\">\u30c7\u30d0\u30c3\u30b0\u304c\u3057\u3084\u3059\u3044for\u30eb\u30fc\u30d7\u306e\u69cb\u9020\u3068\u547d\u540d\u898f\u5247<\/a>      <\/li>      <li>        <a href=\"#i-52\">\u30c1\u30fc\u30e0\u958b\u767a\u306b\u304a\u3051\u308bfor\u30eb\u30fc\u30d7\u30b3\u30fc\u30c9\u306e\u30ec\u30d3\u30e5\u30fc\u30dd\u30a4\u30f3\u30c8<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-56\">\u5b9f\u969b\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u57fa\u3065\u304f\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-59\">\u307e\u3068\u3081\uff1aPHP for\u30eb\u30fc\u30d7\u3092\u4f7f\u3044\u3053\u306a\u3057\u3066\u52b9\u7387\u7684\u306a\u958b\u767a\u3092\u5b9f\u73fe\u3057\u3088\u3046<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-60\">\u5b66\u3093\u30607\u3064\u306e\u30c6\u30af\u30cb\u30c3\u30af\u306e\u632f\u308a\u8fd4\u308a\u3068\u5b9f\u8df5\u3078\u306e\u30b9\u30c6\u30c3\u30d7<\/a>      <\/li>      <li>        <a href=\"#i-61\">\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\uff1a\u3055\u3089\u306b\u9ad8\u5ea6\u306aPHP\u30eb\u30fc\u30d7\u51e6\u7406\u30c6\u30af\u30cb\u30c3\u30af\u3078<\/a>      <\/li>      <li>        <a href=\"#i-66\">\u53c2\u8003\u30ea\u30bd\u30fc\u30b9\u3068\u63a8\u5968\u5b66\u7fd2\u6559\u6750<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-71\">\u52b9\u7387\u7684\u306a\u958b\u767a\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u6700\u5f8c\u306e\u30a2\u30c9\u30d0\u30a4\u30b9<\/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\u306efor\u30eb\u30fc\u30d7\u3068\u306f\u4f55\u304b\uff1f\u57fa\u790e\u304b\u3089\u7406\u89e3\u3059\u308b<\/h2>\n\n\n\n<p>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3044\u3066\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u306f\u975e\u5e38\u306b\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3042\u308a\u3001PHP\u3067\u306ffor\u30eb\u30fc\u30d7\u306f\u305d\u306e\u4ee3\u8868\u7684\u306a\u5b9f\u88c5\u65b9\u6cd5\u306e\u4e00\u3064\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001PHP\u306efor\u30eb\u30fc\u30d7\u306e\u57fa\u672c\u304b\u3089\u5fdc\u7528\u307e\u3067\u5fb9\u5e95\u7684\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">PHP\u306b\u304a\u3051\u308bfor\u30eb\u30fc\u30d7\u306e\u57fa\u672c\u69cb\u6587\u3068\u52d5\u4f5c\u539f\u7406<\/h3>\n\n\n\n<p>for\u30eb\u30fc\u30d7\u306e\u57fa\u672c\u69cb\u6587\u306f\u4ee5\u4e0b\u306e\u3088\u3046\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=\"\">for (\u521d\u671f\u5316\u5f0f; \u6761\u4ef6\u5f0f; \u5897\u5206\u5f0f) {\n    \/\/ \u7e70\u308a\u8fd4\u3057\u5b9f\u884c\u3057\u305f\u3044\u51e6\u7406\n}\n<\/pre>\n\n\n\n<p>\u5404\u90e8\u5206\u306e\u5f79\u5272\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u521d\u671f\u5316\u5f0f<\/strong>: \u30eb\u30fc\u30d7\u304c\u59cb\u307e\u308b\u524d\u306b1\u56de\u3060\u3051\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u901a\u5e38\u306f\u30ab\u30a6\u30f3\u30bf\u5909\u6570\u306e\u521d\u671f\u5316\u306b\u4f7f\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u6761\u4ef6\u5f0f<\/strong>: \u5404\u7e70\u308a\u8fd4\u3057\u306e\u524d\u306b\u8a55\u4fa1\u3055\u308c\u3001\u7d50\u679c\u304c<code>true<\/code>\u306e\u9593\u306f\u30eb\u30fc\u30d7\u304c\u7d99\u7d9a\u3057\u307e\u3059\u3002<code>false<\/code>\u306b\u306a\u308b\u3068\u30eb\u30fc\u30d7\u306f\u7d42\u4e86\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u5897\u5206\u5f0f<\/strong>: \u5404\u7e70\u308a\u8fd4\u3057\u306e\u6700\u5f8c\u306b\u5b9f\u884c\u3055\u308c\u308b\u5f0f\u3067\u3059\u3002\u901a\u5e38\u306f\u30ab\u30a6\u30f3\u30bf\u5909\u6570\u306e\u5897\u6e1b\u306b\u4f7f\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u30011\u304b\u308910\u307e\u3067\u306e\u6570\u5024\u3092\u51fa\u529b\u3059\u308b\u7c21\u5358\u306a\u4f8b\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\nfor ($i = 1; $i &lt;= 10; $i++) {\n    echo $i . \" \"; \/\/ 1 2 3 4 5 6 7 8 9 10\n}\n?&gt;\n<\/pre>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306e\u52d5\u4f5c\u904e\u7a0b\u3092\u8a73\u3057\u304f\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6700\u521d\u306b <code>$i = 1<\/code> \u304c\u5b9f\u884c\u3055\u308c\u3001\u30ab\u30a6\u30f3\u30bf\u5909\u6570 <code>$i<\/code> \u304c1\u306b\u521d\u671f\u5316\u3055\u308c\u307e\u3059<\/li>\n\n\n\n<li>\u6761\u4ef6 <code>$i &lt;= 10<\/code> \u304c\u8a55\u4fa1\u3055\u308c\u3001true\u306a\u306e\u3067\u30eb\u30fc\u30d7\u672c\u4f53\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059<\/li>\n\n\n\n<li><code>echo $i . \" \";<\/code> \u304c\u5b9f\u884c\u3055\u308c\u3001\u73fe\u5728\u306e <code>$i<\/code> \u306e\u5024\uff081\uff09\u304c\u51fa\u529b\u3055\u308c\u307e\u3059<\/li>\n\n\n\n<li>\u5897\u5206\u5f0f <code>$i++<\/code> \u304c\u5b9f\u884c\u3055\u308c\u3001<code>$i<\/code> \u304c2\u306b\u306a\u308a\u307e\u3059<\/li>\n\n\n\n<li>\u518d\u3073\u6761\u4ef6 <code>$i &lt;= 10<\/code> \u304c\u8a55\u4fa1\u3055\u308c\u3001\u307e\u3060true\u306a\u306e\u30672\u56de\u76ee\u306e\u30eb\u30fc\u30d7\u306b\u5165\u308a\u307e\u3059<\/li>\n\n\n\n<li>\u3053\u306e\u904e\u7a0b\u304c <code>$i<\/code> \u304c11\u306b\u306a\u308a\u6761\u4ef6\u304cfalse\u306b\u306a\u308b\u307e\u3067\u7e70\u308a\u8fd4\u3055\u308c\u307e\u3059<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">for\u30eb\u30fc\u30d7\u304c\u7279\u306b\u52b9\u679c\u7684\u306a\u72b6\u6cc1\u3068\u4f7f\u7528\u30b7\u30fc\u30f3<\/h3>\n\n\n\n<p>for\u30eb\u30fc\u30d7\u306f\u7279\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u72b6\u6cc1\u3067\u52b9\u679c\u7684\u3067\u3059\uff1a<\/p>\n\n\n<div id=\"id-dc453679-a6f5-4846-a339-fa78d10a5eb9\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u4f7f\u7528\u30b7\u30fc\u30f3<\/th><th>\u8aac\u660e<\/th><th>\u4f8b<\/th><\/tr><\/thead><tbody><tr><td>\u65e2\u77e5\u306e\u56de\u6570\u306e\u7e70\u308a\u8fd4\u3057<\/td><td>\u7e70\u308a\u8fd4\u3057\u56de\u6570\u304c\u4e8b\u524d\u306b\u5206\u304b\u3063\u3066\u3044\u308b\u5834\u5408<\/td><td>\u30c6\u30fc\u30d6\u30eb\u306e\u884c\u309210\u56de\u751f\u6210\u3059\u308b<\/td><\/tr><tr><td>\u9023\u7d9a\u3057\u305f\u6570\u5024\u51e6\u7406<\/td><td>\u7b49\u5dee\u6570\u5217\u3084\u7279\u5b9a\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u6570\u5024\u3092\u51e6\u7406\u3059\u308b\u5834\u5408<\/td><td>1\u304b\u3089100\u307e\u3067\u306e\u5408\u8a08\u3092\u8a08\u7b97\u3059\u308b<\/td><\/tr><tr><td>\u914d\u5217\u306e\u6dfb\u5b57\u64cd\u4f5c<\/td><td>\u914d\u5217\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u3057\u305f\u3044\u5834\u5408<\/td><td>\u914d\u5217\u306e\u5076\u6570\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u307f\u51e6\u7406\u3059\u308b<\/td><\/tr><tr><td>\u591a\u6b21\u5143\u914d\u5217\u306e\u64cd\u4f5c<\/td><td>\u8907\u6570\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u540c\u6642\u306b\u5236\u5fa1\u3057\u305f\u3044\u5834\u5408<\/td><td>\u884c\u5217\u306e\u6f14\u7b97\u51e6\u7406\u3092\u884c\u3046<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\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\/\/ 1\u304b\u3089100\u307e\u3067\u306e\u5408\u8a08\u3092\u8a08\u7b97\n$sum = 0;\nfor ($i = 1; $i &lt;= 100; $i++) {\n    $sum += $i;\n}\necho \"\u5408\u8a08: $sum\"; \/\/ \u5408\u8a08: 5050\n\n\/\/ \u914d\u5217\u306e\u5076\u6570\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u8981\u7d20\u3060\u3051\u3092\u53d6\u5f97\n$array = [\"apple\", \"banana\", \"cherry\", \"date\", \"elderberry\"];\n$evenIndexItems = [];\nfor ($i = 0; $i &lt; count($array); $i += 2) {\n    $evenIndexItems[] = $array[$i];\n}\nprint_r($evenIndexItems); \/\/ Array ( [0] =&gt; apple [1] =&gt; cherry [2] =&gt; elderberry )\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-3\">while\u6587\u3084foreach\u6587\u3068\u306e\u9055\u3044\u3068\u4f7f\u3044\u5206\u3051\u306e\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<p>PHP\u3067\u306f\u4ed6\u306b\u3082<code>while<\/code>\u30eb\u30fc\u30d7\u3084<code>foreach<\/code>\u30eb\u30fc\u30d7\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u305d\u308c\u305e\u308c\u5f97\u610f\u306a\u5834\u9762\u304c\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-4\">for\u30eb\u30fc\u30d7\u3068while\u30eb\u30fc\u30d7\u306e\u6bd4\u8f03<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ for\u30eb\u30fc\u30d7\u306e\u5834\u5408\nfor ($i = 0; $i &lt; 5; $i++) {\n    echo $i;\n}\n\n\/\/ \u540c\u7b49\u306ewhile\u30eb\u30fc\u30d7\n$i = 0;\nwhile ($i &lt; 5) {\n    echo $i;\n    $i++;\n}\n<\/pre>\n\n\n\n<p><strong>for\u30eb\u30fc\u30d7\u306e\u30e1\u30ea\u30c3\u30c8<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u521d\u671f\u5316\u3001\u6761\u4ef6\u30c1\u30a7\u30c3\u30af\u3001\u5897\u5206\u51e6\u7406\u304c1\u884c\u306b\u307e\u3068\u307e\u3063\u3066\u3044\u308b\u305f\u3081\u3001\u30b3\u30fc\u30c9\u304c\u7c21\u6f54<\/li>\n\n\n\n<li>\u30eb\u30fc\u30d7\u5236\u5fa1\u306b\u95a2\u3059\u308b\u60c5\u5831\u3092\u4e00\u76ee\u3067\u78ba\u8a8d\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u30ab\u30a6\u30f3\u30bf\u5909\u6570\u306e\u30b9\u30b3\u30fc\u30d7\u3092\u30eb\u30fc\u30d7\u5185\u306b\u9650\u5b9a\u3067\u304d\u308b\uff08PHP 7.3\u4ee5\u964d\uff09<\/li>\n<\/ul>\n\n\n\n<p><strong>while\u30eb\u30fc\u30d7\u304c\u9069\u3057\u3066\u3044\u308b\u72b6\u6cc1<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7d42\u4e86\u6761\u4ef6\u304c\u30eb\u30fc\u30d7\u5185\u306e\u51e6\u7406\u306b\u4f9d\u5b58\u3059\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u7e70\u308a\u8fd4\u3057\u56de\u6570\u304c\u4e8b\u524d\u306b\u5206\u304b\u3089\u306a\u3044\u5834\u5408<\/li>\n\n\n\n<li>\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f\u306a\u3069\u3001EOF\u307e\u3067\u51e6\u7406\u3092\u7d9a\u3051\u308b\u5834\u5408<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-5\">for\u30eb\u30fc\u30d7\u3068foreach\u30eb\u30fc\u30d7\u306e\u6bd4\u8f03<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">$fruits = [\"apple\", \"banana\", \"cherry\"];\n\n\/\/ for\u30eb\u30fc\u30d7\u3067\u914d\u5217\u3092\u51e6\u7406\nfor ($i = 0; $i &lt; count($fruits); $i++) {\n    echo $fruits[$i] . \"\\n\";\n}\n\n\/\/ \u540c\u7b49\u306eforeach\u30eb\u30fc\u30d7\nforeach ($fruits as $fruit) {\n    echo $fruit . \"\\n\";\n}\n<\/pre>\n\n\n\n<p><strong>for\u30eb\u30fc\u30d7\u304c\u9069\u3057\u3066\u3044\u308b\u72b6\u6cc1<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u914d\u5217\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u5bfe\u3057\u3066\u64cd\u4f5c\u304c\u5fc5\u8981\u306a\u5834\u5408<\/li>\n\n\n\n<li>\u7279\u5b9a\u306e\u7bc4\u56f2\u3084\u9593\u9694\u3067\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u3044\u5834\u5408<\/li>\n\n\n\n<li>\u8907\u6570\u306e\u914d\u5217\u3092\u540c\u6642\u306b\u51e6\u7406\u3057\u305f\u3044\u5834\u5408<\/li>\n<\/ul>\n\n\n\n<p><strong>foreach\u30eb\u30fc\u30d7\u304c\u9069\u3057\u3066\u3044\u308b\u72b6\u6cc1<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u914d\u5217\u306e\u5168\u8981\u7d20\u306b\u5bfe\u3057\u3066\u540c\u3058\u51e6\u7406\u3092\u884c\u3044\u305f\u3044\u5834\u5408<\/li>\n\n\n\n<li>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u4f9d\u5b58\u3057\u306a\u3044\u51e6\u7406<\/li>\n\n\n\n<li>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u8d70\u67fb\u3059\u308b\u5834\u5408<\/li>\n<\/ul>\n\n\n\n<p>\u9069\u5207\u306a\u30eb\u30fc\u30d7\u3092\u9078\u3076\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3084\u4fdd\u5b88\u6027\u304c\u5927\u304d\u304f\u5411\u4e0a\u3057\u307e\u3059\u3002\u57fa\u672c\u7684\u306a\u6307\u91dd\u3068\u3057\u3066\u306f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u56de\u6570\u304c\u660e\u78ba\u3067\u5236\u5fa1\u304c\u5fc5\u8981<\/strong>: for\u30eb\u30fc\u30d7<\/li>\n\n\n\n<li><strong>\u6761\u4ef6\u304c\u52d5\u7684\u306b\u5909\u308f\u308b<\/strong>: while\u30eb\u30fc\u30d7<\/li>\n\n\n\n<li><strong>\u914d\u5217\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5168\u8981\u7d20\u51e6\u7406<\/strong>: foreach\u30eb\u30fc\u30d7<\/li>\n<\/ul>\n\n\n\n<p>\u521d\u5fc3\u8005\u306e\u65b9\u306f\u3001\u3053\u308c\u3089\u306e\u4f7f\u3044\u5206\u3051\u3092\u610f\u8b58\u3057\u3066\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-6\">PHP for\u30eb\u30fc\u30d7\u3092\u4f7f\u3044\u3053\u306a\u3059\u305f\u3081\u306e7\u3064\u306e\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<p>PHP\u306efor\u30eb\u30fc\u30d7\u306f\u3001\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3092\u899a\u3048\u308b\u3060\u3051\u3067\u3082\u5341\u5206\u306b\u5f79\u7acb\u3061\u307e\u3059\u304c\u3001\u3055\u3089\u306b\u8e0f\u307f\u8fbc\u3093\u3060\u30c6\u30af\u30cb\u30c3\u30af\u3092\u8eab\u306b\u3064\u3051\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u3067\u67d4\u8edf\u306a\u30b3\u30fc\u30c9\u304c\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u5b9f\u52d9\u3067\u5f79\u7acb\u30647\u3064\u306e\u5b9f\u8df5\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">\u30c6\u30af\u30cb\u30c3\u30af1\uff1a\u8907\u6570\u306e\u521d\u671f\u5316\u5f0f\u3068\u5897\u5206\u5f0f\u3092\u6d3b\u7528\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>for\u30eb\u30fc\u30d7\u306e\u521d\u671f\u5316\u5f0f\u3068\u5897\u5206\u5f0f\u3067\u306f\u3001\u30ab\u30f3\u30de\uff08,\uff09\u3092\u4f7f\u3063\u3066\u8907\u6570\u306e\u5909\u6570\u3092\u540c\u6642\u306b\u5236\u5fa1\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u95a2\u9023\u3059\u308b\u8907\u6570\u306e\u5024\u3092\u540c\u6642\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=\"\">&lt;?php\n\/\/ \u8907\u6570\u306e\u5909\u6570\u3092\u540c\u6642\u306b\u521d\u671f\u5316\u30fb\u5897\u5206\nfor ($i = 0, $j = 10; $i &lt; 10; $i++, $j--) {\n    echo \"i: $i, j: $j&lt;br&gt;\"; \/\/ i\u306f\u5897\u52a0\u3001j\u306f\u6e1b\u5c11\n}\n\/\/ \u51fa\u529b\u4f8b:\n\/\/ i: 0, j: 10\n\/\/ i: 1, j: 9\n\/\/ ...\n\/\/ i: 9, j: 1\n?&gt;\n<\/pre>\n\n\n\n<p>\u3053\u306e\u30c6\u30af\u30cb\u30c3\u30af\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b1\u30fc\u30b9\u3067\u7279\u306b\u5f79\u7acb\u3061\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e8c\u3064\u306e\u914d\u5217\u3092\u540c\u6642\u306b\u51e6\u7406\u3059\u308b<\/li>\n\n\n\n<li>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3068\u5024\u3092\u53cd\u5bfe\u65b9\u5411\u306b\u52d5\u304b\u3059<\/li>\n\n\n\n<li>\u8907\u6570\u306e\u30ab\u30a6\u30f3\u30bf\u3092\u7570\u306a\u308b\u30da\u30fc\u30b9\u3067\u9032\u3081\u308b<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">\u30c6\u30af\u30cb\u30c3\u30af2\uff1a\u30ab\u30a6\u30f3\u30bf\u5909\u6570\u3092\u52b9\u7387\u7684\u306b\u64cd\u4f5c\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u30ab\u30a6\u30f3\u30bf\u5909\u6570\u306e\u64cd\u4f5c\u65b9\u6cd5\u3092\u5de5\u592b\u3059\u308b\u3053\u3068\u3067\u3001\u7279\u5b9a\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u306e\u7e70\u308a\u8fd4\u3057\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ 2\u305a\u3064\u5897\u52a0\uff08\u5076\u6570\u306e\u307f\u51e6\u7406\uff09\nfor ($i = 0; $i &lt;= 10; $i += 2) {\n    echo \"$i \"; \/\/ 0 2 4 6 8 10\n}\n\n\/\/ 3\u306e\u500d\u6570\u306e\u307f\u51e6\u7406\nfor ($i = 3; $i &lt;= 30; $i += 3) {\n    echo \"$i \"; \/\/ 3 6 9 12 15 18 21 24 27 30\n}\n\n\/\/ \u6307\u6570\u95a2\u6570\u7684\u306b\u5897\u52a0\uff082\u306e\u7d2f\u4e57\uff09\nfor ($i = 1; $i &lt;= 100; $i *= 2) {\n    echo \"$i \"; \/\/ 1 2 4 8 16 32 64\n}\n\n\/\/ \u9006\u9806\u51e6\u7406\nfor ($i = 10; $i &gt;= 1; $i--) {\n    echo \"$i \"; \/\/ 10 9 8 7 6 5 4 3 2 1\n}\n?&gt;\n<\/pre>\n\n\n\n<p>\u3053\u306e\u30c6\u30af\u30cb\u30c3\u30af\u306f\u6570\u5b66\u7684\u306a\u30d1\u30bf\u30fc\u30f3\u3084\u7279\u5b9a\u306e\u6761\u4ef6\u306b\u57fa\u3065\u304f\u51e6\u7406\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002\u4f8b\u3048\u3070\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7d20\u6570\u306e\u5224\u5b9a<\/li>\n\n\n\n<li>\u7279\u5b9a\u306e\u30b9\u30c6\u30c3\u30d7\u5024\u3067\u306e\u53cd\u5fa9<\/li>\n\n\n\n<li>\u30d5\u30a3\u30dc\u30ca\u30c3\u30c1\u6570\u5217\u306e\u751f\u6210<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u30c6\u30af\u30cb\u30c3\u30af3\uff1a\u30cd\u30b9\u30c8\u3057\u305ffor\u30eb\u30fc\u30d7\u3067\u591a\u6b21\u5143\u914d\u5217\u3092\u51e6\u7406\u3059\u308b<\/h3>\n\n\n\n<p>for\u30eb\u30fc\u30d7\u3092\u30cd\u30b9\u30c8\uff08\u5165\u308c\u5b50\uff09\u306b\u3059\u308b\u3053\u3068\u3067\u3001\u591a\u6b21\u5143\u914d\u5217\u3084\u884c\u5217\u306e\u3088\u3046\u306a\u69cb\u9020\u3092\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=\"\">&lt;?php\n\/\/ 3x3\u306e\u884c\u5217\u3092\u751f\u6210\u3057\u3066\u8868\u793a\n$matrix = [];\nfor ($i = 0; $i &lt; 3; $i++) {\n    for ($j = 0; $j &lt; 3; $j++) {\n        $matrix[$i][$j] = $i * 3 + $j + 1; \/\/ 1\u304b\u30899\u307e\u3067\u306e\u5024\u3092\u683c\u7d0d\n    }\n}\n\n\/\/ HTML\u30c6\u30fc\u30d6\u30eb\u3067\u8868\u793a\necho \"&lt;table border='1'&gt;\";\nfor ($i = 0; $i &lt; 3; $i++) {\n    echo \"&lt;tr&gt;\";\n    for ($j = 0; $j &lt; 3; $j++) {\n        echo \"&lt;td&gt;\" . $matrix[$i][$j] . \"&lt;\/td&gt;\";\n    }\n    echo \"&lt;\/tr&gt;\";\n}\necho \"&lt;\/table&gt;\";\n\/\/ \u51fa\u529b:\n\/\/ | 1 | 2 | 3 |\n\/\/ | 4 | 5 | 6 |\n\/\/ | 7 | 8 | 9 |\n?&gt;\n<\/pre>\n\n\n\n<p>\u30cd\u30b9\u30c8\u3057\u305ffor\u30eb\u30fc\u30d7\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b1\u30fc\u30b9\u3067\u6d3b\u7528\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u884c\u5217\u6f14\u7b97<\/li>\n\n\n\n<li>\u753b\u50cf\u51e6\u7406\uff08\u30d4\u30af\u30bb\u30eb\u5358\u4f4d\u306e\u64cd\u4f5c\uff09<\/li>\n\n\n\n<li>\u30b0\u30ea\u30c3\u30c9\u30d9\u30fc\u30b9\u306e\u30c7\u30fc\u30bf\u751f\u6210<\/li>\n\n\n\n<li>\u5168\u3066\u306e\u53ef\u80fd\u306a\u7d44\u307f\u5408\u308f\u305b\u306e\u751f\u6210<\/li>\n<\/ul>\n\n\n\n<p>\u305f\u3060\u3057\u3001\u30cd\u30b9\u30c8\u304c\u6df1\u304f\u306a\u308a\u3059\u304e\u308b\u3068\u53ef\u8aad\u6027\u304c\u4f4e\u4e0b\u3057\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3082\u4f4e\u4e0b\u3059\u308b\u305f\u3081\u30013\u5c64\u4ee5\u4e0a\u306e\u30cd\u30b9\u30c8\u306f\u907f\u3051\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">\u30c6\u30af\u30cb\u30c3\u30af4\uff1a\u6761\u4ef6\u5f0f\u3092\u5de5\u592b\u3057\u3066\u7279\u5b9a\u306e\u8981\u7d20\u3060\u3051\u3092\u51e6\u7406\u3059\u308b<\/h3>\n\n\n\n<p>for\u30eb\u30fc\u30d7\u306e\u6761\u4ef6\u5f0f\u3092\u5de5\u592b\u3059\u308b\u3053\u3068\u3067\u3001\u7279\u5b9a\u306e\u30d1\u30bf\u30fc\u30f3\u306b\u4e00\u81f4\u3059\u308b\u8981\u7d20\u3060\u3051\u3092\u51e6\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n$numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];\n\n\/\/ \u6761\u4ef6\u5f0f\u30673\u306e\u500d\u6570\u3060\u3051\u3092\u51e6\u7406\necho \"3\u306e\u500d\u6570: \";\nfor ($i = 0; $i &lt; count($numbers); $i++) {\n    \/\/ \u6761\u4ef6\u5f0f\u3092\u8ffd\u52a0\u3057\u3066\u7279\u5b9a\u306e\u8981\u7d20\u3060\u3051\u3092\u51e6\u7406\n    if ($numbers[$i] % 3 == 0) {\n        echo $numbers[$i] . \" \"; \/\/ 3 6 9\n    }\n}\n\n\/\/ \u7d20\u6570\u3060\u3051\u3092\u51e6\u7406\u3059\u308b\u4f8b\necho \"&lt;br&gt;\u7d20\u6570: \";\nfor ($i = 0; $i &lt; count($numbers); $i++) {\n    $isPrime = true;\n    \/\/ \u7d20\u6570\u5224\u5b9a\uff081\u306f\u7d20\u6570\u3067\u306f\u306a\u3044\uff09\n    if ($numbers[$i] == 1) {\n        $isPrime = false;\n    }\n    \/\/ 2\u304b\u3089\u6570\u5024\u306e\u5e73\u65b9\u6839\u307e\u3067\u3067\u5272\u308a\u5207\u308c\u308b\u304b\u30c1\u30a7\u30c3\u30af\n    for ($j = 2; $j &lt;= sqrt($numbers[$i]); $j++) {\n        if ($numbers[$i] % $j == 0) {\n            $isPrime = false;\n            break;\n        }\n    }\n    if ($isPrime) {\n        echo $numbers[$i] . \" \"; \/\/ 2 3 5 7\n    }\n}\n?&gt;\n<\/pre>\n\n\n\n<p>\u3053\u306e\u30c6\u30af\u30cb\u30c3\u30af\u306f\u3001\u30c7\u30fc\u30bf\u306e\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3084\u6761\u4ef6\u4ed8\u304d\u51e6\u7406\u306b\u9069\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7279\u5b9a\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3059\u8981\u7d20\u306e\u62bd\u51fa<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u306e\u691c\u8a3c\u3084\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3<\/li>\n\n\n\n<li>\u7279\u6b8a\u306a\u30d1\u30bf\u30fc\u30f3\u306e\u691c\u51fa<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u30c6\u30af\u30cb\u30c3\u30af5\uff1abreak\u6587\u3068continue\u6587\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u5236\u5fa1<\/h3>\n\n\n\n<p><code>break<\/code>\u6587\u3068<code>continue<\/code>\u6587\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u30eb\u30fc\u30d7\u306e\u5b9f\u884c\u30d5\u30ed\u30fc\u3092\u7d30\u304b\u304f\u5236\u5fa1\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>break<\/strong>: \u30eb\u30fc\u30d7\u3092\u5373\u5ea7\u306b\u7d42\u4e86\u3055\u305b\u308b<\/li>\n\n\n\n<li><strong>continue<\/strong>: \u73fe\u5728\u306e\u7e70\u308a\u8fd4\u3057\u3092\u30b9\u30ad\u30c3\u30d7\u3057\u3066\u6b21\u306e\u7e70\u308a\u8fd4\u3057\u306b\u9032\u3080<\/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$numbers = [1, 4, 7, 2, 8, 3, 9, 5, 6];\n\n\/\/ break\u3092\u4f7f\u3063\u3066\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u6700\u521d\u306e\u8981\u7d20\u3092\u898b\u3064\u3051\u308b\necho \"\u6700\u521d\u306e5\u3088\u308a\u5927\u304d\u3044\u5024: \";\nfor ($i = 0; $i &lt; count($numbers); $i++) {\n    if ($numbers[$i] &gt; 5) {\n        echo $numbers[$i]; \/\/ 7\n        break; \/\/ \u898b\u3064\u304b\u3063\u305f\u3089\u5373\u7d42\u4e86\n    }\n}\n\necho \"&lt;br&gt;\u5947\u6570\u306e\u307f\u8868\u793a: \";\n\/\/ continue\u3092\u4f7f\u3063\u3066\u5076\u6570\u3092\u30b9\u30ad\u30c3\u30d7\nfor ($i = 0; $i &lt; count($numbers); $i++) {\n    if ($numbers[$i] % 2 == 0) {\n        continue; \/\/ \u5076\u6570\u306e\u5834\u5408\u306f\u6b21\u306e\u30eb\u30fc\u30d7\u3078\n    }\n    echo $numbers[$i] . \" \"; \/\/ 1 7 3 9 5\n}\n\n\/\/ \u8907\u96d1\u306a\u6761\u4ef6\u3067\u306e\u4f7f\u7528\u4f8b\uff1a10\u4ee5\u4e0a\u306e\u5024\u304c\u3042\u308b\u5834\u5408\u306f\u51e6\u7406\u4e2d\u65ad\necho \"&lt;br&gt;10\u672a\u6e80\u306e\u5024\uff0810\u4ee5\u4e0a\u304c\u898b\u3064\u304b\u3063\u305f\u3089\u7d42\u4e86\uff09: \";\nfor ($i = 0; $i &lt; count($numbers); $i++) {\n    if ($numbers[$i] &gt;= 10) {\n        echo \"10\u4ee5\u4e0a\u306e\u5024\u304c\u898b\u3064\u304b\u308a\u307e\u3057\u305f\u3002\u51e6\u7406\u3092\u4e2d\u65ad\u3057\u307e\u3059\u3002\";\n        break;\n    }\n    echo $numbers[$i] . \" \"; \/\/ \u5168\u3066\u306e\u5024\u3092\u8868\u793a\uff08\u5168\u306610\u672a\u6e80\uff09\n}\n?&gt;\n<\/pre>\n\n\n\n<p>\u3053\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e0d\u8981\u306a\u7e70\u308a\u8fd4\u3057\u3092\u7701\u7565\u3057\u3066\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a<\/li>\n\n\n\n<li>\u65e9\u671f\u7d42\u4e86\u6761\u4ef6\u306b\u3088\u308b\u30eb\u30fc\u30d7\u306e\u6700\u9069\u5316<\/li>\n\n\n\n<li>\u4f8b\u5916\u7684\u306a\u30b1\u30fc\u30b9\u306e\u52b9\u7387\u7684\u306a\u51e6\u7406<\/li>\n<\/ul>\n\n\n\n<p>\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u30c6\u30af\u30cb\u30c3\u30af6\uff1afor\u30eb\u30fc\u30d7\u5185\u3067\u95a2\u6570\u3092\u6d3b\u7528\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>for\u30eb\u30fc\u30d7\u5185\u3067\u95a2\u6570\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u51e6\u7406\u3092\u30e2\u30b8\u30e5\u30fc\u30eb\u5316\u3057\u3001\u53ef\u8aad\u6027\u3068\u518d\u5229\u7528\u6027\u3092\u9ad8\u3081\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=\"\">&lt;?php\n\/\/ \u914d\u5217\u306e\u5404\u8981\u7d20\u3092\u52a0\u5de5\u3059\u308b\u95a2\u6570\nfunction processValue($value) {\n    return $value * 2 + 1;\n}\n\n$numbers = [1, 2, 3, 4, 5];\n$results = [];\n\n\/\/ \u95a2\u6570\u3092\u6d3b\u7528\u3057\u3066\u5404\u8981\u7d20\u3092\u51e6\u7406\nfor ($i = 0; $i &lt; count($numbers); $i++) {\n    $results[] = processValue($numbers[$i]);\n}\nprint_r($results); \/\/ Array ( [0] =&gt; 3 [1] =&gt; 5 [2] =&gt; 7 [3] =&gt; 9 [4] =&gt; 11 )\n\n\/\/ \u7121\u540d\u95a2\u6570\uff08\u30af\u30ed\u30fc\u30b8\u30e3\uff09\u3092\u4f7f\u3063\u305f\u4f8b\n$multiply = function($value, $multiplier) {\n    return $value * $multiplier;\n};\n\n$multiplier = 3;\n$multipliedValues = [];\nfor ($i = 0; $i &lt; count($numbers); $i++) {\n    $multipliedValues[] = $multiply($numbers[$i], $multiplier);\n}\nprint_r($multipliedValues); \/\/ Array ( [0] =&gt; 3 [1] =&gt; 6 [2] =&gt; 9 [3] =&gt; 12 [4] =&gt; 15 )\n?&gt;\n<\/pre>\n\n\n\n<p>\u3053\u306e\u30c6\u30af\u30cb\u30c3\u30af\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u72b6\u6cc1\u3067\u7279\u306b\u52b9\u679c\u7684\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8907\u96d1\u306a\u51e6\u7406\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u5316<\/li>\n\n\n\n<li>\u540c\u3058\u51e6\u7406\u3092\u8907\u6570\u306e\u30eb\u30fc\u30d7\u3067\u518d\u5229\u7528<\/li>\n\n\n\n<li>\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u3068\u5236\u5fa1\u69cb\u9020\u306e\u5206\u96e2<\/li>\n<\/ul>\n\n\n\n<p>PHP 5.3\u4ee5\u964d\u3067\u306f\u3001for\u30eb\u30fc\u30d7\u5185\u3067\u7121\u540d\u95a2\u6570\uff08\u30af\u30ed\u30fc\u30b8\u30e3\uff09\u3092\u4f7f\u3046\u3053\u3068\u3082\u53ef\u80fd\u3067\u3001\u3053\u308c\u306b\u3088\u308a\u3055\u3089\u306b\u67d4\u8edf\u306a\u30b3\u30fc\u30c9\u304c\u66f8\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u30c6\u30af\u30cb\u30c3\u30af7\uff1a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u610f\u8b58\u3057\u305ffor\u30eb\u30fc\u30d7\u306e\u6700\u9069\u5316<\/h3>\n\n\n\n<p>for\u30eb\u30fc\u30d7\u306f\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u69cb\u9020\u3067\u3042\u308b\u305f\u3081\u3001\u6700\u9069\u5316\u306b\u3088\u3063\u3066\u5168\u4f53\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5927\u304d\u304f\u5411\u4e0a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\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=\"\">&lt;?php\n$largeArray = range(0, 9999); \/\/ 0\u304b\u30899999\u307e\u3067\u306e\u914d\u5217\n\n\/\/ \u975e\u52b9\u7387\u306a\u66f8\u304d\u65b9\n$startTime = microtime(true);\n$sum = 0;\nfor ($i = 0; $i &lt; count($largeArray); $i++) { \/\/ \u6bce\u56decount()\u304c\u5b9f\u884c\u3055\u308c\u308b\n    $sum += $largeArray[$i];\n}\n$endTime = microtime(true);\necho \"\u975e\u52b9\u7387\u306a\u65b9\u6cd5\u3067\u306e\u5b9f\u884c\u6642\u9593: \" . ($endTime - $startTime) . \"\u79d2&lt;br&gt;\";\n\n\/\/ \u6700\u9069\u5316\u3057\u305f\u66f8\u304d\u65b9\n$startTime = microtime(true);\n$sum = 0;\n$length = count($largeArray); \/\/ count()\u3092\u4e00\u5ea6\u3060\u3051\u5b9f\u884c\nfor ($i = 0; $i &lt; $length; $i++) {\n    $sum += $largeArray[$i];\n}\n$endTime = microtime(true);\necho \"\u6700\u9069\u5316\u3057\u305f\u65b9\u6cd5\u3067\u306e\u5b9f\u884c\u6642\u9593: \" . ($endTime - $startTime) . \"\u79d2&lt;br&gt;\";\n\n\/\/ \u3055\u3089\u306b\u6700\u9069\u5316\uff08\u53c2\u7167\u6e21\u3057\u3092\u5229\u7528\uff09\n$startTime = microtime(true);\n$sum = 0;\n$length = count($largeArray);\nfor ($i = 0; $i &lt; $length; $i++) {\n    $sum += &amp;$largeArray[$i]; \/\/ \u53c2\u7167\u3092\u4f7f\u3063\u3066\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u524a\u6e1b\n}\n$endTime = microtime(true);\necho \"\u53c2\u7167\u3092\u5229\u7528\u3057\u305f\u65b9\u6cd5\u3067\u306e\u5b9f\u884c\u6642\u9593: \" . ($endTime - $startTime) . \"\u79d2&lt;br&gt;\";\n?&gt;\n<\/pre>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30eb\u30fc\u30d7\u5185\u3067\u306ecount()\u95a2\u6570\u306e\u56de\u907f<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30eb\u30fc\u30d7\u306e\u6761\u4ef6\u5f0f\u3067<code>count()<\/code>\u3092\u76f4\u63a5\u4f7f\u7528\u3059\u308b\u3068\u3001\u53cd\u5fa9\u306e\u305f\u3073\u306b\u5b9f\u884c\u3055\u308c\u308b<\/li>\n\n\n\n<li>\u4ee3\u308f\u308a\u306b\u4e8b\u524d\u306b\u5909\u6570\u306b\u683c\u7d0d\u3057\u3066\u4f7f\u7528\u3059\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u53c2\u7167\u6e21\u3057\u306e\u6d3b\u7528<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5927\u304d\u306a\u914d\u5217\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u3001\u53c2\u7167\u3092\u4f7f\u3046\u3068\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u524a\u6e1b\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u305f\u3060\u3057\u3001\u526f\u4f5c\u7528\u3092\u7406\u89e3\u3057\u305f\u4e0a\u3067\u4f7f\u7528\u3059\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u9069\u5207\u306a\u30c7\u30fc\u30bf\u578b\u306e\u9078\u629e<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u6574\u6570\u30ab\u30a6\u30f3\u30bf\u306e\u5834\u5408\u3001\u578b\u3092\u660e\u793a\u3059\u308b\u3053\u3068\u3067\u308f\u305a\u304b\u306a\u304c\u3089\u9ad8\u901f\u5316\u3067\u304d\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30eb\u30fc\u30d7\u5185\u3067\u306e\u914d\u5217\u64cd\u4f5c\u306e\u6700\u5c0f\u5316<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u53ef\u80fd\u3067\u3042\u308c\u3070\u914d\u5217\u306e\u8ffd\u52a0\u30fb\u524a\u9664\u3092\u30eb\u30fc\u30d7\u306e\u5916\u3067\u884c\u3046<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u8907\u96d1\u306a\u8a08\u7b97\u306e\u4e8b\u524d\u51e6\u7406<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30eb\u30fc\u30d7\u5185\u3067\u540c\u3058\u8a08\u7b97\u3092\u7e70\u308a\u8fd4\u3055\u306a\u3044<\/li>\n\n\n\n<li>\u7d50\u679c\u3092\u5909\u6570\u306b\u683c\u7d0d\u3057\u3066\u518d\u5229\u7528\u3059\u308b<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001PHP\u306efor\u30eb\u30fc\u30d7\u3092\u6700\u5927\u9650\u306b\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002\u7279\u306b\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u3046\u3057\u305f\u6700\u9069\u5316\u304c\u5927\u304d\u306a\u5dee\u3092\u751f\u307f\u51fa\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-14\">PHP for\u30eb\u30fc\u30d7\u306e\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u4f8b\u3068\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/h2>\n\n\n\n<p>\u3053\u3053\u3067\u306f\u3001\u5b9f\u52d9\u3067\u3088\u304f\u906d\u9047\u3059\u308b\u72b6\u6cc1\u3067\u306ePHP for\u30eb\u30fc\u30d7\u306e\u4f7f\u3044\u65b9\u3092\u5177\u4f53\u7684\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3068\u5171\u306b\u7d39\u4ecb\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b3\u30fc\u30c9\u306f\u305d\u306e\u307e\u307e\u5b9f\u884c\u3067\u304d\u308b\u5f62\u3067\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u81ea\u5206\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u5408\u308f\u305b\u3066\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u305f\u7d50\u679c\u3092\u8868\u5f62\u5f0f\u3067\u8868\u793a\u3059\u308b\u5b9f\u88c5<\/h3>\n\n\n\n<p>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u305f\u60c5\u5831\u3092\u6574\u5f62\u3057\u3066\u8868\u793a\u3059\u308b\u306e\u306f\u3001Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3067\u3088\u304f\u3042\u308b\u51e6\u7406\u3067\u3059\u3002\u3053\u3053\u3067\u306fPDO\u3092\u4f7f\u3063\u3066\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u305f\u7d50\u679c\u3092HTML\u8868\u5f62\u5f0f\u3067\u8868\u793a\u3059\u308b\u4f8b\u3092\u7d39\u4ecb\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=\"\">&lt;?php\n\/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u60c5\u5831\n$host = 'localhost';\n$dbname = 'test_database';\n$username = 'root';\n$password = 'password';\n\ntry {\n    \/\/ PDO\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\uff08\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\uff09\n    $pdo = new PDO(\"mysql:host=$host;dbname=$dbname;charset=utf8\", $username, $password);\n    \n    \/\/ \u30a8\u30e9\u30fc\u30e2\u30fc\u30c9\u3092\u4f8b\u5916\u306b\u8a2d\u5b9a\n    $pdo-&gt;setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);\n    \n    \/\/ \u30af\u30a8\u30ea\u5b9f\u884c\uff08\u4f8b: \u30e6\u30fc\u30b6\u30fc\u30c6\u30fc\u30d6\u30eb\u304b\u3089\u5168\u30c7\u30fc\u30bf\u53d6\u5f97\uff09\n    $stmt = $pdo-&gt;prepare(\"SELECT id, name, email, created_at FROM users ORDER BY id\");\n    $stmt-&gt;execute();\n    \n    \/\/ \u7d50\u679c\u3092\u914d\u5217\u3068\u3057\u3066\u53d6\u5f97\n    $users = $stmt-&gt;fetchAll(PDO::FETCH_ASSOC);\n    \n    \/\/ \u7d50\u679c\u304c\u3042\u308b\u5834\u5408\u306f\u30c6\u30fc\u30d6\u30eb\u3067\u8868\u793a\n    if (count($users) &gt; 0) {\n        echo '&lt;table border=\"1\"&gt;';\n        echo '&lt;thead&gt;&lt;tr&gt;&lt;th&gt;ID&lt;\/th&gt;&lt;th&gt;\u540d\u524d&lt;\/th&gt;&lt;th&gt;\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9&lt;\/th&gt;&lt;th&gt;\u767b\u9332\u65e5\u6642&lt;\/th&gt;&lt;\/tr&gt;&lt;\/thead&gt;';\n        echo '&lt;tbody&gt;';\n        \n        \/\/ for\u30eb\u30fc\u30d7\u3092\u4f7f\u3063\u3066\u7d50\u679c\u3092\u884c\u3054\u3068\u306b\u51e6\u7406\n        for ($i = 0; $i &lt; count($users); $i++) {\n            \/\/ \u5076\u6570\u884c\u3068\u5947\u6570\u884c\u3067\u80cc\u666f\u8272\u3092\u5909\u3048\u308b\uff08\u898b\u3084\u3059\u3055\u306e\u305f\u3081\uff09\n            $bgcolor = ($i % 2 == 0) ? '#f2f2f2' : '#ffffff';\n            \n            echo '&lt;tr style=\"background-color:' . $bgcolor . '\"&gt;';\n            echo '&lt;td&gt;' . htmlspecialchars($users[$i]['id']) . '&lt;\/td&gt;';\n            echo '&lt;td&gt;' . htmlspecialchars($users[$i]['name']) . '&lt;\/td&gt;';\n            echo '&lt;td&gt;' . htmlspecialchars($users[$i]['email']) . '&lt;\/td&gt;';\n            echo '&lt;td&gt;' . htmlspecialchars($users[$i]['created_at']) . '&lt;\/td&gt;';\n            echo '&lt;\/tr&gt;';\n        }\n        \n        echo '&lt;\/tbody&gt;&lt;\/table&gt;';\n        echo '&lt;p&gt;\u5408\u8a08 ' . count($users) . ' \u4ef6\u306e\u30ec\u30b3\u30fc\u30c9\u304c\u898b\u3064\u304b\u308a\u307e\u3057\u305f\u3002&lt;\/p&gt;';\n    } else {\n        echo '&lt;p&gt;\u30c7\u30fc\u30bf\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002&lt;\/p&gt;';\n    }\n} catch (PDOException $e) {\n    \/\/ \u30a8\u30e9\u30fc\u51e6\u7406\n    echo '&lt;p&gt;\u30a8\u30e9\u30fc: ' . $e-&gt;getMessage() . '&lt;\/p&gt;';\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>\u30dd\u30a4\u30f3\u30c8\u89e3\u8aac<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>PDO<\/code>\u3092\u4f7f\u3063\u3066\u5b89\u5168\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a<\/li>\n\n\n\n<li><code>prepare<\/code>\u3068<code>execute<\/code>\u3067SQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u3092\u9632\u6b62<\/li>\n\n\n\n<li><code>htmlspecialchars<\/code>\u3067XSS\u653b\u6483\u3092\u9632\u6b62<\/li>\n\n\n\n<li><code>for\u30eb\u30fc\u30d7<\/code>\u3067\u30c7\u30fc\u30bf\u884c\u3092\u9806\u306b\u51e6\u7406\u3057\u3001\u5076\u6570\u884c\/\u5947\u6570\u884c\u3067\u80cc\u666f\u8272\u3092\u5207\u308a\u66ff\u3048<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u51e6\u7406\u306b<code>try-catch<\/code>\u3092\u4f7f\u7528<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306e\u5fdc\u7528\u4f8b\u3068\u3057\u3066\u3001\u7279\u5b9a\u306e\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u884c\u3060\u3051\u3092\u5f37\u8abf\u8868\u793a\u3057\u305f\u308a\u3001\u7279\u5b9a\u306e\u30da\u30fc\u30b8\u306b\u8868\u793a\u3059\u308b\u884c\u3060\u3051\u3092\u62bd\u51fa\u3059\u308b\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u51e6\u7406\u306a\u3069\u3082\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3067CSV\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u30b3\u30fc\u30c9\u4f8b<\/h3>\n\n\n\n<p>CSV\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u3001\u51e6\u7406\u3001\u66f8\u304d\u8fbc\u307f\u306f\u3001\u30c7\u30fc\u30bf\u51e6\u7406\u306e\u3088\u304f\u3042\u308b\u30bf\u30b9\u30af\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001CSV\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u307f\u3001\u52a0\u5de5\u3057\u3066\u3001\u65b0\u3057\u3044CSV\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u51fa\u3059\u4f8b\u3092\u7d39\u4ecb\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=\"\">&lt;?php\n\/\/ \u51e6\u7406\u958b\u59cb\u6642\u9593\u3092\u8a18\u9332\n$startTime = microtime(true);\n\n\/\/ \u5165\u529b\u3068\u51fa\u529b\u306e\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\n$inputFile = 'input_data.csv';\n$outputFile = 'processed_data.csv';\n\n\/\/ CSV\u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3059\u308b\u304b\u78ba\u8a8d\nif (!file_exists($inputFile)) {\n    die(\"\u30a8\u30e9\u30fc: \u5165\u529b\u30d5\u30a1\u30a4\u30eb '$inputFile' \u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3002\");\n}\n\ntry {\n    \/\/ \u5165\u529b\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n    $inputHandle = fopen($inputFile, 'r');\n    if ($inputHandle === false) {\n        throw new Exception(\"\u5165\u529b\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u307e\u305b\u3093\u3067\u3057\u305f\u3002\");\n    }\n    \n    \/\/ \u51fa\u529b\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n    $outputHandle = fopen($outputFile, 'w');\n    if ($outputHandle === false) {\n        fclose($inputHandle);\n        throw new Exception(\"\u51fa\u529b\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002\");\n    }\n    \n    \/\/ \u30d8\u30c3\u30c0\u30fc\u884c\u3092\u8aad\u307f\u8fbc\u3093\u3067\u66f8\u304d\u51fa\u3057\n    $headers = fgetcsv($inputHandle);\n    if ($headers === false) {\n        throw new Exception(\"CSV\u30d8\u30c3\u30c0\u30fc\u306e\u8aad\u307f\u8fbc\u307f\u306b\u5931\u6557\u3057\u307e\u3057\u305f\u3002\");\n    }\n    \n    \/\/ \u65b0\u3057\u3044\u30d8\u30c3\u30c0\u30fc\uff08\u8a08\u7b97\u7d50\u679c\u306e\u30ab\u30e9\u30e0\u3092\u8ffd\u52a0\uff09\n    $newHeaders = array_merge($headers, ['Total', 'Average']);\n    fputcsv($outputHandle, $newHeaders);\n    \n    \/\/ \u5168\u884c\u6570\u3092\u30ab\u30a6\u30f3\u30c8\uff08\u9032\u6357\u8868\u793a\u7528\uff09\n    $totalLines = count(file($inputFile)) - 1; \/\/ \u30d8\u30c3\u30c0\u30fc\u3092\u9664\u304f\n    \n    \/\/ \u30c7\u30fc\u30bf\u884c\u3092\u51e6\u7406\n    $lineCount = 0;\n    $successCount = 0;\n    \n    \/\/ \u5404\u884c\u3092\u51e6\u7406\n    while (($row = fgetcsv($inputHandle)) !== false) {\n        $lineCount++;\n        \n        \/\/ \u9032\u6357\u72b6\u6cc1\u3092\u8868\u793a\uff08100\u884c\u3054\u3068\uff09\n        if ($lineCount % 100 === 0) {\n            $progress = round(($lineCount \/ $totalLines) * 100, 1);\n            echo \"\u51e6\u7406\u4e2d... {$lineCount} \/ {$totalLines} \u884c ({$progress}%)&lt;br&gt;\";\n            \/\/ \u51fa\u529b\u30d0\u30c3\u30d5\u30a1\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\u3057\u3066\u9032\u6357\u3092\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u306b\u8868\u793a\n            if (ob_get_level() &gt; 0) {\n                ob_flush();\n                flush();\n            }\n        }\n        \n        \/\/ \u6570\u5024\u30c7\u30fc\u30bf\u3092\u542b\u3080\u5217\u306e\u6dfb\u5b57\uff08\u4f8b: \u52173\u301c5\u304c\u6570\u5024\u30c7\u30fc\u30bf\u3068\u4eee\u5b9a\uff09\n        $valueColumns = [3, 4, 5];\n        \n        \/\/ \u6570\u5024\u30c7\u30fc\u30bf\u304c\u3042\u308b\u304b\u691c\u8a3c\n        $hasValidData = true;\n        for ($i = 0; $i &lt; count($valueColumns); $i++) {\n            $colIndex = $valueColumns[$i];\n            \/\/ \u5217\u304c\u5b58\u5728\u3057\u306a\u3044\u3001\u307e\u305f\u306f\u6570\u5024\u3067\u306a\u3044\u5834\u5408\u306f\u30b9\u30ad\u30c3\u30d7\n            if (!isset($row[$colIndex]) || !is_numeric($row[$colIndex])) {\n                $hasValidData = false;\n                break;\n            }\n        }\n        \n        if ($hasValidData) {\n            \/\/ \u5408\u8a08\u3068\u5e73\u5747\u3092\u8a08\u7b97\n            $sum = 0;\n            for ($i = 0; $i &lt; count($valueColumns); $i++) {\n                $sum += floatval($row[$valueColumns[$i]]);\n            }\n            $average = $sum \/ count($valueColumns);\n            \n            \/\/ \u65b0\u3057\u3044\u884c\u3092\u4f5c\u6210\uff08\u5143\u306e\u30c7\u30fc\u30bf + \u8a08\u7b97\u7d50\u679c\uff09\n            $newRow = array_merge($row, [$sum, $average]);\n            \n            \/\/ \u7d50\u679c\u3092\u51fa\u529b\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u307f\n            fputcsv($outputHandle, $newRow);\n            $successCount++;\n        }\n    }\n    \n    \/\/ \u30d5\u30a1\u30a4\u30eb\u3092\u9589\u3058\u308b\n    fclose($inputHandle);\n    fclose($outputHandle);\n    \n    \/\/ \u51e6\u7406\u7d42\u4e86\u6642\u9593\u3068\u6240\u8981\u6642\u9593\u3092\u8a08\u7b97\n    $endTime = microtime(true);\n    $executionTime = $endTime - $startTime;\n    \n    \/\/ \u7d50\u679c\u3092\u8868\u793a\n    echo \"&lt;h3&gt;\u51e6\u7406\u5b8c\u4e86&lt;\/h3&gt;\";\n    echo \"&lt;p&gt;\u51e6\u7406\u6642\u9593: \" . number_format($executionTime, 2) . \" \u79d2&lt;\/p&gt;\";\n    echo \"&lt;p&gt;\u51e6\u7406\u884c\u6570: {$lineCount} \u884c&lt;\/p&gt;\";\n    echo \"&lt;p&gt;\u6210\u529f\u884c\u6570: {$successCount} \u884c&lt;\/p&gt;\";\n    echo \"&lt;p&gt;\u51fa\u529b\u30d5\u30a1\u30a4\u30eb: {$outputFile}&lt;\/p&gt;\";\n    \n} catch (Exception $e) {\n    \/\/ \u30a8\u30e9\u30fc\u51e6\u7406\n    echo \"&lt;h3&gt;\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f&lt;\/h3&gt;\";\n    echo \"&lt;p&gt;\" . $e-&gt;getMessage() . \"&lt;\/p&gt;\";\n    \n    \/\/ \u958b\u3044\u3066\u3044\u308b\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308c\u3070\u9589\u3058\u308b\n    if (isset($inputHandle) &amp;&amp; is_resource($inputHandle)) {\n        fclose($inputHandle);\n    }\n    if (isset($outputHandle) &amp;&amp; is_resource($outputHandle)) {\n        fclose($outputHandle);\n    }\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>\u30dd\u30a4\u30f3\u30c8\u89e3\u8aac<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>fopen<\/code>\u3001<code>fgetcsv<\/code>\u3001<code>fputcsv<\/code>\u3092\u4f7f\u3063\u305fCSV\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c<\/li>\n\n\n\n<li><code>for\u30eb\u30fc\u30d7<\/code>\u3092\u4f7f\u3063\u305f\u7279\u5b9a\u306e\u5217\u306e\u6570\u5024\u30c1\u30a7\u30c3\u30af\u3068\u8a08\u7b97<\/li>\n\n\n\n<li>\u9032\u6357\u72b6\u6cc1\u306e\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u8868\u793a<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u51e6\u7406\u3068\u9069\u5207\u306a\u30d5\u30a1\u30a4\u30eb\u306e\u30af\u30ed\u30fc\u30ba<\/li>\n\n\n\n<li>\u51e6\u7406\u6642\u9593\u306e\u8a08\u6e2c<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u306e\u30b3\u30fc\u30c9\u306f\u3001\u5927\u91cf\u306eCSV\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u5834\u5408\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u6291\u3048\u308b\u305f\u3081\u3001\u30d5\u30a1\u30a4\u30eb\u30921\u884c\u305a\u3064\u8aad\u307f\u8fbc\u3093\u3067\u51e6\u7406\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u753b\u50cf\u51e6\u7406\u3067\u30d0\u30c3\u30c1\u5909\u63db\u3092\u884c\u3046\u5b9f\u88c5\u4f8b<\/h3>\n\n\n\n<p>\u8907\u6570\u306e\u753b\u50cf\u3092\u4e00\u62ec\u3067\u5909\u63db\u3059\u308b\u51e6\u7406\u306f\u3001Web\u30b5\u30a4\u30c8\u306e\u753b\u50cf\u6700\u9069\u5316\u306a\u3069\u3067\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u7279\u5b9a\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306e\u3059\u3079\u3066\u306e\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092\u30ea\u30b5\u30a4\u30ba\u3057\u3066\u4fdd\u5b58\u3059\u308b\u4f8b\u3092\u7d39\u4ecb\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=\"\">&lt;?php\n\/\/ \u51e6\u7406\u958b\u59cb\u6642\u9593\n$startTime = microtime(true);\n\n\/\/ \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u8a2d\u5b9a\n$sourceDir = 'original_images\/';\n$targetDir = 'resized_images\/';\n$logFile = 'image_resize_log.txt';\n\n\/\/ \u30bf\u30fc\u30b2\u30c3\u30c8\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306f\u4f5c\u6210\nif (!file_exists($targetDir)) {\n    mkdir($targetDir, 0755, true);\n}\n\n\/\/ \u30ea\u30b5\u30a4\u30ba\u8a2d\u5b9a\n$maxWidth = 800;\n$maxHeight = 600;\n$quality = 80; \/\/ JPEG\u54c1\u8cea\uff080-100\uff09\n\n\/\/ \u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\n$log = fopen($logFile, 'w');\nfwrite($log, \"\u753b\u50cf\u30ea\u30b5\u30a4\u30ba\u51e6\u7406\u30ed\u30b0 - \" . date('Y-m-d H:i:s') . \"\\n\");\nfwrite($log, \"----------------------------------------\\n\");\n\n\/\/ \u5bfe\u5fdc\u3059\u308b\u753b\u50cf\u5f62\u5f0f\n$validExtensions = ['jpg', 'jpeg', 'png', 'gif'];\n\ntry {\n    \/\/ \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u958b\u304f\n    $dir = opendir($sourceDir);\n    if (!$dir) {\n        throw new Exception(\"\u30bd\u30fc\u30b9\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u958b\u3051\u307e\u305b\u3093\u3067\u3057\u305f: $sourceDir\");\n    }\n    \n    $fileCount = 0;\n    $successCount = 0;\n    $errorCount = 0;\n    \n    \/\/ \u3059\u3079\u3066\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u30eb\u30fc\u30d7\u51e6\u7406\n    while (($file = readdir($dir)) !== false) {\n        \/\/ \u73fe\u5728\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3068\u89aa\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u7121\u8996\n        if ($file == '.' || $file == '..') {\n            continue;\n        }\n        \n        \/\/ \u62e1\u5f35\u5b50\u3092\u53d6\u5f97\n        $extension = strtolower(pathinfo($file, PATHINFO_EXTENSION));\n        \n        \/\/ \u5bfe\u5fdc\u3059\u308b\u753b\u50cf\u5f62\u5f0f\u304b\u30c1\u30a7\u30c3\u30af\n        if (in_array($extension, $validExtensions)) {\n            $fileCount++;\n            $sourcePath = $sourceDir . $file;\n            $targetPath = $targetDir . $file;\n            \n            $logMessage = \"\u51e6\u7406\u4e2d: $file ... \";\n            fwrite($log, $logMessage);\n            \n            try {\n                \/\/ \u5143\u753b\u50cf\u306e\u60c5\u5831\u3092\u53d6\u5f97\n                list($width, $height, $type) = getimagesize($sourcePath);\n                \n                \/\/ \u65b0\u3057\u3044\u30b5\u30a4\u30ba\u3092\u8a08\u7b97\uff08\u30a2\u30b9\u30da\u30af\u30c8\u6bd4\u3092\u7dad\u6301\uff09\n                $newDimensions = calculateNewDimensions($width, $height, $maxWidth, $maxHeight);\n                $newWidth = $newDimensions['width'];\n                $newHeight = $newDimensions['height'];\n                \n                \/\/ \u5143\u753b\u50cf\u3092\u8aad\u307f\u8fbc\u307f\n                $sourceImage = createImageFromFile($sourcePath, $type);\n                if (!$sourceImage) {\n                    throw new Exception(\"\u753b\u50cf\u306e\u8aad\u307f\u8fbc\u307f\u306b\u5931\u6557\u3057\u307e\u3057\u305f\");\n                }\n                \n                \/\/ \u65b0\u3057\u3044\u753b\u50cf\u3092\u4f5c\u6210\n                $targetImage = imagecreatetruecolor($newWidth, $newHeight);\n                \n                \/\/ PNG\u306e\u5834\u5408\u306f\u900f\u660e\u5ea6\u3092\u4fdd\u6301\n                if ($type == IMAGETYPE_PNG) {\n                    imagesavealpha($targetImage, true);\n                    $transparent = imagecolorallocatealpha($targetImage, 0, 0, 0, 127);\n                    imagefill($targetImage, 0, 0, $transparent);\n                }\n                \n                \/\/ \u30ea\u30b5\u30a4\u30ba\n                imagecopyresampled(\n                    $targetImage, $sourceImage,\n                    0, 0, 0, 0,\n                    $newWidth, $newHeight, $width, $height\n                );\n                \n                \/\/ \u4fdd\u5b58\n                saveImage($targetImage, $targetPath, $type, $quality);\n                \n                \/\/ \u30e1\u30e2\u30ea\u89e3\u653e\n                imagedestroy($sourceImage);\n                imagedestroy($targetImage);\n                \n                $logMessage = \"\u6210\u529f ({$width}x{$height} \u2192 {$newWidth}x{$newHeight})\\n\";\n                fwrite($log, $logMessage);\n                $successCount++;\n                \n            } catch (Exception $e) {\n                $logMessage = \"\u30a8\u30e9\u30fc: \" . $e-&gt;getMessage() . \"\\n\";\n                fwrite($log, $logMessage);\n                $errorCount++;\n            }\n        }\n    }\n    \n    \/\/ \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u9589\u3058\u308b\n    closedir($dir);\n    \n    \/\/ \u51e6\u7406\u6642\u9593\u3092\u8a08\u7b97\n    $endTime = microtime(true);\n    $executionTime = $endTime - $startTime;\n    \n    \/\/ \u7d50\u679c\u3092\u30ed\u30b0\u306b\u8a18\u9332\n    fwrite($log, \"----------------------------------------\\n\");\n    fwrite($log, \"\u51e6\u7406\u5b8c\u4e86\u6642\u9593: \" . date('Y-m-d H:i:s') . \"\\n\");\n    fwrite($log, \"\u51e6\u7406\u6642\u9593: \" . number_format($executionTime, 2) . \" \u79d2\\n\");\n    fwrite($log, \"\u51e6\u7406\u30d5\u30a1\u30a4\u30eb\u6570: $fileCount\\n\");\n    fwrite($log, \"\u6210\u529f: $successCount\\n\");\n    fwrite($log, \"\u30a8\u30e9\u30fc: $errorCount\\n\");\n    \n    \/\/ \u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u3092\u9589\u3058\u308b\n    fclose($log);\n    \n    echo \"&lt;h3&gt;\u753b\u50cf\u51e6\u7406\u5b8c\u4e86&lt;\/h3&gt;\";\n    echo \"&lt;p&gt;\u51e6\u7406\u30d5\u30a1\u30a4\u30eb\u6570: $fileCount&lt;\/p&gt;\";\n    echo \"&lt;p&gt;\u6210\u529f: $successCount&lt;\/p&gt;\";\n    echo \"&lt;p&gt;\u30a8\u30e9\u30fc: $errorCount&lt;\/p&gt;\";\n    echo \"&lt;p&gt;\u8a73\u7d30\u306f $logFile \u3092\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002&lt;\/p&gt;\";\n    \n} catch (Exception $e) {\n    fwrite($log, \"\u81f4\u547d\u7684\u306a\u30a8\u30e9\u30fc: \" . $e-&gt;getMessage() . \"\\n\");\n    fclose($log);\n    \n    echo \"&lt;h3&gt;\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f&lt;\/h3&gt;\";\n    echo \"&lt;p&gt;\" . $e-&gt;getMessage() . \"&lt;\/p&gt;\";\n}\n\n\/\/ \u30a2\u30b9\u30da\u30af\u30c8\u6bd4\u3092\u7dad\u6301\u3057\u305f\u307e\u307e\u65b0\u3057\u3044\u30b5\u30a4\u30ba\u3092\u8a08\u7b97\u3059\u308b\u95a2\u6570\nfunction calculateNewDimensions($width, $height, $maxWidth, $maxHeight) {\n    $ratio = min($maxWidth \/ $width, $maxHeight \/ $height);\n    \n    \/\/ \u3059\u3067\u306b\u6700\u5927\u30b5\u30a4\u30ba\u3088\u308a\u5c0f\u3055\u3044\u5834\u5408\u306f\u5143\u306e\u30b5\u30a4\u30ba\u3092\u8fd4\u3059\n    if ($ratio &gt;= 1) {\n        return ['width' =&gt; $width, 'height' =&gt; $height];\n    }\n    \n    return [\n        'width' =&gt; round($width * $ratio),\n        'height' =&gt; round($height * $ratio)\n    ];\n}\n\n\/\/ \u753b\u50cf\u30bf\u30a4\u30d7\u306b\u5fdc\u3058\u305f\u30a4\u30e1\u30fc\u30b8\u30ea\u30bd\u30fc\u30b9\u3092\u4f5c\u6210\u3059\u308b\u95a2\u6570\nfunction createImageFromFile($file, $type) {\n    switch ($type) {\n        case IMAGETYPE_JPEG:\n            return imagecreatefromjpeg($file);\n        case IMAGETYPE_PNG:\n            return imagecreatefrompng($file);\n        case IMAGETYPE_GIF:\n            return imagecreatefromgif($file);\n        default:\n            return false;\n    }\n}\n\n\/\/ \u753b\u50cf\u30bf\u30a4\u30d7\u306b\u5fdc\u3058\u305f\u5f62\u5f0f\u3067\u4fdd\u5b58\u3059\u308b\u95a2\u6570\nfunction saveImage($image, $file, $type, $quality) {\n    switch ($type) {\n        case IMAGETYPE_JPEG:\n            return imagejpeg($image, $file, $quality);\n        case IMAGETYPE_PNG:\n            \/\/ PNG\u306e\u5834\u5408\u306f\u54c1\u8cea\u3092\u5727\u7e2e\u30ec\u30d9\u30eb\u306b\u5909\u63db\uff080-9\uff09\n            $pngQuality = round((100 - $quality) \/ 11.1);\n            return imagepng($image, $file, $pngQuality);\n        case IMAGETYPE_GIF:\n            return imagegif($image, $file);\n        default:\n            return false;\n    }\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>\u30dd\u30a4\u30f3\u30c8\u89e3\u8aac<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PHP\u306eGD\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3063\u305f\u753b\u50cf\u51e6\u7406<\/li>\n\n\n\n<li><code>opendir<\/code>\u3068<code>readdir<\/code>\u3092\u4f7f\u3063\u305f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u30d5\u30a1\u30a4\u30eb\u306e\u8d70\u67fb<\/li>\n\n\n\n<li>\u753b\u50cf\u5f62\u5f0f\u306b\u5fdc\u3058\u305f\u9069\u5207\u306a\u51e6\u7406<\/li>\n\n\n\n<li>\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u3078\u306e\u51e6\u7406\u72b6\u6cc1\u306e\u8a18\u9332<\/li>\n\n\n\n<li>\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u3092\u9632\u3050\u305f\u3081\u306e<code>imagedestroy<\/code>\u306e\u4f7f\u7528<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u753b\u50cf\u306e\u30a2\u30b9\u30da\u30af\u30c8\u6bd4\u3092\u7dad\u6301\u3057\u305f\u307e\u307e\u30ea\u30b5\u30a4\u30ba\u3057\u3066\u3044\u307e\u3059\u3002\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u753b\u50cf\u306e\u30af\u30ed\u30c3\u30d7\u3084\u7279\u5b9a\u306e\u30d5\u30a3\u30eb\u30bf\u9069\u7528\u306a\u3069\u3001\u3088\u308a\u8907\u96d1\u306a\u51e6\u7406\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">API\u304b\u3089\u306e\u30c7\u30fc\u30bf\u53d6\u5f97\u3068\u51e6\u7406\u3092\u884c\u3046\u30b3\u30fc\u30c9<\/h3>\n\n\n\n<p>\u5916\u90e8API\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3057\u3066\u51e6\u7406\u3059\u308b\u306e\u306f\u3001\u73fe\u4ee3\u306eWeb\u958b\u767a\u3067\u306f\u4e00\u822c\u7684\u306a\u30bf\u30b9\u30af\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u4f8b\u3067\u306f\u3001JSON\u30c7\u30fc\u30bf\u3092\u8fd4\u3059API\u304b\u3089\u60c5\u5831\u3092\u53d6\u5f97\u3057\u3001\u51e6\u7406\u3057\u3066\u8868\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=\"\">&lt;?php\n\/\/ \u51e6\u7406\u958b\u59cb\u6642\u9593\n$startTime = microtime(true);\n\n\/\/ API\u306e\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\uff08\u4f8b\u3068\u3057\u3066JSONPlaceholder\u306eAPI\u3092\u4f7f\u7528\uff09\n$apiUrl = 'https:\/\/jsonplaceholder.typicode.com\/posts';\n\n\/\/ \u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u95a2\u6570\nfunction fetchDataFromApi($url) {\n    $ch = curl_init();\n    \n    \/\/ cURL\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u8a2d\u5b9a\n    curl_setopt($ch, CURLOPT_URL, $url);\n    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);\n    curl_setopt($ch, CURLOPT_TIMEOUT, 30);\n    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); \/\/ \u6ce8: \u672c\u756a\u74b0\u5883\u3067\u306f true \u306b\u3059\u3079\u304d\n    \n    \/\/ \u30c7\u30fc\u30bf\u3092\u53d6\u5f97\n    $response = curl_exec($ch);\n    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);\n    \n    \/\/ \u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\n    if (curl_errno($ch)) {\n        throw new Exception('cURL\u30a8\u30e9\u30fc: ' . curl_error($ch));\n    }\n    \n    \/\/ HTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306e\u78ba\u8a8d\n    if ($httpCode &gt;= 400) {\n        throw new Exception('HTTP\u30a8\u30e9\u30fc: ' . $httpCode);\n    }\n    \n    curl_close($ch);\n    \n    \/\/ JSON\u3092\u30c7\u30b3\u30fc\u30c9\n    $data = json_decode($response, true);\n    if (json_last_error() !== JSON_ERROR_NONE) {\n        throw new Exception('JSON\u30c7\u30b3\u30fc\u30c9\u30a8\u30e9\u30fc: ' . json_last_error_msg());\n    }\n    \n    return $data;\n}\n\n\/\/ \u30c7\u30fc\u30bf\u3092\u8868\u793a\u3059\u308b\u95a2\u6570\nfunction displayPosts($posts, $limit = 10) {\n    echo '&lt;h2&gt;API\u304b\u3089\u53d6\u5f97\u3057\u305f\u6295\u7a3f&lt;\/h2&gt;';\n    \n    \/\/ \u8868\u793a\u3059\u308b\u30c7\u30fc\u30bf\u6570\u3092\u5236\u9650\n    $postsToShow = array_slice($posts, 0, $limit);\n    \n    echo '&lt;table border=\"1\"&gt;';\n    echo '&lt;thead&gt;&lt;tr&gt;&lt;th&gt;ID&lt;\/th&gt;&lt;th&gt;\u30bf\u30a4\u30c8\u30eb&lt;\/th&gt;&lt;th&gt;\u5185\u5bb9\uff08\u629c\u7c8b\uff09&lt;\/th&gt;&lt;\/tr&gt;&lt;\/thead&gt;';\n    echo '&lt;tbody&gt;';\n    \n    \/\/ for\u30eb\u30fc\u30d7\u3067\u6295\u7a3f\u30c7\u30fc\u30bf\u3092\u51e6\u7406\n    for ($i = 0; $i &lt; count($postsToShow); $i++) {\n        $post = $postsToShow[$i];\n        \n        \/\/ \u5185\u5bb9\u306e\u629c\u7c8b\u3092\u4f5c\u6210\uff08\u6700\u521d\u306e100\u6587\u5b57\uff09\n        $excerpt = mb_substr($post['body'], 0, 100);\n        if (mb_strlen($post['body']) &gt; 100) {\n            $excerpt .= '...';\n        }\n        \n        \/\/ \u9694\u884c\u3067\u8272\u3092\u5909\u3048\u308b\n        $rowClass = ($i % 2 == 0) ? 'even-row' : 'odd-row';\n        \n        echo '&lt;tr class=\"' . $rowClass . '\"&gt;';\n        echo '&lt;td&gt;' . htmlspecialchars($post['id']) . '&lt;\/td&gt;';\n        echo '&lt;td&gt;' . htmlspecialchars($post['title']) . '&lt;\/td&gt;';\n        echo '&lt;td&gt;' . htmlspecialchars($excerpt) . '&lt;\/td&gt;';\n        echo '&lt;\/tr&gt;';\n    }\n    \n    echo '&lt;\/tbody&gt;&lt;\/table&gt;';\n}\n\n\/\/ \u691c\u7d22\u95a2\u6570\nfunction searchPosts($posts, $keyword) {\n    $results = [];\n    \n    \/\/ for\u30eb\u30fc\u30d7\u3067\u5168\u6295\u7a3f\u3092\u30c1\u30a7\u30c3\u30af\n    for ($i = 0; $i &lt; count($posts); $i++) {\n        $post = $posts[$i];\n        \n        \/\/ \u30bf\u30a4\u30c8\u30eb\u307e\u305f\u306f\u672c\u6587\u306b\u691c\u7d22\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u304b\u78ba\u8a8d\n        if (stripos($post['title'], $keyword) !== false || \n            stripos($post['body'], $keyword) !== false) {\n            $results[] = $post;\n        }\n    }\n    \n    return $results;\n}\n\n\/\/ \u30e1\u30a4\u30f3\u51e6\u7406\ntry {\n    \/\/ API\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\n    $posts = fetchDataFromApi($apiUrl);\n    \n    \/\/ \u691c\u7d22\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u3042\u308c\u3070\u691c\u7d22\u3092\u5b9f\u884c\n    if (isset($_GET['search']) &amp;&amp; !empty($_GET['search'])) {\n        $keyword = $_GET['search'];\n        $searchResults = searchPosts($posts, $keyword);\n        \n        echo '&lt;h3&gt;\u691c\u7d22\u7d50\u679c: \"' . htmlspecialchars($keyword) . '\"&lt;\/h3&gt;';\n        echo '&lt;p&gt;' . count($searchResults) . ' \u4ef6\u898b\u3064\u304b\u308a\u307e\u3057\u305f\u3002&lt;\/p&gt;';\n        \n        if (count($searchResults) &gt; 0) {\n            displayPosts($searchResults);\n        }\n    } else {\n        \/\/ \u691c\u7d22\u304c\u306a\u3051\u308c\u3070\u5168\u30c7\u30fc\u30bf\uff08\u307e\u305f\u306f\u4e00\u90e8\uff09\u3092\u8868\u793a\n        displayPosts($posts);\n    }\n    \n    \/\/ \u7d71\u8a08\u60c5\u5831\u3092\u8868\u793a\n    $totalPosts = count($posts);\n    $uniqueUserIds = [];\n    \n    for ($i = 0; $i &lt; $totalPosts; $i++) {\n        $uniqueUserIds[$posts[$i]['userId']] = true;\n    }\n    \n    $totalUsers = count($uniqueUserIds);\n    \n    echo '&lt;div class=\"stats\"&gt;';\n    echo '&lt;h3&gt;\u7d71\u8a08\u60c5\u5831&lt;\/h3&gt;';\n    echo '&lt;p&gt;\u7dcf\u6295\u7a3f\u6570: ' . $totalPosts . '&lt;\/p&gt;';\n    echo '&lt;p&gt;\u6295\u7a3f\u30e6\u30fc\u30b6\u30fc\u6570: ' . $totalUsers . '&lt;\/p&gt;';\n    echo '&lt;\/div&gt;';\n    \n    \/\/ \u51e6\u7406\u6642\u9593\u3092\u8868\u793a\n    $endTime = microtime(true);\n    $executionTime = $endTime - $startTime;\n    echo '&lt;p&gt;&lt;small&gt;\u51e6\u7406\u6642\u9593: ' . number_format($executionTime, 4) . ' \u79d2&lt;\/small&gt;&lt;\/p&gt;';\n    \n} catch (Exception $e) {\n    echo '&lt;div class=\"error\"&gt;';\n    echo '&lt;h3&gt;\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f&lt;\/h3&gt;';\n    echo '&lt;p&gt;' . $e-&gt;getMessage() . '&lt;\/p&gt;';\n    echo '&lt;\/div&gt;';\n}\n?&gt;\n\n&lt;!-- \u691c\u7d22\u30d5\u30a9\u30fc\u30e0 --&gt;\n&lt;form method=\"get\" action=\"\"&gt;\n    &lt;input type=\"text\" name=\"search\" placeholder=\"\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u691c\u7d22\"&gt;\n    &lt;button type=\"submit\"&gt;\u691c\u7d22&lt;\/button&gt;\n&lt;\/form&gt;\n\n&lt;style&gt;\n    .even-row { background-color: #f2f2f2; }\n    .odd-row { background-color: #ffffff; }\n    .error { color: red; border: 1px solid red; padding: 10px; margin: 10px 0; }\n    .stats { background-color: #e6f7ff; padding: 10px; margin: 10px 0; }\n&lt;\/style&gt;\n<\/pre>\n\n\n\n<p><strong>\u30dd\u30a4\u30f3\u30c8\u89e3\u8aac<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>curl<\/code>\u3092\u4f7f\u3063\u305fAPI\u30ea\u30af\u30a8\u30b9\u30c8<\/li>\n\n\n\n<li>JSON\u30c7\u30fc\u30bf\u306e\u30c7\u30b3\u30fc\u30c9\u3068\u51e6\u7406<\/li>\n\n\n\n<li><code>for\u30eb\u30fc\u30d7<\/code>\u3092\u4f7f\u3063\u305f\u691c\u7d22\u6a5f\u80fd\u306e\u5b9f\u88c5<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3068\u30ec\u30b9\u30dd\u30f3\u30b9\u30b3\u30fc\u30c9\u306e\u30c1\u30a7\u30c3\u30af<\/li>\n\n\n\n<li>\u51e6\u7406\u6642\u9593\u306e\u8a08\u6e2c<\/li>\n\n\n\n<li>\u30ad\u30fc\u30ef\u30fc\u30c9\u691c\u7d22\u30d5\u30a9\u30fc\u30e0\u306e\u7d71\u5408<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u4f8b\u3092\u901a\u3058\u3066\u3001for\u30eb\u30fc\u30d7\u3092\u69d8\u3005\u306a\u72b6\u6cc1\u3067\u6d3b\u7528\u3059\u308b\u65b9\u6cd5\u3092\u7406\u89e3\u3067\u304d\u307e\u3059\u3002\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u57fa\u672c\u30d1\u30bf\u30fc\u30f3\u3092\u30d9\u30fc\u30b9\u306b\u3001\u3088\u308a\u8907\u96d1\u306a\u51e6\u7406\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-19\">PHP for\u30eb\u30fc\u30d7\u4f7f\u7528\u6642\u306e\u6ce8\u610f\u70b9\u3068\u843d\u3068\u3057\u7a74<\/h2>\n\n\n\n<p>PHP\u306efor\u30eb\u30fc\u30d7\u306f\u5f37\u529b\u306a\u6a5f\u80fd\u3067\u3059\u304c\u3001\u9069\u5207\u306b\u4f7f\u7528\u3057\u306a\u3044\u3068\u4e88\u671f\u305b\u306c\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u5b9f\u52d9\u3067\u3088\u304f\u906d\u9047\u3059\u308bfor\u30eb\u30fc\u30d7\u306e\u6ce8\u610f\u70b9\u3084\u843d\u3068\u3057\u7a74\u3001\u305d\u3057\u3066\u305d\u308c\u3089\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u306e\u5bfe\u7b56\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306b\u95a2\u3059\u308b\u6ce8\u610f\u4e8b\u9805\u3068\u5bfe\u7b56\u65b9\u6cd5<\/h3>\n\n\n\n<p>PHP\u3067for\u30eb\u30fc\u30d7\u3092\u4f7f\u3063\u3066\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3059\u308b\u969b\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u304c\u6025\u6fc0\u306b\u5897\u52a0\u3057\u3001\u300cAllowed memory size exhausted\u300d\u3068\u3044\u3046\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u4e3b\u306a\u539f\u56e0\u3068\u5bfe\u7b56\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5927\u304d\u306a\u914d\u5217\u3092\u4f5c\u6210\u3059\u308b\u5834\u5408\uff1a<\/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=\"\">&lt;?php\n\/\/ \u30e1\u30e2\u30ea\u3092\u5927\u91cf\u306b\u6d88\u8cbb\u3059\u308b\u4f8b\n$largeArray = [];\nfor ($i = 0; $i &lt; 1000000; $i++) {\n    $largeArray[] = \"\u30c7\u30fc\u30bf\" . $i; \/\/ \u6bce\u56de\u65b0\u3057\u3044\u6587\u5b57\u5217\u3092\u4f5c\u6210\u3057\u3066\u30e1\u30e2\u30ea\u3092\u6d88\u8cbb\n}\n\/\/ \u3053\u306e\u6642\u70b9\u3067\u30e1\u30e2\u30ea\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u3042\u308a\n\n\/\/ \u6539\u5584\u7b56\uff1a\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u51e6\u7406\u3059\u308b\n$batchSize = 10000;\nfor ($i = 0; $i &lt; 1000000; $i++) {\n    $data = \"\u30c7\u30fc\u30bf\" . $i;\n    \/\/ \u51e6\u7406...\n    \n    \/\/ \u30e1\u30e2\u30ea\u3092\u5b9a\u671f\u7684\u306b\u89e3\u653e\n    if ($i % $batchSize == 0) {\n        gc_collect_cycles(); \/\/ \u30ac\u30d9\u30fc\u30b8\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u660e\u793a\u7684\u306b\u5b9f\u884c\n    }\n}\n?&gt;\n<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30d5\u30a1\u30a4\u30eb\u8aad\u307f\u8fbc\u307f\u3067\u306e\u30e1\u30e2\u30ea\u6d88\u8cbb\uff1a<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u60aa\u3044\u4f8b\uff1a\u4e00\u5ea6\u306b\u30d5\u30a1\u30a4\u30eb\u5168\u4f53\u3092\u8aad\u307f\u8fbc\u3080\n$lines = file('huge_log.txt'); \/\/ \u5de8\u5927\u30d5\u30a1\u30a4\u30eb\u3092\u30e1\u30e2\u30ea\u306b\u8aad\u307f\u8fbc\u3080\nfor ($i = 0; $i &lt; count($lines); $i++) {\n    \/\/ \u5404\u884c\u3092\u51e6\u7406...\n}\n\n\/\/ \u6539\u5584\u7b56\uff1a1\u884c\u305a\u3064\u8aad\u307f\u8fbc\u3093\u3067\u51e6\u7406\n$handle = fopen('huge_log.txt', 'r');\nif ($handle) {\n    $i = 0;\n    while (($line = fgets($handle)) !== false) {\n        \/\/ \u5404\u884c\u3092\u51e6\u7406...\n        $i++;\n    }\n    fclose($handle);\n}\n?&gt;\n<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5927\u91cf\u751f\u6210\uff1a<\/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=\"\">&lt;?php\n\/\/ \u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u53ef\u80fd\u6027\u304c\u3042\u308b\u4f8b\n$objects = [];\nfor ($i = 0; $i &lt; 100000; $i++) {\n    $obj = new StdClass();\n    $obj-&gt;data = str_repeat('x', 1000); \/\/ \u5927\u304d\u306a\u30c7\u30fc\u30bf\n    $objects[] = $obj;\n}\n\n\/\/ \u6539\u5584\u7b56\uff1a\u5fc5\u8981\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3060\u3051\u3092\u4fdd\u6301\nfor ($i = 0; $i &lt; 100000; $i++) {\n    $obj = new StdClass();\n    $obj-&gt;data = str_repeat('x', 1000);\n    \n    \/\/ \u51e6\u7406\u304c\u7d42\u308f\u3063\u305f\u3089\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u7834\u68c4\n    process($obj);\n    $obj = null; \/\/ \u660e\u793a\u7684\u306b\u89e3\u653e\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u76e3\u8996\u3068\u6700\u9069\u5316\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u76e3\u8996\u3059\u308b\u4f8b\n$initialMemory = memory_get_usage();\n\nfor ($i = 0; $i &lt; 10000; $i++) {\n    \/\/ \u4f55\u3089\u304b\u306e\u51e6\u7406...\n    \n    \/\/ \u5b9a\u671f\u7684\u306b\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u30c1\u30a7\u30c3\u30af\n    if ($i % 1000 == 0) {\n        $currentMemory = memory_get_usage();\n        $memoryDiff = $currentMemory - $initialMemory;\n        echo \"\u30eb\u30fc\u30d7 {$i}: \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf \" . round($memoryDiff \/ 1024 \/ 1024, 2) . \" MB&lt;br&gt;\";\n    }\n}\n\necho \"\u6700\u5927\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf: \" . round(memory_get_peak_usage() \/ 1024 \/ 1024, 2) . \" MB\";\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-21\">\u7121\u9650\u30eb\u30fc\u30d7\u3092\u907f\u3051\u308b\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p>\u7121\u9650\u30eb\u30fc\u30d7\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u30d5\u30ea\u30fc\u30ba\u3057\u305f\u308a\u30b5\u30fc\u30d0\u30fc\u30ea\u30bd\u30fc\u30b9\u3092\u6d6a\u8cbb\u3057\u305f\u308a\u3059\u308b\u539f\u56e0\u3068\u306a\u308a\u307e\u3059\u3002for\u30eb\u30fc\u30d7\u3067\u7121\u9650\u30eb\u30fc\u30d7\u304c\u767a\u751f\u3059\u308b\u4e3b\u306a\u539f\u56e0\u3068\u5bfe\u7b56\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>1. \u30a4\u30f3\u30af\u30ea\u30e1\u30f3\u30c8\/\u30c7\u30af\u30ea\u30e1\u30f3\u30c8\u306e\u5fd8\u308c\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u7121\u9650\u30eb\u30fc\u30d7\u306b\u306a\u308b\u4f8b\nfor ($i = 0; $i &lt; 10; ) { \/\/ \u5897\u5206\u5f0f\u304c\u306a\u3044\n    echo \"i: $i&lt;br&gt;\";\n    \/\/ $i\u304c\u5897\u52a0\u3057\u306a\u3044\u306e\u3067\u6761\u4ef6\u304c\u5e38\u306btrue\u306b\u306a\u308b\n}\n\n\/\/ \u6b63\u3057\u3044\u4f8b\nfor ($i = 0; $i &lt; 10; $i++) {\n    echo \"i: $i&lt;br&gt;\";\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>2. \u6761\u4ef6\u5f0f\u306e\u8ad6\u7406\u30a8\u30e9\u30fc\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u7121\u9650\u30eb\u30fc\u30d7\u306b\u306a\u308b\u4f8b\nfor ($i = 0; $i &gt; -1; $i++) {\n    echo \"i: $i&lt;br&gt;\";\n    \/\/ $i\u306f\u5e38\u306b-1\u3088\u308a\u5927\u304d\u3044\u306e\u3067\u6c38\u9060\u306b\u6761\u4ef6\u304ctrue\u306b\u306a\u308b\n}\n\n\/\/ \u6b63\u3057\u3044\u4f8b\nfor ($i = 0; $i &lt; 10; $i++) {\n    echo \"i: $i&lt;br&gt;\";\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>3. \u6761\u4ef6\u5909\u6570\u306e\u4e88\u671f\u305b\u306c\u5909\u66f4\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n$array = [1, 2, 3, 4, 5];\n\/\/ \u914d\u5217\u306e\u8981\u7d20\u3092\u524a\u9664\u3057\u306a\u304c\u3089\u51e6\u7406\u3059\u308b\u5371\u967a\u306a\u4f8b\nfor ($i = 0; $i &lt; count($array); $i++) {\n    echo \"\u51e6\u7406: \" . $array[$i] . \"&lt;br&gt;\";\n    \/\/ \u51e6\u7406\u4e2d\u306b\u914d\u5217\u306e\u8981\u7d20\u3092\u524a\u9664\n    array_splice($array, $i, 1);\n    \/\/ $i\u306f\u5897\u52a0\u3059\u308b\u304c\u3001\u914d\u5217\u306e\u9577\u3055\u304c\u6e1b\u308b\u305f\u3081\u3001\u6dfb\u5b57\u304c\u305a\u308c\u308b\n}\n\n\/\/ \u6539\u5584\u7b56\uff1a\u5f8c\u308d\u304b\u3089\u51e6\u7406\n$array = [1, 2, 3, 4, 5];\nfor ($i = count($array) - 1; $i &gt;= 0; $i--) {\n    echo \"\u51e6\u7406: \" . $array[$i] . \"&lt;br&gt;\";\n    array_splice($array, $i, 1);\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>4. \u5b89\u5168\u7b56\u3068\u3057\u3066\u306e\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u6a5f\u69cb\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u6a5f\u69cb\u3092\u7d44\u307f\u8fbc\u3093\u3060\u30eb\u30fc\u30d7\n$startTime = time();\n$timeoutSeconds = 10; \/\/ \u6700\u592710\u79d2\u3067\u4e2d\u65ad\n\nfor ($i = 0; $i &lt; 1000000; $i++) {\n    \/\/ \u4f55\u3089\u304b\u306e\u51e6\u7406...\n    \n    \/\/ \u5b9f\u884c\u6642\u9593\u304c\u4e00\u5b9a\u3092\u8d85\u3048\u305f\u3089\u5f37\u5236\u7d42\u4e86\n    if (time() - $startTime &gt; $timeoutSeconds) {\n        echo \"\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3057\u307e\u3057\u305f\u3002i = {$i}\u3067\u51e6\u7406\u3092\u4e2d\u65ad\u3057\u307e\u3059\u3002\";\n        break;\n    }\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>5. PHP\u306e\u5b9f\u884c\u6642\u9593\u5236\u9650\u306e\u6ce8\u610f\u70b9\uff1a<\/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\/\/ \u9577\u6642\u9593\u5b9f\u884c\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u51e6\u7406\u306e\u5834\u5408\nset_time_limit(300); \/\/ \u5b9f\u884c\u6642\u9593\u5236\u9650\u30925\u5206\u306b\u8a2d\u5b9a\uff080\u306f\u7121\u5236\u9650\u3060\u304c\u975e\u63a8\u5968\uff09\n\n\/\/ \u5927\u304d\u306a\u30eb\u30fc\u30d7\nfor ($i = 0; $i &lt; 1000000; $i++) {\n    \/\/ \u6642\u9593\u306e\u304b\u304b\u308b\u51e6\u7406...\n    \n    \/\/ \u5b9a\u671f\u7684\u306b\u5236\u9650\u6642\u9593\u3092\u30ea\u30bb\u30c3\u30c8\n    if ($i % 10000 == 0) {\n        set_time_limit(30); \/\/ \u6b8b\u308a\u6642\u9593\u309230\u79d2\u306b\u30ea\u30bb\u30c3\u30c8\n    }\n}\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-22\">\u914d\u5217\u64cd\u4f5c\u6642\u306b\u3088\u304f\u3042\u308b\u9593\u9055\u3044\u3068\u305d\u306e\u56de\u907f\u7b56<\/h3>\n\n\n\n<p>for\u30eb\u30fc\u30d7\u3067\u914d\u5217\u3092\u64cd\u4f5c\u3059\u308b\u969b\u306b\u3088\u304f\u8d77\u3053\u308b\u554f\u984c\u3068\u89e3\u6c7a\u7b56\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>1. \u6dfb\u5b57\u304c\u7bc4\u56f2\u5916\u306b\u306a\u308b\u554f\u984c\uff1a<\/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$array = [1, 2, 3];\n\n\/\/ \u9593\u9055\u3063\u305f\u4f8b\uff1a\u7bc4\u56f2\u5916\u30a2\u30af\u30bb\u30b9\nfor ($i = 0; $i &lt;= count($array); $i++) { \/\/ &lt;= \u3092\u4f7f\u3046\u3068\u6700\u5f8c\u306e\u6dfb\u5b57\u304c\u7bc4\u56f2\u5916\u306b\u306a\u308b\n    echo $array[$i] . \"&lt;br&gt;\"; \/\/ $i = 3 \u3067Undefined array key 3\u30a8\u30e9\u30fc\n}\n\n\/\/ \u6b63\u3057\u3044\u4f8b\nfor ($i = 0; $i &lt; count($array); $i++) { \/\/ &lt; \u3092\u4f7f\u3046\n    echo $array[$i] . \"&lt;br&gt;\";\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>2. \u30eb\u30fc\u30d7\u5185\u3067\u914d\u5217\u9577\u3092\u5909\u66f4\u3059\u308b\u554f\u984c\uff1a<\/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$fruits = ['apple', 'banana', 'cherry', 'date'];\n\n\/\/ \u554f\u984c\u306e\u3042\u308b\u4f8b\uff1a\u30eb\u30fc\u30d7\u4e2d\u306b\u914d\u5217\u3092\u5909\u66f4\nfor ($i = 0; $i &lt; count($fruits); $i++) {\n    echo \"\u51e6\u7406: \" . $fruits[$i] . \"&lt;br&gt;\";\n    \n    if ($fruits[$i] == 'banana') {\n        \/\/ \u914d\u5217\u306e\u8981\u7d20\u3092\u8ffd\u52a0\n        $fruits[] = 'elderberry';\n        \/\/ \u914d\u5217\u306e\u9577\u3055\u304c\u5909\u308f\u308b\u304c\u3001count($fruits)\u3082\u5897\u3048\u308b\u305f\u3081\u7121\u9650\u30eb\u30fc\u30d7\u306e\u53ef\u80fd\u6027\n    }\n}\n\n\/\/ \u6539\u5584\u7b56\uff1a\u914d\u5217\u306e\u9577\u3055\u3092\u4e8b\u524d\u306b\u4fdd\u5b58\n$fruitsCount = count($fruits);\nfor ($i = 0; $i &lt; $fruitsCount; $i++) {\n    echo \"\u51e6\u7406: \" . $fruits[$i] . \"&lt;br&gt;\";\n    \n    if ($fruits[$i] == 'banana') {\n        $fruits[] = 'elderberry'; \/\/ \u5b89\u5168\u306b\u8ffd\u52a0\u3067\u304d\u308b\n    }\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>3. \u9023\u60f3\u914d\u5217\u306e\u30ad\u30fc\u306b\u5bfe\u3059\u308b\u8aa4\u3063\u305f\u30a2\u30af\u30bb\u30b9\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n$userInfo = [\n    'name' =&gt; 'John',\n    'age' =&gt; 30,\n    'city' =&gt; 'Tokyo'\n];\n\n\/\/ \u9593\u9055\u3063\u305f\u4f8b\uff1a\u9023\u60f3\u914d\u5217\u3092\u6dfb\u5b57\u3067\u30a2\u30af\u30bb\u30b9\nfor ($i = 0; $i &lt; count($userInfo); $i++) {\n    echo $userInfo[$i] . \"&lt;br&gt;\"; \/\/ \u6570\u5024\u30ad\u30fc\u304c\u5b58\u5728\u3057\u306a\u3044\u306e\u3067\u30a8\u30e9\u30fc\n}\n\n\/\/ \u6b63\u3057\u3044\u4f8b\uff1aforeach \u3092\u4f7f\u3046\nforeach ($userInfo as $key =&gt; $value) {\n    echo \"{$key}: {$value}&lt;br&gt;\";\n}\n\n\/\/ \u9023\u60f3\u914d\u5217\u3092for\u30eb\u30fc\u30d7\u3067\u51e6\u7406\u3057\u305f\u3044\u5834\u5408\n$keys = array_keys($userInfo);\nfor ($i = 0; $i &lt; count($keys); $i++) {\n    $key = $keys[$i];\n    echo \"{$key}: {$userInfo[$key]}&lt;br&gt;\";\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>4. \u53c2\u7167\u6e21\u3057\u306b\u3088\u308b\u4e88\u671f\u305b\u306c\u5909\u66f4\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n$numbers = [1, 2, 3, 4, 5];\n\n\/\/ \u554f\u984c\u306e\u3042\u308b\u4f8b\uff1a\u53c2\u7167\u3092\u4f7f\u3063\u3066\u5024\u3092\u5909\u66f4\nfor ($i = 0; $i &lt; count($numbers); $i++) {\n    $value = &amp;$numbers[$i]; \/\/ \u53c2\u7167\u3067\u5024\u3092\u53d6\u5f97\n    $value *= 2; \/\/ \u53c2\u7167\u5148\u306e\u5024\u3092\u5909\u66f4\n    \/\/ \u3053\u3053\u3067$value\u3078\u306e\u53c2\u7167\u304c\u6b8b\u308a\u7d9a\u3051\u308b\n}\n\/\/ \u3053\u306e\u6642\u70b9\u3067$value\u306f\u6700\u5f8c\u306e\u8981\u7d20\u3078\u306e\u53c2\u7167\u3092\u6301\u3063\u3066\u3044\u308b\n$value = 100; \/\/ \u6700\u5f8c\u306e\u8981\u7d20\u304c\u5909\u66f4\u3055\u308c\u308b\nprint_r($numbers); \/\/ Array ( [0] =&gt; 2 [1] =&gt; 4 [2] =&gt; 6 [3] =&gt; 8 [4] =&gt; 100 )\n\n\/\/ \u6539\u5584\u7b56\uff1a\u30eb\u30fc\u30d7\u5185\u3067\u30a2\u30f3\u30bb\u30c3\u30c8\n$numbers = [1, 2, 3, 4, 5];\nfor ($i = 0; $i &lt; count($numbers); $i++) {\n    $value = &amp;$numbers[$i];\n    $value *= 2;\n    unset($value); \/\/ \u53c2\u7167\u3092\u660e\u793a\u7684\u306b\u89e3\u9664\n}\nprint_r($numbers); \/\/ Array ( [0] =&gt; 2 [1] =&gt; 4 [2] =&gt; 6 [3] =&gt; 8 [4] =&gt; 10 )\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-23\">PHP\u30d0\u30fc\u30b8\u30e7\u30f3\u9593\u306e\u4e92\u63db\u6027\u306b\u95a2\u3059\u308b\u6ce8\u610f\u70b9<\/h3>\n\n\n\n<p>PHP\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u3063\u3066\u3001for\u30eb\u30fc\u30d7\u306e\u52d5\u4f5c\u3084\u6700\u9069\u306a\u4f7f\u3044\u65b9\u304c\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. PHP\u30d0\u30fc\u30b8\u30e7\u30f3\u3054\u3068\u306e\u5909\u66f4\u70b9\uff1a<\/strong><\/p>\n\n\n<div id=\"id-5d016147-a006-4ce0-8d82-a31048f3f5f4\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>PHP\u30d0\u30fc\u30b8\u30e7\u30f3<\/th><th>\u4e3b\u306a\u5909\u66f4\u70b9<\/th><\/tr><\/thead><tbody><tr><td>PHP 5.x<\/td><td>for\u30eb\u30fc\u30d7\u306e\u5404\u90e8\u5206\u306f\u3001\u5b9f\u884c\u306e\u90fd\u5ea6\u8a55\u4fa1\u3055\u308c\u308b<\/td><\/tr><tr><td>PHP 7.0+<\/td><td>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6539\u5584\u3068\u6700\u9069\u5316<\/td><\/tr><tr><td>PHP 7.3+<\/td><td>for\u30eb\u30fc\u30d7\u306e\u30b9\u30b3\u30fc\u30d7\u5185\u3067\u5909\u6570\u304c\u5ba3\u8a00\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u305f<\/td><\/tr><tr><td>PHP 7.4+<\/td><td>\u30a2\u30ed\u30fc\u95a2\u6570(<code>=&gt;<\/code>)\u304c\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3001\u30eb\u30fc\u30d7\u5185\u3067\u3088\u308a\u7c21\u6f54\u306b\u66f8\u3051\u308b<\/td><\/tr><tr><td>PHP 8.0+<\/td><td>JIT\u30b3\u30f3\u30d1\u30a4\u30e9\u304c\u5c0e\u5165\u3055\u308c\u3001\u30eb\u30fc\u30d7\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5411\u4e0a<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p><strong>2. PHP 7.3\u306e\u30eb\u30fc\u30d7\u30b9\u30b3\u30fc\u30d7\u5ba3\u8a00\uff1a<\/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\/\/ PHP 7.3\u4ee5\u964d\nfor ($i = 0; $i &lt; 5; $i++) {\n    echo $i;\n}\n\/\/ $i\u306f\u307e\u3060\u30a2\u30af\u30bb\u30b9\u53ef\u80fd\n\n\/\/ PHP 7.3\u4ee5\u964d\u3067\u306f\u5909\u6570\u5ba3\u8a00\u3092\u30b9\u30b3\u30fc\u30d7\u5185\u306b\u5236\u9650\u3067\u304d\u308b\nfor (  $i = 0; $i &lt; 5; $i++) {\n    echo $i;\n}\n\/\/ $i\u306f\u3053\u3053\u3067\u30a2\u30af\u30bb\u30b9\u4e0d\u53ef\uff08\u30b9\u30b3\u30fc\u30d7\u5916\uff09\n?&gt;\n<\/pre>\n\n\n\n<p><strong>3. PHP 5\u30687\u306e\u9055\u3044\u3068\u6ce8\u610f\u70b9\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ PHP 5.x\u3067\u306e\u52d5\u4f5c\n$array = ['a', 'b', 'c'];\nfor ($i = 0, $size = count($array); $i &lt; $size; $i++) {\n    echo $array[$i];\n}\n\/\/ PHP 5\u3067\u306f$size\u3092\u521d\u671f\u5316\u5f0f\u3067\u8a08\u7b97\u3057\u3066\u3082\u6bce\u56decount()\u304c\u5b9f\u884c\u3055\u308c\u308b\u53ef\u80fd\u6027\u3042\u308a\n\n\/\/ PHP 7\u4ee5\u964d\u3067\u306f\u3088\u308a\u52b9\u7387\u7684\n$array = ['a', 'b', 'c'];\n$size = count($array); \/\/ \u30eb\u30fc\u30d7\u5916\u3067\u4e00\u5ea6\u3060\u3051\u8a08\u7b97\nfor ($i = 0; $i &lt; $size; $i++) {\n    echo $array[$i];\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>4. PHP 8\u306e\u30cd\u30a4\u30c6\u30a3\u30d6JIT\u306b\u3088\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\uff1a<\/strong><\/p>\n\n\n\n<p>PHP 8\u3067\u306f\u65b0\u305f\u306bJIT\u30b3\u30f3\u30d1\u30a4\u30e9\u304c\u5c0e\u5165\u3055\u308c\u3001\u7279\u306b\u5927\u304d\u306a\u30eb\u30fc\u30d7\u51e6\u7406\u3067\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5411\u4e0a\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u6700\u9069\u5316\u3092\u6d3b\u304b\u3059\u305f\u3081\u306b\u306f\u3001\u578b\u306e\u4e00\u8cab\u6027\u3092\u4fdd\u3064\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=\"\">&lt;?php\n\/\/ PHP 8\u3067JIT\u306e\u6069\u6075\u3092\u53d7\u3051\u3084\u3059\u3044\u4f8b\nfunction sumIntegers(int $max): int {\n    $sum = 0;\n    for ($i = 1; $i &lt;= $max; $i++) {\n        $sum += $i;\n    }\n    return $sum;\n}\n\n\/\/ \u578b\u304c\u6df7\u3056\u308b\u3068JIT\u306e\u6700\u9069\u5316\u304c\u52b9\u304d\u306b\u304f\u304f\u306a\u308b\u4f8b\nfunction mixedTypes($max) {\n    $sum = 0;\n    for ($i = 1; $i &lt;= $max; $i++) {\n        if ($i % 2 == 0) {\n            $sum += $i;\n        } else {\n            $sum += (string)$i; \/\/ \u6587\u5b57\u5217\u306b\u5909\u63db\uff08\u578b\u304c\u6df7\u3056\u308b\uff09\n        }\n    }\n    return $sum;\n}\n?&gt;\n<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6ce8\u610f\u70b9\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306b\u5bfe\u51e6\u3059\u308b\u3053\u3068\u3067\u3001PHP\u306efor\u30eb\u30fc\u30d7\u3092\u4f7f\u3063\u305f\u30b3\u30fc\u30c9\u306e\u5b89\u5b9a\u6027\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u3001\u307e\u305a\u3053\u308c\u3089\u306e\u4e00\u822c\u7684\u306a\u843d\u3068\u3057\u7a74\u3092\u78ba\u8a8d\u3057\u3066\u307f\u308b\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-24\">PHP for\u30eb\u30fc\u30d7\u3068\u30e2\u30c0\u30f3PHP\u306e\u95a2\u4fc2\u6027<\/h2>\n\n\n\n<p>PHP\u306f\u9577\u3044\u5e74\u6708\u3092\u304b\u3051\u3066\u9032\u5316\u3057\u3066\u304d\u307e\u3057\u305f\u304c\u3001\u7279\u306bPHP 7\u4ee5\u964d\u306f\u5927\u304d\u306a\u5909\u9769\u671f\u3092\u8fce\u3048\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u7ae0\u3067\u306f\u3001\u6700\u65b0\u306ePHP\uff08PHP 7\u304a\u3088\u30738\u7cfb\uff09\u306b\u304a\u3051\u308bfor\u30eb\u30fc\u30d7\u306e\u4f4d\u7f6e\u3065\u3051\u3068\u3001\u30e2\u30c0\u30f3\u306aPHP\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3051\u308b\u9078\u629e\u80a2\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-25\">PHP 7\/8\u3067\u306e\u6700\u9069\u5316\u3068\u65b0\u6a5f\u80fd\u304cfor\u30eb\u30fc\u30d7\u306b\u4e0e\u3048\u308b\u5f71\u97ff<\/h3>\n\n\n\n<p>PHP 7\u4ee5\u964d\u3001\u8a00\u8a9e\u81ea\u4f53\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3057\u3001\u30eb\u30fc\u30d7\u51e6\u7406\u3082\u9ad8\u901f\u5316\u3055\u308c\u307e\u3057\u305f\u3002PHP 8\u3067\u306f\u65b0\u305f\u306bJIT\u30b3\u30f3\u30d1\u30a4\u30e9\u304c\u5c0e\u5165\u3055\u308c\u3001\u7279\u306b\u7e70\u308a\u8fd4\u3057\u5b9f\u884c\u3055\u308c\u308b\u51e6\u7406\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5411\u4e0a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-26\">PHP 7\u306e\u4e3b\u8981\u306a\u6539\u5584\u70b9<\/h4>\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\/\/ PHP 7\u3067\u306e\u30bf\u30a4\u30d7\u30d2\u30f3\u30c6\u30a3\u30f3\u30b0\u3092\u4f7f\u3063\u305ffor\u30eb\u30fc\u30d7\nfunction sumIntArray(array $numbers): int {\n    $sum = 0;\n    for ($i = 0; $i &lt; count($numbers); $i++) {\n        $sum += $numbers[$i];\n    }\n    return $sum;\n}\n\n\/\/ \u914d\u5217\u5185\u5305\u8868\u8a18\u7684\u306a\u66f8\u304d\u65b9\uff08PHP 7.4\u4ee5\u964d\u306e\u30a2\u30ed\u30fc\u95a2\u6570\u3092\u4f7f\u7528\uff09\n$numbers = [1, 2, 3, 4, 5];\n$squared = array_map(fn($n) =&gt; $n * $n, $numbers);\n?&gt;\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-27\">PHP 8\u3067\u306e\u65b0\u6a5f\u80fd\u3068for\u30eb\u30fc\u30d7\u3078\u306e\u5f71\u97ff<\/h4>\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\/\/ PHP 8\u306enamed arguments\u3068nullsafe operator\u3092\u6d3b\u7528\nfunction processItems(array $items, ?callable $callback = null, bool $preserveKeys = false): array {\n    $result = [];\n    for ($i = 0; $i &lt; count($items); $i++) {\n        $value = $callback?-&gt;($items[$i]) ?? $items[$i];\n        if ($preserveKeys) {\n            $result[$i] = $value;\n        } else {\n            $result[] = $value;\n        }\n    }\n    return $result;\n}\n\n\/\/ \u547c\u3073\u51fa\u3057\u4f8b\n$processed = processItems(\n    items: [1, 2, 3, 4],\n    preserveKeys: true,\n    callback: fn($x) =&gt; $x * 2\n);\n\n\/\/ PHP 8\u306ematch\u5f0f\u3092\u4f7f\u3063\u305f\u30eb\u30fc\u30d7\u5185\u306e\u6761\u4ef6\u5206\u5c90\n$values = [1, 2, 'a', 3, null, 4];\n$processed = [];\n\nfor ($i = 0; $i &lt; count($values); $i++) {\n    $processed[] = match(gettype($values[$i])) {\n        'integer' =&gt; $values[$i] * 2,\n        'string' =&gt; strtoupper($values[$i]),\n        'NULL' =&gt; 0,\n        default =&gt; $values[$i]\n    };\n}\n?&gt;\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-28\">JIT\u30b3\u30f3\u30d1\u30a4\u30e9\u3068for\u30eb\u30fc\u30d7\u306e\u95a2\u4fc2<\/h4>\n\n\n\n<p>PHP 8\u3067\u5c0e\u5165\u3055\u308c\u305fJIT\uff08Just-In-Time\uff09\u30b3\u30f3\u30d1\u30a4\u30e9\u306f\u3001\u5b9f\u884c\u6642\u306bPHP\u30b3\u30fc\u30c9\u3092\u30cd\u30a4\u30c6\u30a3\u30d6\u30de\u30b7\u30f3\u30b3\u30fc\u30c9\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u3067\u3001\u7279\u306b\u8a08\u7b97\u96c6\u7d04\u578b\u306e\u51e6\u7406\u3092\u9ad8\u901f\u5316\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=\"\">&lt;?php\n\/\/ JIT\u306e\u6069\u6075\u3092\u53d7\u3051\u3084\u3059\u3044\u6570\u5024\u51e6\u7406\u306efor\u30eb\u30fc\u30d7\nfunction calculatePrimes(int $max): array {\n    $primes = [];\n    for ($i = 2; $i &lt;= $max; $i++) {\n        $isPrime = true;\n        $sqrtI = sqrt($i);\n        for ($j = 2; $j &lt;= $sqrtI; $j++) {\n            if ($i % $j === 0) {\n                $isPrime = false;\n                break;\n            }\n        }\n        if ($isPrime) {\n            $primes[] = $i;\n        }\n    }\n    return $primes;\n}\n\n\/\/ PHP 8.0\u4ee5\u964d\u3067\u306f\u3053\u306e\u95a2\u6570\u304c\u5927\u5e45\u306b\u9ad8\u901f\u5316\u3055\u308c\u308b\n$start = microtime(true);\n$primes = calculatePrimes(10000);\n$end = microtime(true);\necho \"\u51e6\u7406\u6642\u9593: \" . ($end - $start) . \" \u79d2\\n\";\n?&gt;\n<\/pre>\n\n\n\n<p>PHP\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\uff08php.ini\uff09\u3067JIT\u3092\u6709\u52b9\u306b\u3059\u308b\u3053\u3068\u3067\u3001\u3053\u306e\u3088\u3046\u306a\u6570\u5024\u8a08\u7b97\u3092\u591a\u7528\u3059\u308bfor\u30eb\u30fc\u30d7\u3067\u306f5\u301c10\u500d\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a\u304c\u898b\u3089\u308c\u308b\u30b1\u30fc\u30b9\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-29\">\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3068for\u30eb\u30fc\u30d7\u306e\u4f7f\u3044\u5206\u3051<\/h3>\n\n\n\n<p>PHP 5.3\u4ee5\u964d\u3067\u5c0e\u5165\u3055\u308c\u305f\u30af\u30ed\u30fc\u30b8\u30e3\uff08\u7121\u540d\u95a2\u6570\uff09\u3084PHP 7.4\u3067\u5c0e\u5165\u3055\u308c\u305f\u30a2\u30ed\u30fc\u95a2\u6570\u306b\u3088\u308a\u3001\u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u304cPHP\u3067\u3082\u53d6\u308a\u3084\u3059\u304f\u306a\u308a\u307e\u3057\u305f\u3002\u7279\u306b\u914d\u5217\u64cd\u4f5c\u3067\u306f\u3001\u5f93\u6765\u306efor\u30eb\u30fc\u30d7\u306b\u4ee3\u308f\u308b\u9078\u629e\u80a2\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-30\">\u547d\u4ee4\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 vs \u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u547d\u4ee4\u578b\u30a2\u30d7\u30ed\u30fc\u30c1\uff08for\u30eb\u30fc\u30d7\uff09\n$numbers = [1, 2, 3, 4, 5];\n$doubled = [];\nfor ($i = 0; $i &lt; count($numbers); $i++) {\n    $doubled[] = $numbers[$i] * 2;\n}\n\n\/\/ \u95a2\u6570\u578b\u30a2\u30d7\u30ed\u30fc\u30c1\n$numbers = [1, 2, 3, 4, 5];\n$doubled = array_map(fn($n) =&gt; $n * 2, $numbers);\n\n\/\/ \u8907\u96d1\u306a\u51e6\u7406\u306e\u4f8b\n\/\/ for\u30eb\u30fc\u30d7\u3092\u4f7f\u3063\u305f\u547d\u4ee4\u578b\u30a2\u30d7\u30ed\u30fc\u30c1\n$users = [\n    ['name' =&gt; '\u7530\u4e2d', 'age' =&gt; 25, 'active' =&gt; true],\n    ['name' =&gt; '\u9234\u6728', 'age' =&gt; 30, 'active' =&gt; false],\n    ['name' =&gt; '\u4f50\u85e4', 'age' =&gt; 22, 'active' =&gt; true],\n    ['name' =&gt; '\u4f0a\u85e4', 'age' =&gt; 35, 'active' =&gt; true]\n];\n\n$activeUserNames = [];\nfor ($i = 0; $i &lt; count($users); $i++) {\n    if ($users[$i]['active']) {\n        $activeUserNames[] = $users[$i]['name'];\n    }\n}\n\n\/\/ \u95a2\u6570\u578b\u30a2\u30d7\u30ed\u30fc\u30c1\n$activeUserNames = array_map(\n    fn($user) =&gt; $user['name'],\n    array_filter($users, fn($user) =&gt; $user['active'])\n);\n\n\/\/ \u3042\u308b\u3044\u306f\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u7684\u306b\u66f8\u304f\n$activeUserNames = array_values(array_filter(\n    array_column(\n        array_filter($users, fn($user) =&gt; $user['active']),\n        'name'\n    )\n));\n?&gt;\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-31\">\u3069\u3061\u3089\u304c\u9069\u3057\u3066\u3044\u308b\u304b\uff1f<\/h4>\n\n\n<div id=\"id-fd3c5cb6-3ef6-4bf0-bc29-0264ccc795b5\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u72b6\u6cc1<\/th><th>\u63a8\u5968\u30a2\u30d7\u30ed\u30fc\u30c1<\/th><th>\u7406\u7531<\/th><\/tr><\/thead><tbody><tr><td>\u5358\u7d14\u306a\u914d\u5217\u5909\u63db<\/td><td>\u95a2\u6570\u578b\uff08array_map\uff09<\/td><td>\u30b3\u30fc\u30c9\u304c\u7c21\u6f54\u3001\u610f\u56f3\u304c\u660e\u78ba<\/td><\/tr><tr><td>\u8907\u96d1\u306a\u6761\u4ef6\u5206\u5c90<\/td><td>for\u30eb\u30fc\u30d7<\/td><td>\u5236\u5fa1\u30d5\u30ed\u30fc\u304c\u7406\u89e3\u3057\u3084\u3059\u3044<\/td><\/tr><tr><td>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u91cd\u8996<\/td><td>\u72b6\u6cc1\u306b\u3088\u308b<\/td><td>\u30b1\u30fc\u30b9\u30d0\u30a4\u30b1\u30fc\u30b9\u3067\u8a08\u6e2c\u304c\u5fc5\u8981<\/td><\/tr><tr><td>\u5927\u91cf\u30c7\u30fc\u30bf\u51e6\u7406<\/td><td>Generator\u3068for\u30eb\u30fc\u30d7<\/td><td>\u30e1\u30e2\u30ea\u52b9\u7387\u304c\u826f\u3044<\/td><\/tr><tr><td>\u30c1\u30fc\u30e0\u958b\u767a<\/td><td>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u898f\u7d04\u306b\u5f93\u3046<\/td><td>\u4e00\u8cab\u6027\u304c\u91cd\u8981<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-32\">Laravel\u306a\u3069\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u306e\u30eb\u30fc\u30d7\u51e6\u7406\u306e\u5b9f\u88c5\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30e2\u30c0\u30f3\u306aPHP\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u306f\u3001\u72ec\u81ea\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u51e6\u7406\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u591a\u304f\u3001\u5f93\u6765\u306efor\u30eb\u30fc\u30d7\u3088\u308a\u3082\u8868\u73fe\u529b\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u304c\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-33\">Laravel\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3<\/h4>\n\n\n\n<p>Laravel\u306f\u5f37\u529b\u306a\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u30af\u30e9\u30b9\u3092\u63d0\u4f9b\u3057\u3066\u304a\u308a\u3001\u30c7\u30fc\u30bf\u51e6\u7406\u304c\u975e\u5e38\u306b\u76f4\u611f\u7684\u306b\u66f8\u3051\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=\"\">&lt;?php\n\/\/ Laravel\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u4f7f\u3063\u305f\u4f8b\nuse Illuminate\\Support\\Collection;\n\n\/\/ \u5f93\u6765\u306efor\u30eb\u30fc\u30d7\n$numbers = [1, 2, 3, 4, 5];\n$evenSquares = [];\nfor ($i = 0; $i &lt; count($numbers); $i++) {\n    if ($numbers[$i] % 2 === 0) {\n        $evenSquares[] = $numbers[$i] * $numbers[$i];\n    }\n}\n\n\/\/ Laravel\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u4f7f\u3063\u305f\u66f8\u304d\u65b9\n$evenSquares = Collection::make($numbers)\n    -&gt;filter(fn($number) =&gt; $number % 2 === 0)\n    -&gt;map(fn($number) =&gt; $number * $number)\n    -&gt;all();\n\n\/\/ \u3088\u308a\u8907\u96d1\u306a\u4f8b\n$users = [\n    ['name' =&gt; '\u7530\u4e2d', 'age' =&gt; 25, 'role' =&gt; 'admin'],\n    ['name' =&gt; '\u9234\u6728', 'age' =&gt; 30, 'role' =&gt; 'user'],\n    ['name' =&gt; '\u4f50\u85e4', 'age' =&gt; 22, 'role' =&gt; 'editor'],\n    ['name' =&gt; '\u4f0a\u85e4', 'age' =&gt; 35, 'role' =&gt; 'admin']\n];\n\n\/\/ \u7ba1\u7406\u8005\u306e\u540d\u524d\u3068\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u5f97\n$adminContacts = Collection::make($users)\n    -&gt;filter(fn($user) =&gt; $user['role'] === 'admin')\n    -&gt;map(fn($user) =&gt; [\n        'name' =&gt; $user['name'],\n        'email' =&gt; strtolower($user['name']) . '@example.com'\n    ])\n    -&gt;keyBy('name')\n    -&gt;all();\n?&gt;\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-34\">Symfony\u306e\u30a4\u30c6\u30ec\u30fc\u30bf\u3068for\u30eb\u30fc\u30d7<\/h4>\n\n\n\n<p>Symfony\u3067\u3082\u540c\u69d8\u306b\u3001\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u4f7f\u3063\u305f\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u51e6\u7406\u304c\u53ef\u80fd\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\nuse Symfony\\Component\\Finder\\Finder;\n\n\/\/ \u5f93\u6765\u306efor\u30eb\u30fc\u30d7\u3067\u30d5\u30a1\u30a4\u30eb\u691c\u7d22\n$directory = '\/path\/to\/files';\n$matchingFiles = [];\n$files = scandir($directory);\nfor ($i = 0; $i &lt; count($files); $i++) {\n    $file = $files[$i];\n    if ($file !== '.' &amp;&amp; $file !== '..' &amp;&amp; strpos($file, '.php') !== false) {\n        $matchingFiles[] = $directory . '\/' . $file;\n    }\n}\n\n\/\/ Symfony\u306e\u30d5\u30a1\u30a4\u30f3\u30c0\u30fc\u3092\u4f7f\u3063\u305f\u4f8b\n$finder = new Finder();\n$finder-&gt;files()-&gt;in($directory)-&gt;name('*.php');\n\n$matchingFiles = [];\nforeach ($finder as $file) {\n    $matchingFiles[] = $file-&gt;getRealPath();\n}\n\n\/\/ \u3042\u308b\u3044\u306f\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u914d\u5217\u306b\u5909\u63db\n$matchingFiles = iterator_to_array($finder, false);\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-35\">\u5c06\u6765\u7684\u306aPHP\u8a00\u8a9e\u9032\u5316\u3068for\u30eb\u30fc\u30d7\u306e\u4f4d\u7f6e\u3065\u3051<\/h3>\n\n\n\n<p>PHP\u8a00\u8a9e\u306f\u4eca\u5f8c\u3082\u9032\u5316\u3092\u7d9a\u3051\u307e\u3059\u304c\u3001for\u30eb\u30fc\u30d7\u306e\u57fa\u672c\u7684\u306a\u6a5f\u80fd\u306f\u5f15\u304d\u7d9a\u304d\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3059\u3067\u3057\u3087\u3046\u3002\u305f\u3060\u3057\u3001\u3088\u308a\u30e2\u30c0\u30f3\u306a\u4ee3\u66ff\u624b\u6bb5\u3082\u5897\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-36\">PHP\u8a00\u8a9e\u306e\u4eca\u5f8c\u306e\u5c55\u671b<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u578b\u30b7\u30b9\u30c6\u30e0\u306e\u5f37\u5316<\/strong>\uff1a PHP 8\u4ee5\u964d\u3001\u578b\u30b7\u30b9\u30c6\u30e0\u304c\u3055\u3089\u306b\u5f37\u5316\u3055\u308c\u3066\u304a\u308a\u3001\u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u306a\u3069\u306e\u5c0e\u5165\u3082\u691c\u8a0e\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u64cd\u4f5c\u306e\u578b\u5b89\u5168\u6027\u304c\u5411\u4e0a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u5ba3\u8a00\u7684\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u5897\u52a0<\/strong>\uff1a \u95a2\u6570\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u6982\u5ff5\u304c\u53d6\u308a\u5165\u308c\u3089\u308c\u3001\u30eb\u30fc\u30d7\u51e6\u7406\u3082\u5ba3\u8a00\u7684\u306a\u30b9\u30bf\u30a4\u30eb\u304c\u5897\u3048\u3066\u3044\u304f\u3068\u4e88\u60f3\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u6f14\u7b97\u5b50\u306e\u691c\u8a0e<\/strong>\uff1a \u4ed6\u306e\u8a00\u8a9e\u3067\u63a1\u7528\u3055\u308c\u3066\u3044\u308b\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u6f14\u7b97\u5b50\uff08<code>|&gt;<\/code>\uff09\u306e\u3088\u3046\u306a\u3082\u306e\u304cPHP\u306b\u3082\u5c0e\u5165\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u30c7\u30fc\u30bf\u51e6\u7406\u30d5\u30ed\u30fc\u304c\u3088\u308a\u8aad\u307f\u3084\u3059\u304f\u306a\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-37\">for\u30eb\u30fc\u30d7\u306e\u5c06\u6765\u7684\u306a\u4f4d\u7f6e\u3065\u3051<\/h4>\n\n\n\n<p>for\u30eb\u30fc\u30d7\u306f\u57fa\u672c\u7684\u306a\u5236\u5fa1\u69cb\u9020\u3068\u3057\u3066\u4eca\u5f8c\u3082\u6b8b\u308a\u7d9a\u3051\u307e\u3059\u304c\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u9032\u5316\u304c\u4e88\u60f3\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u9ad8\u30ec\u30d9\u30eb\u62bd\u8c61\u5316\u3068\u306e\u4f75\u7528<\/strong>\uff1a \u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3084\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u63d0\u4f9b\u3059\u308b\u9ad8\u30ec\u30d9\u30eb\u306a\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u64cd\u4f5c\u3068\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5fc5\u8981\u306a\u7b87\u6240\u3067\u306efor\u30eb\u30fc\u30d7\u3068\u3044\u3046\u4f7f\u3044\u5206\u3051\u304c\u3088\u308a\u4e00\u822c\u7684\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002<\/li>\n\n\n\n<li><strong>\u7279\u6b8a\u306a\u7528\u9014\u3067\u306e\u6700\u9069\u5316<\/strong>\uff1a \u7279\u306b\u6570\u5024\u8a08\u7b97\u3084\u4f4e\u30ec\u30d9\u30eb\u51e6\u7406\u306a\u3069\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u91cd\u8981\u306a\u9818\u57df\u3067\u306f\u3001\u6700\u9069\u5316\u3055\u308c\u305ffor\u30eb\u30fc\u30d7\u304c\u5f15\u304d\u7d9a\u304d\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u6559\u80b2\u7684\u4fa1\u5024<\/strong>\uff1a \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u57fa\u790e\u6982\u5ff5\u3068\u3057\u3066\u306efor\u30eb\u30fc\u30d7\u306f\u3001\u6559\u80b2\u7684\u4fa1\u5024\u304c\u3042\u308a\u3001\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u7406\u89e3\u3084\u57fa\u672c\u7684\u306a\u5236\u5fa1\u30d5\u30ed\u30fc\u306e\u7fd2\u5f97\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/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=\"\">&lt;?php\n\/\/ \u672a\u6765\u306ePHP\u3067\u60f3\u50cf\u3055\u308c\u308b\u30b3\u30fc\u30c9\u4f8b\uff08\u73fe\u6642\u70b9\u3067\u306f\u52d5\u4f5c\u3057\u307e\u305b\u3093\uff09\n\/\/ \u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u6f14\u7b97\u5b50\u3068\u30b8\u30a7\u30cd\u30ea\u30af\u30b9\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u4f8b\nfunction processData(array&lt;int&gt; $data): array&lt;string&gt; {\n    return $data \n        |&gt; array_filter($, fn($x) =&gt; $x &gt; 0)\n        |&gt; array_map(fn($x) =&gt; $x * 2, $)\n        |&gt; array_map(fn($x) =&gt; \"Value: $x\", $);\n}\n\n\/\/ \u3042\u308b\u3044\u306f\u3001\u62e1\u5f35\u3055\u308c\u305f\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u30af\u30e9\u30b9\u3092\u4f7f\u3063\u305f\u4f8b\n$result = Collection&lt;int&gt;::from([1, 2, 3, 4, 5])\n    -&gt;where(fn($x) =&gt; $x % 2 == 0)\n    -&gt;map(fn($x) =&gt; $x * $x)\n    -&gt;join(', ');\n?&gt;\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-38\">\u30e2\u30c0\u30f3PHP\u306b\u304a\u3051\u308b\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h4>\n\n\n\n<p>\u73fe\u4ee3\u306ePHP\u958b\u767a\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u304c\u4e00\u822c\u7684\u306b\u306a\u308a\u3064\u3064\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u76ee\u7684\u306b\u5fdc\u3058\u305f\u30eb\u30fc\u30d7\u306e\u9078\u629e<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5358\u7d14\u306a\u53cd\u5fa9\u306b\u306f<code>foreach<\/code><\/li>\n\n\n\n<li>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f<code>for<\/code><\/li>\n\n\n\n<li>\u914d\u5217\u5909\u63db\u306b\u306f<code>array_map<\/code>\u3084<code>array_filter<\/code><\/li>\n\n\n\n<li>\u5927\u91cf\u30c7\u30fc\u30bf\u306b\u306f\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3068for\u306e\u7d44\u307f\u5408\u308f\u305b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30e1\u30e2\u30ea\u306e\u8003\u616e<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u51e6\u7406\u3067\u306f\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u6d3b\u7528<\/li>\n\n\n\n<li>\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5fc5\u8981\u306a\u90e8\u5206\u3067\u306f\u6700\u9069\u5316\u3055\u308c\u305ffor\u30eb\u30fc\u30d7<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u8aad\u307f\u3084\u3059\u3055\u306e\u91cd\u8996<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5358\u7d14\u306a\u64cd\u4f5c\u306b\u306f\u95a2\u6570\u578b\u30a2\u30d7\u30ed\u30fc\u30c1<\/li>\n\n\n\n<li>\u8907\u96d1\u306a\u30ed\u30b8\u30c3\u30af\u306b\u306f\u5f93\u6765\u306efor\u30eb\u30fc\u30d7\u3067\u660e\u793a\u7684\u306b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u578b\u306e\u6d3b\u7528<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>PHP 7\/8\u306e\u578b\u30b7\u30b9\u30c6\u30e0\u3092\u6d3b\u7528\u3057\u3066\u5b89\u5168\u6027\u3092\u5411\u4e0a<\/li>\n\n\n\n<li>IDE\u88dc\u5b8c\u3092\u6d3b\u304b\u3057\u305f\u958b\u767a\u52b9\u7387\u306e\u5411\u4e0a<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-39\">\u5b9f\u52d9\u3067\u4f7f\u3048\u308bPHP for\u30eb\u30fc\u30d7\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n\n\n\n<p>\u5b9f\u52d9\u3067PHP\u3092\u4f7f\u3063\u305f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3092\u884c\u3046\u5834\u5408\u3001for\u30eb\u30fc\u30d7\u306f\u983b\u7e41\u306b\u4f7f\u7528\u3059\u308b\u69cb\u6587\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u30d7\u30ed\u30d5\u30a7\u30c3\u30b7\u30e7\u30ca\u30eb\u306aPHP\u958b\u767a\u8005\u3068\u3057\u3066\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u3001for\u30eb\u30fc\u30d7\u306b\u95a2\u3059\u308b\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-40\">\u53ef\u8aad\u6027\u306e\u9ad8\u3044for\u30eb\u30fc\u30d7\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u305f\u3081\u306e\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u898f\u7d04<\/h3>\n\n\n\n<p>\u53ef\u8aad\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u306f\u3001\u30d0\u30b0\u306e\u767a\u898b\u3084\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3092\u5bb9\u6613\u306b\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u3001for\u30eb\u30fc\u30d7\u3092\u66f8\u304f\u969b\u306e\u53ef\u8aad\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306e\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u898f\u7d04\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-41\">1. \u9069\u5207\u306a\u5909\u6570\u547d\u540d<\/h4>\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\/\/ \u60aa\u3044\u4f8b\nfor ($x = 0; $x &lt; count($arr); $x++) {\n    $y = $arr[$x];\n    \/\/ \u51e6\u7406...\n}\n\n\/\/ \u826f\u3044\u4f8b\nfor ($index = 0; $index &lt; count($items); $index++) {\n    $currentItem = $items[$index];\n    \/\/ \u51e6\u7406...\n}\n\n\/\/ \u7279\u5b9a\u306e\u7528\u9014\u306b\u5fdc\u3058\u305f\u5909\u6570\u540d\nfor ($rowIndex = 0; $rowIndex &lt; count($users); $rowIndex++) {\n    $user = $users[$rowIndex];\n    \/\/ \u30e6\u30fc\u30b6\u30fc\u51e6\u7406...\n}\n?&gt;\n<\/pre>\n\n\n\n<p><strong>\u547d\u540d\u898f\u5247\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30a4\u30c6\u30ec\u30fc\u30bf\u5909\u6570<\/strong>: \u5358\u306a\u308b<code>$i<\/code>\u3001<code>$j<\/code>\u3001<code>$k<\/code>\u3067\u306f\u306a\u304f\u3001\u7528\u9014\u3092\u8868\u3059\u540d\u524d\u3092\u4f7f\u3046<\/li>\n\n\n\n<li><strong>\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u540d<\/strong>: \u5358\u6570\u5f62\u3068\u8907\u6570\u5f62\u3092\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u308b\uff08<code>$item<\/code> vs <code>$items<\/code>\uff09<\/li>\n\n\n\n<li><strong>\u76ee\u7684\u306e\u660e\u78ba\u5316<\/strong>: \u5909\u6570\u540d\u304b\u3089\u4f55\u3092\u3057\u3066\u3044\u308b\u306e\u304b\u304c\u5206\u304b\u308b\u3088\u3046\u306b\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-42\">2. \u9069\u5207\u306a\u30a4\u30f3\u30c7\u30f3\u30c8\u3068\u30b9\u30da\u30fc\u30b7\u30f3\u30b0<\/h4>\n\n\n\n<p>PSR-12\u306a\u3069\u306e\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u6a19\u6e96\u306b\u5f93\u3046\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u306e\u4e00\u8cab\u6027\u3068\u53ef\u8aad\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u60aa\u3044\u4f8b\uff08\u30b9\u30da\u30fc\u30b7\u30f3\u30b0\u304c\u4e0d\u7d71\u4e00\uff09\nfor($i=0;$i&lt;count($items);$i++){\n    $sum+=$items[$i];\n}\n\n\/\/ \u826f\u3044\u4f8b\uff08PSR-12\u6e96\u62e0\uff09\nfor ($i = 0; $i &lt; count($items); $i++) {\n    $sum += $items[$i];\n}\n\n\/\/ \u30cd\u30b9\u30c8\u3057\u305f\u30eb\u30fc\u30d7\u306e\u9069\u5207\u306a\u30a4\u30f3\u30c7\u30f3\u30c8\nfor ($i = 0; $i &lt; count($rows); $i++) {\n    for ($j = 0; $j &lt; count($columns); $j++) {\n        $cell = $grid[$i][$j];\n        \/\/ \u30bb\u30eb\u51e6\u7406...\n    }\n}\n?&gt;\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-43\">3. \u9069\u5207\u306a\u30b3\u30e1\u30f3\u30c8<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u76ee\u7684\u3068\u51e6\u7406\u5185\u5bb9\u3092\u8aac\u660e\u3059\u308b\u30b3\u30e1\u30f3\u30c8\n\/\/ \u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u304b\u3089\u6709\u52b9\u306a\u30a2\u30ab\u30a6\u30f3\u30c8\u3060\u3051\u3092\u62bd\u51fa\nfor ($i = 0; $i &lt; count($users); $i++) {\n    \/\/ \u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u6709\u52b9\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\n    if ($users[$i]['status'] === 'active') {\n        $activeUsers[] = $users[$i];\n    }\n}\n\n\/\/ \u8907\u96d1\u306a\u30ed\u30b8\u30c3\u30af\u306b\u306f\u8a73\u7d30\u306a\u30b3\u30e1\u30f3\u30c8\nfor ($i = 0; $i &lt; count($transactions); $i++) {\n    \/\/ \u53d6\u5f15\u984d\u304c10,000\u5186\u4ee5\u4e0a\u3067\u3001\u304b\u3064\u904e\u53bb7\u65e5\u4ee5\u5185\u306e\u5834\u5408\u306f\u76e3\u67fb\u30d5\u30e9\u30b0\u3092\u7acb\u3066\u308b\n    \/\/ \uff08\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u8981\u4ef6 #4-2-1 \u306b\u57fa\u3065\u304f\uff09\n    $amount = $transactions[$i]['amount'];\n    $date = new DateTime($transactions[$i]['date']);\n    $daysDiff = $date-&gt;diff(new DateTime())-&gt;days;\n    \n    if ($amount &gt;= 10000 &amp;&amp; $daysDiff &lt;= 7) {\n        $transactions[$i]['needs_audit'] = true;\n    }\n}\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-44\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c6\u30b9\u30c8\u3067\u5206\u304b\u3063\u305f\u6700\u3082\u52b9\u7387\u7684\u306a\u30eb\u30fc\u30d7\u306e\u66f8\u304d\u65b9<\/h3>\n\n\n\n<p>\u5b9f\u969b\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c6\u30b9\u30c8\u306b\u57fa\u3065\u3044\u305f\u3001\u6700\u3082\u52b9\u7387\u7684\u306afor\u30eb\u30fc\u30d7\u306e\u66f8\u304d\u65b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-45\">1. \u914d\u5217\u306e\u9577\u3055\u3092\u4e8b\u524d\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b<\/h4>\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$largeArray = range(1, 10000);\n\n\/\/ \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c6\u30b9\u30c8\u7d50\u679c\n\/\/ \u30c6\u30b9\u30c8\u74b0\u5883: PHP 7.4, \u30e1\u30e2\u30ea: 512MB\n\n\/\/ \u9045\u3044\u65b9\u6cd5\uff08\u6bce\u56decount()\u3092\u5b9f\u884c\uff09\n$startTime = microtime(true);\n$sum = 0;\nfor ($i = 0; $i &lt; count($largeArray); $i++) {\n    $sum += $largeArray[$i];\n}\n$endTime = microtime(true);\necho \"count()\u3092\u6bce\u56de\u5b9f\u884c: \" . ($endTime - $startTime) . \" \u79d2&lt;br&gt;\";\n\n\/\/ \u901f\u3044\u65b9\u6cd5\uff08count()\u30921\u56de\u3060\u3051\u5b9f\u884c\uff09\n$startTime = microtime(true);\n$sum = 0;\n$count = count($largeArray);\nfor ($i = 0; $i &lt; $count; $i++) {\n    $sum += $largeArray[$i];\n}\n$endTime = microtime(true);\necho \"count()\u30921\u56de\u3060\u3051\u5b9f\u884c: \" . ($endTime - $startTime) . \" \u79d2&lt;br&gt;\";\n?&gt;\n<\/pre>\n\n\n\n<p><strong>\u30c6\u30b9\u30c8\u7d50\u679c\uff08\u4f8b\uff09:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>count()\u3092\u6bce\u56de\u5b9f\u884c: 0.0148\u79d2<\/li>\n\n\n\n<li>count()\u30921\u56de\u3060\u3051\u5b9f\u884c: 0.0023\u79d2 (\u7d046.4\u500d\u9ad8\u901f)<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-46\">2. \u6761\u4ef6\u5224\u5b9a\u306e\u6700\u9069\u5316<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u914d\u5217\u5185\u306e\u7279\u5b9a\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u8981\u7d20\u3092\u898b\u3064\u3051\u308b\n\n$items = range(1, 10000);\n\n\/\/ \u9045\u3044\u65b9\u6cd5\uff08\u8907\u96d1\u306a\u6761\u4ef6\u3092\u6bce\u56de\u8a08\u7b97\uff09\n$startTime = microtime(true);\n$matches = [];\nfor ($i = 0; $i &lt; count($items); $i++) {\n    if ($items[$i] % 3 == 0 &amp;&amp; $items[$i] % 5 == 0 &amp;&amp; $items[$i] &gt; 1000) {\n        $matches[] = $items[$i];\n    }\n}\n$endTime = microtime(true);\necho \"\u6761\u4ef6\u3092\u6bce\u56de\u8a08\u7b97: \" . ($endTime - $startTime) . \" \u79d2&lt;br&gt;\";\n\n\/\/ \u901f\u3044\u65b9\u6cd5\uff08\u6761\u4ef6\u306e\u9806\u5e8f\u3092\u6700\u9069\u5316\uff09\n$startTime = microtime(true);\n$matches = [];\n$count = count($items);\nfor ($i = 0; $i &lt; $count; $i++) {\n    \/\/ \u6700\u3082\u8a08\u7b97\u30b3\u30b9\u30c8\u304c\u4f4e\u3044\u6761\u4ef6\u3092\u5148\u306b\u3001\u6700\u3082\u9664\u5916\u3067\u304d\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u6761\u4ef6\u3092\u5148\u306b\n    if ($items[$i] &gt; 1000 &amp;&amp; $items[$i] % 3 == 0 &amp;&amp; $items[$i] % 5 == 0) {\n        $matches[] = $items[$i];\n    }\n}\n$endTime = microtime(true);\necho \"\u6761\u4ef6\u306e\u9806\u5e8f\u3092\u6700\u9069\u5316: \" . ($endTime - $startTime) . \" \u79d2&lt;br&gt;\";\n?&gt;\n<\/pre>\n\n\n\n<p><strong>\u6761\u4ef6\u6700\u9069\u5316\u306e\u30dd\u30a4\u30f3\u30c8:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8a08\u7b97\u30b3\u30b9\u30c8\u304c\u4f4e\u3044\u6761\u4ef6\u3092\u5148\u306b\u8a55\u4fa1\u3059\u308b\uff08<code>$i &gt; 1000<\/code>\u306f\u9664\u7b97\u3088\u308a\u9ad8\u901f\uff09<\/li>\n\n\n\n<li>false \u306b\u306a\u308b\u78ba\u7387\u304c\u9ad8\u3044\u6761\u4ef6\u3092\u5148\u306b\u8a55\u4fa1\u3059\u308b\uff08\u77ed\u7d61\u8a55\u4fa1\u3092\u6d3b\u7528\uff09<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u7279\u6027\u306b\u5408\u308f\u305b\u3066\u6761\u4ef6\u306e\u9806\u5e8f\u3092\u8abf\u6574\u3059\u308b<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-47\">3. \u914d\u5217\u64cd\u4f5c\u306e\u6700\u9069\u5316<\/h4>\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\u304d\u306a\u914d\u5217\u3092\u69cb\u7bc9\u3059\u308b\u3068\u304d\n\n\/\/ \u9045\u3044\u65b9\u6cd5\uff08\u30b5\u30a4\u30ba\u8abf\u6574\u304c\u591a\u767a\uff09\n$startTime = microtime(true);\n$result = [];\nfor ($i = 0; $i &lt; 100000; $i++) {\n    $result[] = $i; \/\/ \u914d\u5217\u30b5\u30a4\u30ba\u304c\u52d5\u7684\u306b\u8abf\u6574\u3055\u308c\u308b\n}\n$endTime = microtime(true);\necho \"\u52d5\u7684\u914d\u5217\u69cb\u7bc9: \" . ($endTime - $startTime) . \" \u79d2&lt;br&gt;\";\n\n\/\/ \u901f\u3044\u65b9\u6cd5\uff08\u4e8b\u524d\u306b\u30b5\u30a4\u30ba\u3092\u78ba\u4fdd\uff09\n$startTime = microtime(true);\n$result = array_fill(0, 100000, null); \/\/ \u4e8b\u524d\u306b\u914d\u5217\u30b5\u30a4\u30ba\u3092\u78ba\u4fdd\nfor ($i = 0; $i &lt; 100000; $i++) {\n    $result[$i] = $i; \/\/ \u65e2\u5b58\u306e\u8981\u7d20\u306b\u4ee3\u5165\n}\n$endTime = microtime(true);\necho \"\u4e8b\u524d\u30b5\u30a4\u30ba\u78ba\u4fdd: \" . ($endTime - $startTime) . \" \u79d2&lt;br&gt;\";\n?&gt;\n<\/pre>\n\n\n\n<p><strong>\u6700\u9069\u5316\u306e\u30dd\u30a4\u30f3\u30c8:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8981\u7d20\u6570\u304c\u4e8b\u524d\u306b\u5206\u304b\u3063\u3066\u3044\u308b\u5834\u5408\u306f\u3001<code>array_fill()<\/code>\u3067\u914d\u5217\u3092\u521d\u671f\u5316<\/li>\n\n\n\n<li>\u983b\u7e41\u306a\u914d\u5217\u64cd\u4f5c\u3092\u884c\u3046\u5834\u5408\u306f\u3001SplFixedArray\u306e\u4f7f\u7528\u3082\u691c\u8a0e<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-48\">\u30c7\u30d0\u30c3\u30b0\u304c\u3057\u3084\u3059\u3044for\u30eb\u30fc\u30d7\u306e\u69cb\u9020\u3068\u547d\u540d\u898f\u5247<\/h3>\n\n\n\n<p>\u30c7\u30d0\u30c3\u30b0\u306f\u958b\u767a\u306e\u91cd\u8981\u306a\u90e8\u5206\u3067\u3059\u3002\u30c7\u30d0\u30c3\u30b0\u3057\u3084\u3059\u3044for\u30eb\u30fc\u30d7\u3092\u66f8\u304f\u305f\u3081\u306e\u69cb\u9020\u3068\u547d\u540d\u898f\u5247\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-49\">1. \u9032\u6357\u72b6\u6cc1\u306e\u53ef\u8996\u5316<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ \u9577\u6642\u9593\u5b9f\u884c\u3055\u308c\u308b\u51e6\u7406\u306e\u9032\u6357\u72b6\u6cc1\u3092\u8868\u793a\n$totalItems = count($largeDataset);\nfor ($i = 0; $i &lt; $totalItems; $i++) {\n    \/\/ \u672c\u6765\u306e\u51e6\u7406\n    processItem($largeDataset[$i]);\n    \n    \/\/ \u9032\u6357\u72b6\u6cc1\u306e\u8868\u793a\uff08100\u30a2\u30a4\u30c6\u30e0\u3054\u3068\uff09\n    if ($i % 100 === 0 || $i === $totalItems - 1) {\n        $progress = round(($i + 1) \/ $totalItems * 100, 1);\n        echo \"\u51e6\u7406\u4e2d... {$progress}% \u5b8c\u4e86 ({$i} \/ {$totalItems})&lt;br&gt;\";\n        \n        \/\/ \u51fa\u529b\u30d0\u30c3\u30d5\u30a1\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\u3057\u3066\u5373\u6642\u8868\u793a\n        if (ob_get_level() &gt; 0) {\n            ob_flush();\n            flush();\n        }\n    }\n}\n?&gt;\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-50\">2. \u6bb5\u968e\u7684\u306a\u30c7\u30d0\u30c3\u30b0<\/h4>\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\/\/ \u30c7\u30d0\u30c3\u30b0\u60c5\u5831\u3092\u968e\u5c64\u7684\u306b\u8868\u793a\nfunction processOrders($orders, $debug = false) {\n    $totalOrders = count($orders);\n    $processedCount = 0;\n    $errorCount = 0;\n    \n    for ($i = 0; $i &lt; $totalOrders; $i++) {\n        $order = $orders[$i];\n        \n        \/\/ \u8a73\u7d30\u306a\u30c7\u30d0\u30c3\u30b0\u60c5\u5831\n        if ($debug) {\n            echo \"\u51e6\u7406\u4e2d\u306e\u6ce8\u6587 ID: {$order['id']} ({$i} \/ {$totalOrders})&lt;br&gt;\";\n        }\n        \n        try {\n            \/\/ \u6ce8\u6587\u51e6\u7406\n            $result = processOrder($order);\n            $processedCount++;\n            \n            \/\/ \u8a73\u7d30\u306a\u30c7\u30d0\u30c3\u30b0\u60c5\u5831\n            if ($debug) {\n                echo \"  \u7d50\u679c: \" . ($result ? '\u6210\u529f' : '\u5931\u6557') . \"&lt;br&gt;\";\n            }\n        } catch (Exception $e) {\n            $errorCount++;\n            \/\/ \u30a8\u30e9\u30fc\u60c5\u5831\u306f\u5e38\u306b\u8868\u793a\n            echo \"\u30a8\u30e9\u30fc (\u6ce8\u6587 ID: {$order['id']}): \" . $e-&gt;getMessage() . \"&lt;br&gt;\";\n        }\n    }\n    \n    \/\/ \u51e6\u7406\u7d50\u679c\u306e\u30b5\u30de\u30ea\u30fc\n    return [\n        'total' =&gt; $totalOrders,\n        'processed' =&gt; $processedCount,\n        'errors' =&gt; $errorCount\n    ];\n}\n?&gt;\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-51\">3. \u5883\u754c\u6761\u4ef6\u306e\u30c6\u30b9\u30c8<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\nfunction searchInArray($needle, $haystack) {\n    $count = count($haystack);\n    \n    \/\/ \u7a7a\u306e\u914d\u5217\u30c1\u30a7\u30c3\u30af\n    if ($count === 0) {\n        return -1; \/\/ \u898b\u3064\u304b\u3089\u306a\u3044\n    }\n    \n    for ($i = 0; $i &lt; $count; $i++) {\n        \/\/ \u5883\u754c\u6761\u4ef6\u306e\u30c7\u30d0\u30c3\u30b0\u60c5\u5831\n        $isFirst = ($i === 0);\n        $isLast = ($i === $count - 1);\n        \n        if ($isFirst || $isLast) {\n            echo \"\u5883\u754c\u5024\u30c1\u30a7\u30c3\u30af: \u30a4\u30f3\u30c7\u30c3\u30af\u30b9 {$i}, \u5024: {$haystack[$i]}, \";\n            echo $isFirst ? \"\uff08\u5148\u982d\u8981\u7d20\uff09\" : \"\uff08\u6700\u7d42\u8981\u7d20\uff09\";\n            echo \"&lt;br&gt;\";\n        }\n        \n        \/\/ \u5b9f\u969b\u306e\u691c\u7d22\u51e6\u7406\n        if ($haystack[$i] === $needle) {\n            return $i; \/\/ \u898b\u3064\u304b\u3063\u305f\u4f4d\u7f6e\u3092\u8fd4\u3059\n        }\n    }\n    \n    return -1; \/\/ \u898b\u3064\u304b\u3089\u306a\u3044\n}\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-52\">\u30c1\u30fc\u30e0\u958b\u767a\u306b\u304a\u3051\u308bfor\u30eb\u30fc\u30d7\u30b3\u30fc\u30c9\u306e\u30ec\u30d3\u30e5\u30fc\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<p>\u30c1\u30fc\u30e0\u958b\u767a\u3067\u306f\u3001\u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc\u304c\u30b3\u30fc\u30c9\u54c1\u8cea\u3092\u7dad\u6301\u3059\u308b\u91cd\u8981\u306a\u624b\u6bb5\u3067\u3059\u3002\u4ee5\u4e0b\u306f\u3001for\u30eb\u30fc\u30d7\u306b\u95a2\u3059\u308b\u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc\u306e\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-53\">1. \u30ec\u30d3\u30e5\u30fc\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h4>\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=\"\">\u25a1 \u5909\u6570\u540d\u306f\u76ee\u7684\u3092\u8868\u3057\u3066\u3044\u3066\u7406\u89e3\u3057\u3084\u3059\u3044\u304b\n\u25a1 \u30eb\u30fc\u30d7\u306e\u7d42\u4e86\u6761\u4ef6\u306f\u660e\u78ba\u304b\n\u25a1 \u5883\u754c\u6761\u4ef6\uff08\u7a7a\u914d\u5217\u30011\u8981\u7d20\u306e\u307f\u306a\u3069\uff09\u306f\u6b63\u3057\u304f\u51e6\u7406\u3055\u308c\u3066\u3044\u308b\u304b\n\u25a1 \u4e0d\u8981\u306a\u8a08\u7b97\u304c\u7e70\u308a\u8fd4\u3055\u308c\u3066\u3044\u306a\u3044\u304b\n\u25a1 \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u306b\u306a\u308b\u53ef\u80fd\u6027\u306f\u306a\u3044\u304b\n\u25a1 \u7121\u9650\u30eb\u30fc\u30d7\u306e\u53ef\u80fd\u6027\u306f\u306a\u3044\u304b\n\u25a1 \u30a8\u30e9\u30fc\u51e6\u7406\u306f\u9069\u5207\u304b\n\u25a1 \u30cd\u30b9\u30c8\u3057\u305f\u30eb\u30fc\u30d7\u306f\u9069\u5207\u306b\u69cb\u9020\u5316\u3055\u308c\u3066\u3044\u308b\u304b\n\u25a1 \u30b3\u30e1\u30f3\u30c8\u306f\u5341\u5206\u3067\u5206\u304b\u308a\u3084\u3059\u3044\u304b\n\u25a1 \u30eb\u30fc\u30d7\u5185\u3067\u30e1\u30e2\u30ea\u30ea\u30fc\u30af\u306e\u53ef\u80fd\u6027\u306f\u306a\u3044\u304b\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-54\">2. \u5178\u578b\u7684\u306a\u30ec\u30d3\u30e5\u30fc\u30b3\u30e1\u30f3\u30c8\u3068\u305d\u306e\u89e3\u6c7a\u7b56<\/h4>\n\n\n<div id=\"id-5a644971-c483-4f64-8efb-4156695ecc04\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30ec\u30d3\u30e5\u30fc\u30b3\u30e1\u30f3\u30c8<\/th><th>\u554f\u984c<\/th><th>\u89e3\u6c7a\u7b56<\/th><\/tr><\/thead><tbody><tr><td>\u201ccount()\u3092\u7e70\u308a\u8fd4\u3057\u547c\u3093\u3067\u3044\u308b\u201d<\/td><td>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u4f4e\u4e0b<\/td><td>\u30eb\u30fc\u30d7\u524d\u306b\u5909\u6570\u306b\u30ad\u30e3\u30c3\u30b7\u30e5<\/td><\/tr><tr><td>\u201c\u5909\u6570\u540d$i\u304c\u4f55\u3092\u8868\u3057\u3066\u3044\u308b\u304b\u4e0d\u660e\u78ba\u201d<\/td><td>\u53ef\u8aad\u6027\u306e\u554f\u984c<\/td><td>\u610f\u5473\u306e\u3042\u308b\u5909\u6570\u540d\u306b\u5909\u66f4<\/td><\/tr><tr><td>\u201c\u5883\u754c\u6761\u4ef6\u306e\u30c1\u30a7\u30c3\u30af\u304c\u306a\u3044\u201d<\/td><td>\u30d0\u30b0\u306e\u53ef\u80fd\u6027<\/td><td>\u7a7a\u914d\u5217\u30841\u8981\u7d20\u306e\u5834\u5408\u306e\u51e6\u7406\u3092\u8ffd\u52a0<\/td><\/tr><tr><td>\u201c\u30eb\u30fc\u30d7\u5185\u3067\u540c\u3058\u8a08\u7b97\u3092\u7e70\u308a\u8fd4\u3057\u3066\u3044\u308b\u201d<\/td><td>\u975e\u52b9\u7387<\/td><td>\u30eb\u30fc\u30d7\u5916\u3067\u4e00\u5ea6\u3060\u3051\u8a08\u7b97<\/td><\/tr><tr><td>\u201c\u30cd\u30b9\u30c8\u304c\u6df1\u3059\u304e\u308b\u201d<\/td><td>\u53ef\u8aad\u6027\u30fb\u4fdd\u5b88\u6027\u306e\u554f\u984c<\/td><td>\u95a2\u6570\u306b\u5206\u5272\u3059\u308b\u304b\u3001\u65e9\u671freturn\u3092\u691c\u8a0e<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h4 class=\"wp-block-heading\" id=\"i-55\">3. \u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc\u4f8b<\/h4>\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\/\/ \u30ec\u30d3\u30e5\u30fc\u524d\u306e\u30b3\u30fc\u30c9\nfunction findProducts($products, $category) {\n    $results = [];\n    for ($i = 0; $i &lt; count($products); $i++) {\n        if ($products[$i]['category'] == $category) {\n            $results[] = $products[$i];\n        }\n    }\n    return $results;\n}\n\n\/\/ \u30ec\u30d3\u30e5\u30fc\u5f8c\u306e\u6539\u5584\u30b3\u30fc\u30c9\n\/**\n * \u7279\u5b9a\u30ab\u30c6\u30b4\u30ea\u306e\u5546\u54c1\u3092\u691c\u7d22\u3059\u308b\n * \n * @param array $products \u5546\u54c1\u30ea\u30b9\u30c8\n * @param string $category \u691c\u7d22\u3059\u308b\u30ab\u30c6\u30b4\u30ea\n * @return array \u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u5546\u54c1\u306e\u914d\u5217\n *\/\nfunction findProductsByCategory(array $products, string $category): array {\n    \/\/ \u65e9\u671f\u30ea\u30bf\u30fc\u30f3\u3067\u5883\u754c\u6761\u4ef6\u3092\u30c1\u30a7\u30c3\u30af\n    if (empty($products)) {\n        return [];\n    }\n    \n    $results = [];\n    $productCount = count($products);\n    \n    for ($productIndex = 0; $productIndex &lt; $productCount; $productIndex++) {\n        $currentProduct = $products[$productIndex];\n        \n        if ($currentProduct['category'] === $category) {\n            $results[] = $currentProduct;\n        }\n    }\n    \n    return $results;\n}\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-56\">\u5b9f\u969b\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u57fa\u3065\u304f\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h3>\n\n\n\n<p>\u5b9f\u969b\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3067\u3088\u304f\u4f7f\u308f\u308c\u308bfor\u30eb\u30fc\u30d7\u306e\u30d1\u30bf\u30fc\u30f3\u3068\u3001\u305d\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-57\">1. \u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u51e6\u7406<\/h4>\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\/**\n * \u914d\u5217\u30c7\u30fc\u30bf\u306e\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u51e6\u7406\n * \n * @param array $items \u5168\u30a2\u30a4\u30c6\u30e0\n * @param int $currentPage \u73fe\u5728\u306e\u30da\u30fc\u30b8\u756a\u53f7\uff081\u304b\u3089\u958b\u59cb\uff09\n * @param int $perPage 1\u30da\u30fc\u30b8\u3042\u305f\u308a\u306e\u30a2\u30a4\u30c6\u30e0\u6570\n * @return array \u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u60c5\u5831\u3068\u73fe\u5728\u30da\u30fc\u30b8\u306e\u30a2\u30a4\u30c6\u30e0\n *\/\nfunction paginateItems(array $items, int $currentPage = 1, int $perPage = 10): array {\n    $totalItems = count($items);\n    $totalPages = ceil($totalItems \/ $perPage);\n    \n    \/\/ \u30da\u30fc\u30b8\u756a\u53f7\u306e\u6b63\u898f\u5316\n    $currentPage = max(1, min($currentPage, $totalPages));\n    \n    \/\/ \u73fe\u5728\u30da\u30fc\u30b8\u306e\u30a2\u30a4\u30c6\u30e0\u3092\u53d6\u5f97\n    $offset = ($currentPage - 1) * $perPage;\n    $currentItems = array_slice($items, $offset, $perPage);\n    \n    \/\/ \u30da\u30fc\u30b8\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u7528\u306e\u7bc4\u56f2\u3092\u8a08\u7b97\n    $pageRange = [];\n    $rangeSize = 5; \/\/ \u8868\u793a\u3059\u308b\u30da\u30fc\u30b8\u30ea\u30f3\u30af\u306e\u6570\n    \n    $startPage = max(1, $currentPage - floor($rangeSize \/ 2));\n    $endPage = min($totalPages, $startPage + $rangeSize - 1);\n    \n    \/\/ \u30da\u30fc\u30b8\u756a\u53f7\u3092\u751f\u6210\n    for ($i = $startPage; $i &lt;= $endPage; $i++) {\n        $pageRange[] = $i;\n    }\n    \n    return [\n        'items' =&gt; $currentItems,\n        'current_page' =&gt; $currentPage,\n        'per_page' =&gt; $perPage,\n        'total_items' =&gt; $totalItems,\n        'total_pages' =&gt; $totalPages,\n        'page_range' =&gt; $pageRange,\n        'has_previous' =&gt; ($currentPage &gt; 1),\n        'has_next' =&gt; ($currentPage &lt; $totalPages)\n    ];\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$allProducts = fetchAllProducts(); \/\/ \u5168\u5546\u54c1\u3092\u53d6\u5f97\n$page = $_GET['page'] ?? 1;\n$pagination = paginateItems($allProducts, (int)$page, 20);\n\n\/\/ \u73fe\u5728\u30da\u30fc\u30b8\u306e\u5546\u54c1\u3092\u8868\u793a\nforeach ($pagination['items'] as $product) {\n    echo $product['name'] . \"&lt;br&gt;\";\n}\n\n\/\/ \u30da\u30fc\u30b8\u30e3\u30fc\u3092\u8868\u793a\necho \"\u30da\u30fc\u30b8: \";\nif ($pagination['has_previous']) {\n    echo \"&lt;a href='?page=\" . ($pagination['current_page'] - 1) . \"'&gt;\u524d\u3078&lt;\/a&gt; \";\n}\n\nforeach ($pagination['page_range'] as $pageNum) {\n    if ($pageNum == $pagination['current_page']) {\n        echo \"&lt;strong&gt;{$pageNum}&lt;\/strong&gt; \";\n    } else {\n        echo \"&lt;a href='?page={$pageNum}'&gt;{$pageNum}&lt;\/a&gt; \";\n    }\n}\n\nif ($pagination['has_next']) {\n    echo \"&lt;a href='?page=\" . ($pagination['current_page'] + 1) . \"'&gt;\u6b21\u3078&lt;\/a&gt;\";\n}\n?&gt;\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-58\">2. \u968e\u5c64\u69cb\u9020\u306e\u51e6\u7406\uff08\u518d\u5e30\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\uff09<\/h4>\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\/**\n * \u968e\u5c64\u7684\u306a\u30ab\u30c6\u30b4\u30ea\u69cb\u9020\u3092HTML\u5f62\u5f0f\u3067\u51fa\u529b\n * \n * @param array $categories \u30ab\u30c6\u30b4\u30ea\u306e\u914d\u5217\n * @param int $parentId \u89aa\u30ab\u30c6\u30b4\u30eaID\n * @param int $level \u73fe\u5728\u306e\u968e\u5c64\u30ec\u30d9\u30eb\n * @return string HTML\u30de\u30fc\u30af\u30a2\u30c3\u30d7\n *\/\nfunction renderCategoryTree(array $categories, int $parentId = 0, int $level = 0): string {\n    $html = '';\n    \n    \/\/ \u30a4\u30f3\u30c7\u30f3\u30c8\u3092\u751f\u6210\n    $indent = str_repeat('  ', $level);\n    \n    \/\/ \u5b50\u30ab\u30c6\u30b4\u30ea\u3092\u898b\u3064\u3051\u308b\n    $children = [];\n    $categoryCount = count($categories);\n    \n    for ($i = 0; $i &lt; $categoryCount; $i++) {\n        if ($categories[$i]['parent_id'] === $parentId) {\n            $children[] = $categories[$i];\n        }\n    }\n    \n    \/\/ \u5b50\u30ab\u30c6\u30b4\u30ea\u304c\u3042\u308b\u5834\u5408\u3001UL\u30ea\u30b9\u30c8\u3092\u958b\u59cb\n    if (!empty($children)) {\n        $html .= $indent . \"&lt;ul&gt;\\n\";\n        \n        \/\/ \u5404\u5b50\u30ab\u30c6\u30b4\u30ea\u3092\u51e6\u7406\n        $childCount = count($children);\n        for ($i = 0; $i &lt; $childCount; $i++) {\n            $child = $children[$i];\n            \n            $html .= $indent . \"  &lt;li&gt;\\n\";\n            $html .= $indent . \"    \" . htmlspecialchars($child['name']) . \"\\n\";\n            \n            \/\/ \u518d\u5e30\u7684\u306b\u5b50\u30ab\u30c6\u30b4\u30ea\u306e\u5b50\u3092\u51e6\u7406\n            $html .= renderCategoryTree($categories, $child['id'], $level + 1);\n            \n            $html .= $indent . \"  &lt;\/li&gt;\\n\";\n        }\n        \n        $html .= $indent . \"&lt;\/ul&gt;\\n\";\n    }\n    \n    return $html;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$categories = [\n    ['id' =&gt; 1, 'name' =&gt; '\u96fb\u5b50\u6a5f\u5668', 'parent_id' =&gt; 0],\n    ['id' =&gt; 2, 'name' =&gt; '\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3', 'parent_id' =&gt; 1],\n    ['id' =&gt; 3, 'name' =&gt; '\u30ce\u30fc\u30c8PC', 'parent_id' =&gt; 1],\n    ['id' =&gt; 4, 'name' =&gt; '\u8863\u985e', 'parent_id' =&gt; 0],\n    ['id' =&gt; 5, 'name' =&gt; '\u30e1\u30f3\u30ba', 'parent_id' =&gt; 4],\n    ['id' =&gt; 6, 'name' =&gt; '\u30ec\u30c7\u30a3\u30fc\u30b9', 'parent_id' =&gt; 4],\n    ['id' =&gt; 7, 'name' =&gt; 'T\u30b7\u30e3\u30c4', 'parent_id' =&gt; 5],\n    ['id' =&gt; 8, 'name' =&gt; '\u30b8\u30fc\u30f3\u30ba', 'parent_id' =&gt; 5],\n];\n\necho renderCategoryTree($categories);\n?&gt;\n<\/pre>\n\n\n\n<p>PHP\u306efor\u30eb\u30fc\u30d7\u306f\u3001\u9069\u5207\u306a\u4f7f\u3044\u65b9\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u304b\u3064\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3057\u3084\u3059\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u7d39\u4ecb\u3057\u305f\u6280\u8853\u3092\u5b9f\u8df5\u3059\u308b\u3053\u3068\u3067\u3001\u30d7\u30ed\u30d5\u30a7\u30c3\u30b7\u30e7\u30ca\u30eb\u306aPHP\u30a8\u30f3\u30b8\u30cb\u30a2\u3068\u3057\u3066\u306e\u30b9\u30ad\u30eb\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-59\">\u307e\u3068\u3081\uff1aPHP for\u30eb\u30fc\u30d7\u3092\u4f7f\u3044\u3053\u306a\u3057\u3066\u52b9\u7387\u7684\u306a\u958b\u767a\u3092\u5b9f\u73fe\u3057\u3088\u3046<\/h2>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001PHP\u306efor\u30eb\u30fc\u30d7\u306b\u3064\u3044\u3066\u57fa\u790e\u304b\u3089\u5fdc\u7528\u307e\u3067\u5e45\u5e83\u304f\u89e3\u8aac\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u521d\u5fc3\u8005\u304b\u3089\u4e0a\u7d1a\u8005\u307e\u3067\u3001\u305d\u308c\u305e\u308c\u306e\u30ec\u30d9\u30eb\u306b\u5fdc\u3058\u305f\u77e5\u8b58\u3068\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\u3057\u307e\u3057\u305f\u304c\u3001\u3053\u3053\u3067\u6539\u3081\u3066\u5b66\u3093\u3060\u3053\u3068\u3092\u632f\u308a\u8fd4\u308a\u3001\u4eca\u5f8c\u306e\u5b66\u7fd2\u3084\u5b9f\u8df5\u306b\u5f79\u7acb\u3066\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-60\">\u5b66\u3093\u30607\u3064\u306e\u30c6\u30af\u30cb\u30c3\u30af\u306e\u632f\u308a\u8fd4\u308a\u3068\u5b9f\u8df5\u3078\u306e\u30b9\u30c6\u30c3\u30d7<\/h3>\n\n\n\n<p>\u672c\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u305f7\u3064\u306e\u4e3b\u8981\u30c6\u30af\u30cb\u30c3\u30af\u3092\u632f\u308a\u8fd4\u308a\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u8907\u6570\u306e\u521d\u671f\u5316\u5f0f\u3068\u5897\u5206\u5f0f\u306e\u6d3b\u7528<\/strong>: \u30ab\u30f3\u30de\u3092\u4f7f\u3063\u3066\u8907\u6570\u306e\u5909\u6570\u3092\u540c\u6642\u306b\u5236\u5fa1\u3059\u308b\u3053\u3068\u3067\u3001\u95a2\u9023\u3059\u308b\u5909\u6570\u306e\u64cd\u4f5c\u304c\u30b7\u30f3\u30d7\u30eb\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30ab\u30a6\u30f3\u30bf\u5909\u6570\u306e\u52b9\u7387\u7684\u306a\u64cd\u4f5c<\/strong>: \u5897\u6e1b\u306e\u30b9\u30c6\u30c3\u30d7\u3092\u5909\u66f4\u3057\u305f\u308a\u3001\u5897\u5206\u5f0f\u3092\u5de5\u592b\u3059\u308b\u3053\u3068\u3067\u3001\u7279\u5b9a\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u306e\u7e70\u308a\u8fd4\u3057\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30cd\u30b9\u30c8\u3057\u305ffor\u30eb\u30fc\u30d7\u3067\u306e\u591a\u6b21\u5143\u914d\u5217\u51e6\u7406<\/strong>: \u5165\u308c\u5b50\u306b\u306a\u3063\u305ffor\u30eb\u30fc\u30d7\u3092\u4f7f\u3063\u3066\u3001\u591a\u6b21\u5143\u30c7\u30fc\u30bf\u69cb\u9020\u3084\u884c\u5217\u306e\u64cd\u4f5c\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u6761\u4ef6\u5f0f\u3092\u5de5\u592b\u3057\u305f\u7279\u5b9a\u8981\u7d20\u306e\u51e6\u7406<\/strong>: \u8907\u96d1\u306a\u6761\u4ef6\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u7279\u5b9a\u306e\u8981\u7d20\u3060\u3051\u3092\u9078\u629e\u7684\u306b\u51e6\u7406\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>break\/continue\u6587\u3092\u4f7f\u3063\u305f\u5236\u5fa1\u30d5\u30ed\u30fc<\/strong>: \u30eb\u30fc\u30d7\u306e\u65e9\u671f\u7d42\u4e86\u3084\u30b9\u30ad\u30c3\u30d7\u306b\u3088\u3063\u3066\u3001\u51e6\u7406\u306e\u52b9\u7387\u5316\u3084\u7279\u6b8a\u30b1\u30fc\u30b9\u306e\u5bfe\u5fdc\u304c\u53ef\u80fd\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>for\u30eb\u30fc\u30d7\u5185\u3067\u306e\u95a2\u6570\u6d3b\u7528<\/strong>: \u95a2\u6570\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u51e6\u7406\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u5316\u3084\u518d\u5229\u7528\u6027\u3092\u9ad8\u3081\u3089\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u610f\u8b58\u3057\u305f\u6700\u9069\u5316<\/strong>: \u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3084\u5b9f\u884c\u901f\u5ea6\u3092\u8003\u616e\u3057\u305f\u5b9f\u88c5\u306b\u3088\u308a\u3001\u52b9\u7387\u7684\u306a\u51e6\u7406\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u5b9f\u8df5\u306b\u6d3b\u304b\u3059\u305f\u3081\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u3092\u7406\u89e3\u3059\u308b<\/strong>: for\u30eb\u30fc\u30d7\u306e\u69cb\u6587\u3068\u52d5\u4f5c\u539f\u7406\u3092\u3057\u3063\u304b\u308a\u7406\u89e3\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n\n\n\n<li><strong>\u5c0f\u3055\u304f\u59cb\u3081\u308b<\/strong>: \u30b7\u30f3\u30d7\u30eb\u306a\u4f8b\u304b\u3089\u59cb\u3081\u3066\u3001\u5f90\u3005\u306b\u8907\u96d1\u306a\u51e6\u7406\u306b\u30c1\u30e3\u30ec\u30f3\u30b8\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n\n\n\n<li><strong>\u5b9f\u969b\u306b\u8a66\u3059<\/strong>: \u3053\u306e\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u305f\u30b3\u30fc\u30c9\u4f8b\u3092\u81ea\u5206\u3067\u5b9f\u884c\u3057\u3066\u52d5\u4f5c\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n\n\n\n<li><strong>\u5fdc\u7528\u3057\u3066\u307f\u308b<\/strong>: \u81ea\u5206\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u5b9f\u969b\u306b\u4f7f\u7528\u3057\u3001\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n\n\n\n<li><strong>\u6700\u9069\u5316\u3059\u308b<\/strong>: \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6e2c\u5b9a\u3092\u3057\u306a\u304c\u3089\u3001\u51e6\u7406\u52b9\u7387\u3092\u5411\u4e0a\u3055\u305b\u307e\u3057\u3087\u3046\u3002<\/li>\n\n\n\n<li><strong>\u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc\u3092\u53d7\u3051\u308b<\/strong>: \u53ef\u80fd\u3067\u3042\u308c\u3070\u4ed6\u306e\u958b\u767a\u8005\u304b\u3089\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u53d7\u3051\u3001\u6539\u5584\u70b9\u3092\u898b\u3064\u3051\u307e\u3057\u3087\u3046\u3002<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-61\">\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\uff1a\u3055\u3089\u306b\u9ad8\u5ea6\u306aPHP\u30eb\u30fc\u30d7\u51e6\u7406\u30c6\u30af\u30cb\u30c3\u30af\u3078<\/h3>\n\n\n\n<p>for\u30eb\u30fc\u30d7\u306e\u57fa\u672c\u3092\u7fd2\u5f97\u3057\u305f\u3089\u3001\u3055\u3089\u306b\u9ad8\u5ea6\u306a\u30eb\u30fc\u30d7\u51e6\u7406\u30c6\u30af\u30cb\u30c3\u30af\u3092\u5b66\u3076\u3053\u3068\u3067\u3001PHP\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u3068\u3057\u3066\u306e\u30b9\u30ad\u30eb\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-62\">\u30a4\u30c6\u30ec\u30fc\u30bf\u3068\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf<\/h4>\n\n\n\n<p>PHP\u3067\u306f\u3001\u30a4\u30c6\u30ec\u30fc\u30bf\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3068\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u51e6\u7406\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=\"\">&lt;?php\n\/\/ \u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u4f7f\u3063\u305f\u5927\u304d\u306a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u52b9\u7387\u7684\u306a\u51e6\u7406\nfunction getLines(string $file) {\n    $handle = fopen($file, 'r');\n    while (($line = fgets($handle)) !== false) {\n        yield trim($line);\n    }\n    fclose($handle);\n}\n\n\/\/ \u4f7f\u7528\u4f8b\uff1a\u5de8\u5927\u30d5\u30a1\u30a4\u30eb\u3092\u5c11\u306a\u3044\u30e1\u30e2\u30ea\u3067\u51e6\u7406\nforeach (getLines('huge_log.txt') as $line) {\n    \/\/ \u5404\u884c\u3092\u51e6\u7406...\n    echo $line . \"&lt;br&gt;\";\n}\n?&gt;\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-63\">\u95a2\u6570\u578b\u30a2\u30d7\u30ed\u30fc\u30c1<\/h4>\n\n\n\n<p>PHP\u306f\u547d\u4ee4\u578b\u3068\u95a2\u6570\u578b\u306e\u4e21\u65b9\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u9ad8\u968e\u95a2\u6570\u3092\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u3067\u3001\u3088\u308a\u5ba3\u8a00\u7684\u306a\u30b3\u30fc\u30c9\u304c\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>array_map()<\/code>: \u914d\u5217\u306e\u5404\u8981\u7d20\u306b\u95a2\u6570\u3092\u9069\u7528<\/li>\n\n\n\n<li><code>array_filter()<\/code>: \u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u8981\u7d20\u3060\u3051\u3092\u62bd\u51fa<\/li>\n\n\n\n<li><code>array_reduce()<\/code>: \u914d\u5217\u306e\u8981\u7d20\u3092\u96c6\u7d04\u3057\u3066\u5358\u4e00\u306e\u5024\u306b\u5909\u63db<\/li>\n\n\n\n<li><code>array_walk()<\/code>: \u914d\u5217\u306e\u5404\u8981\u7d20\u306b\u95a2\u6570\u3092\u9069\u7528\uff08\u30aa\u30ea\u30b8\u30ca\u30eb\u306e\u914d\u5217\u3092\u5909\u66f4\uff09<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n$numbers = [1, 2, 3, 4, 5];\n\n\/\/ \u547d\u4ee4\u578b\u30a2\u30d7\u30ed\u30fc\u30c1\uff08for\u30eb\u30fc\u30d7\uff09\n$doubled = [];\nfor ($i = 0; $i &lt; count($numbers); $i++) {\n    if ($numbers[$i] % 2 == 0) {\n        $doubled[] = $numbers[$i] * 2;\n    }\n}\n\n\/\/ \u95a2\u6570\u578b\u30a2\u30d7\u30ed\u30fc\u30c1\n$doubled = array_map(\n    function($n) { return $n * 2; },\n    array_filter($numbers, function($n) { return $n % 2 == 0; })\n);\n\n\/\/ PHP 7.4\u4ee5\u964d\u306e\u30a2\u30ed\u30fc\u95a2\u6570\u3092\u4f7f\u7528\n$doubled = array_map(\n    fn($n) =&gt; $n * 2,\n    array_filter($numbers, fn($n) =&gt; $n % 2 == 0)\n);\n?&gt;\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-64\">\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3<\/h4>\n\n\n\n<p>Laravel\u3084Symfony\u306a\u3069\u306e\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u305d\u308c\u305e\u308c\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u30af\u30e9\u30b9\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u8868\u73fe\u529b\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u304c\u66f8\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ Laravel\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u4f7f\u3063\u305f\u4f8b\nuse Illuminate\\Support\\Collection;\n\n$users = Collection::make([\n    ['name' =&gt; '\u4f50\u85e4', 'role' =&gt; 'admin'],\n    ['name' =&gt; '\u9234\u6728', 'role' =&gt; 'user'],\n    ['name' =&gt; '\u7530\u4e2d', 'role' =&gt; 'admin'],\n]);\n\n$adminNames = $users\n    -&gt;filter(fn($user) =&gt; $user['role'] === 'admin')\n    -&gt;map(fn($user) =&gt; $user['name'])\n    -&gt;values();\n\n\/\/ \u7d50\u679c: ['\u4f50\u85e4', '\u7530\u4e2d']\n?&gt;\n<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-65\">\u975e\u540c\u671f\u51e6\u7406<\/h4>\n\n\n\n<p>PHP\u3067\u306f\u3001ReactPHP\u3084Swole\u306a\u3069\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u975e\u540c\u671f\u30eb\u30fc\u30d7\u51e6\u7406\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u5927\u91cf\u306eI\/O\u64cd\u4f5c\u3092\u4f34\u3046\u30bf\u30b9\u30af\u306b\u7279\u306b\u6709\u52b9\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;?php\n\/\/ ReactPHP\u3092\u4f7f\u3063\u305f\u975e\u540c\u671f\u51e6\u7406\u306e\u4f8b\uff08\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304c\u5fc5\u8981\uff09\n$loop = React\\EventLoop\\Factory::create();\n\nfor ($i = 0; $i &lt; 5; $i++) {\n    $loop-&gt;addTimer($i, function() use ($i) {\n        echo \"Timer $i\\n\";\n    });\n}\n\n$loop-&gt;run();\n?&gt;\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-66\">\u53c2\u8003\u30ea\u30bd\u30fc\u30b9\u3068\u63a8\u5968\u5b66\u7fd2\u6559\u6750<\/h3>\n\n\n\n<p>PHP\u306efor\u30eb\u30fc\u30d7\u3084\u9ad8\u5ea6\u306a\u30eb\u30fc\u30d7\u51e6\u7406\u30c6\u30af\u30cb\u30c3\u30af\u3092\u3055\u3089\u306b\u5b66\u3076\u305f\u3081\u306e\u53c2\u8003\u30ea\u30bd\u30fc\u30b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-67\">\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.php.net\/manual\/ja\/control-structures.for.php\">PHP \u30de\u30cb\u30e5\u30a2\u30eb: for<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.php.net\/manual\/ja\/ref.array.php\">PHP \u30de\u30cb\u30e5\u30a2\u30eb: \u914d\u5217\u95a2\u6570<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.php.net\/manual\/ja\/language.generators.overview.php\">PHP \u30de\u30cb\u30e5\u30a2\u30eb: \u30a4\u30c6\u30ec\u30fc\u30bf<\/a><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-68\">\u66f8\u7c4d<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u300ePHP: The Right Way\u300f\uff08Web\u4e0a\u3067\u7121\u6599\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u73fe\u4ee3\u7684\u306aPHP\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u96c6\uff09<\/li>\n\n\n\n<li>\u300eModern PHP\u300f\uff08Josh Lockhart\u8457\u3001O\u2019Reilly\u51fa\u7248\uff09<\/li>\n\n\n\n<li>\u300e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0PHP\u300f\uff08Kevin Tatroe, Peter MacIntyre\u8457\u3001\u30aa\u30e9\u30a4\u30ea\u30fc\u30b8\u30e3\u30d1\u30f3\uff09<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-69\">\u30aa\u30f3\u30e9\u30a4\u30f3\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Laracasts\uff08https:\/\/laracasts.com\/\uff09- PHP\u3068Laravel\u306b\u95a2\u3059\u308b\u9ad8\u54c1\u8cea\u306a\u52d5\u753b\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb<\/li>\n\n\n\n<li>Codecademy\uff08https:\/\/www.codecademy.com\/\uff09- \u5bfe\u8a71\u5f0f\u306ePHP\u5b66\u7fd2\u30b3\u30fc\u30b9<\/li>\n\n\n\n<li>Symfony Casts\uff08https:\/\/symfonycasts.com\/\uff09- Symfony\u306b\u95a2\u3059\u308b\u5305\u62ec\u7684\u306a\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-70\">\u30b3\u30df\u30e5\u30cb\u30c6\u30a3<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>PHP\u30e6\u30fc\u30b6\u30fc\u30b0\u30eb\u30fc\u30d7\uff08\u5404\u5730\u57df\u3067\u958b\u50ac\u3055\u308c\u3066\u3044\u308bPHP\u958b\u767a\u8005\u306e\u96c6\u307e\u308a\uff09<\/li>\n\n\n\n<li>PHP\u30ab\u30f3\u30d5\u30a1\u30ec\u30f3\u30b9\uff08PHP\u30ab\u30f3\u30d5\u30a1\u30ec\u30f3\u30b9\u65e5\u672c\u306a\u3069\uff09<\/li>\n\n\n\n<li>Stack Overflow\u306ePHP\u30bf\u30b0\uff08\u8cea\u554f\u3068\u56de\u7b54\u3067\u5b66\u3079\u308b\uff09<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-71\">\u52b9\u7387\u7684\u306a\u958b\u767a\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u6700\u5f8c\u306e\u30a2\u30c9\u30d0\u30a4\u30b9<\/h3>\n\n\n\n<p>PHP\u306efor\u30eb\u30fc\u30d7\u3092\u542b\u3080\u3055\u307e\u3056\u307e\u306a\u5236\u5fa1\u69cb\u9020\u3092\u4f7f\u3044\u3053\u306a\u3059\u3053\u3068\u306f\u3001\u52b9\u7387\u7684\u306a\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u57fa\u790e\u3067\u3059\u3002\u6700\u5f8c\u306b\u3001\u5b9f\u52d9\u3067\u306ePHP\u958b\u767a\u3092\u3088\u308a\u52b9\u7387\u7684\u306b\u3059\u308b\u305f\u3081\u306e\u30a2\u30c9\u30d0\u30a4\u30b9\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u9069\u5207\u306a\u30eb\u30fc\u30d7\u69cb\u9020\u3092\u9078\u3076<\/strong>: for\u30eb\u30fc\u30d7\u304c\u30d9\u30b9\u30c8\u306a\u5834\u5408\u3082\u3042\u308c\u3070\u3001foreach\u3084while\u3001\u3042\u308b\u3044\u306f\u95a2\u6570\u578b\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u9069\u3057\u3066\u3044\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u6700\u9069\u306a\u9078\u629e\u3092\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n\n\n\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u306e\u30d0\u30e9\u30f3\u30b9<\/strong>: \u6975\u7aef\u306a\u6700\u9069\u5316\u3088\u308a\u3082\u3001\u8aad\u307f\u3084\u3059\u304f\u4fdd\u5b88\u3057\u3084\u3059\u3044\u30b3\u30fc\u30c9\u3092\u5fc3\u304c\u3051\u307e\u3057\u3087\u3046\u3002\u5fc5\u8981\u306a\u5834\u5408\u306b\u306e\u307f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u3092\u884c\u3044\u307e\u3057\u3087\u3046\u3002<\/li>\n\n\n\n<li><strong>\u7d99\u7d9a\u7684\u306a\u5b66\u7fd2<\/strong>: PHP\u306f\u5e38\u306b\u9032\u5316\u3057\u3066\u3044\u307e\u3059\u3002\u65b0\u3057\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u6a5f\u80fd\u3084\u6700\u65b0\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u5b66\u3073\u7d9a\u3051\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30c6\u30b9\u30c8\u3092\u7fd2\u6163\u5316<\/strong>: \u81ea\u52d5\u30c6\u30b9\u30c8\u3092\u66f8\u304f\u3053\u3068\u3067\u3001\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u3084\u6a5f\u80fd\u8ffd\u52a0\u6642\u306e\u5b89\u5168\u6027\u304c\u9ad8\u307e\u308a\u307e\u3059\u3002\u7279\u306b\u30eb\u30fc\u30d7\u51e6\u7406\u306f\u5883\u754c\u6761\u4ef6\u306e\u30d0\u30b0\u304c\u767a\u751f\u3057\u3084\u3059\u3044\u306e\u3067\u3001\u30c6\u30b9\u30c8\u304c\u91cd\u8981\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc\u3092\u5927\u5207\u306b<\/strong>: \u4ed6\u306e\u958b\u767a\u8005\u304b\u3089\u306e\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u306f\u3001\u81ea\u5206\u3067\u306f\u6c17\u3065\u304b\u306a\u3044\u554f\u984c\u3084\u6539\u5584\u70b9\u3092\u898b\u3064\u3051\u308b\u8cb4\u91cd\u306a\u6a5f\u4f1a\u3067\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>for\u30eb\u30fc\u30d7\u306f\u5358\u7d14\u306a\u69cb\u6587\u306b\u898b\u3048\u307e\u3059\u304c\u3001\u305d\u306e\u5fdc\u7528\u7bc4\u56f2\u306f\u975e\u5e38\u306b\u5e83\u304f\u3001\u9069\u5207\u306a\u4f7f\u3044\u65b9\u3092\u8eab\u306b\u3064\u3051\u308b\u3053\u3068\u3067PHP\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u30b9\u30ad\u30eb\u5168\u4f53\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u305f\u30c6\u30af\u30cb\u30c3\u30af\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u5b9f\u8df5\u3057\u3001\u3088\u308a\u52b9\u7387\u7684\u3067\u5805\u7262\u306aPHP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u958b\u767a\u306b\u5f79\u7acb\u3066\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306f\u7d99\u7d9a\u7684\u306a\u5b66\u7fd2\u3068\u5b9f\u8df5\u306e\u65c5\u3067\u3059\u3002\u4e00\u6b69\u305a\u3064\u7740\u5b9f\u306b\u30b9\u30ad\u30eb\u3092\u78e8\u304d\u3001\u3088\u308a\u826f\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u3051\u308bPHP\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u76ee\u6307\u3057\u307e\u3057\u3087\u3046\u3002<\/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-3445","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\/3445","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=3445"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/3445\/revisions"}],"predecessor-version":[{"id":3446,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/3445\/revisions\/3446"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}