{"id":3436,"date":"2025-03-24T08:46:11","date_gmt":"2025-03-23T23:46:11","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=3436"},"modified":"2025-03-24T08:46:41","modified_gmt":"2025-03-23T23:46:41","slug":"%e3%80%90%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%e3%80%91php%e3%81%ae%e9%85%8d%e5%88%97%e3%81%ab%e8%a6%81%e7%b4%a0%e3%82%92%e8%bf%bd%e5%8a%a0%e3%81%99%e3%82%8b9%e3%81%a4%e3%81%ae%e6%96%b9","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=3436","title":{"rendered":"\u3010\u5b8c\u5168\u30ac\u30a4\u30c9\u3011PHP\u306e\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b9\u3064\u306e\u65b9\u6cd5\u3068\u5b9f\u8df5\u7684\u306a\u30b3\u30fc\u30c9\u4f8b20\u9078"},"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\u306e\u914d\u5217\u3068\u306f\uff1f\u57fa\u672c\u6982\u5ff5\u306e\u7406\u89e3<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u914d\u5217\u306fPHP\u3067\u30c7\u30fc\u30bf\u3092\u683c\u7d0d\u3059\u308b\u6700\u3082\u5f37\u529b\u306a\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-2\">\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217\u3068\u9023\u60f3\u914d\u5217\u306e\u9055\u3044\u3092\u7406\u89e3\u3057\u3088\u3046<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-3\">PHP 7\u30688\u3067\u306e\u914d\u5217\u6a5f\u80fd\u306e\u9032\u5316<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-4\">\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u57fa\u672c\u7684\u306a\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-5\">array_push()\u95a2\u6570\u3067\u914d\u5217\u306e\u672b\u5c3e\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b<\/a>      <\/li>      <li>        <a href=\"#i-6\">[]\u6f14\u7b97\u5b50\u3092\u4f7f\u3063\u305f\u7c21\u6f54\u306a\u8ffd\u52a0\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-7\">\u9023\u60f3\u914d\u5217\u306b\u65b0\u3057\u3044\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3092\u8ffd\u52a0\u3059\u308b<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-8\">\u914d\u5217\u306e\u5148\u982d\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-9\">array_unshift()\u95a2\u6570\u306e\u30d1\u30ef\u30fc\u3092\u6d3b\u7528\u3057\u3088\u3046<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-10\">\u5148\u982d\u8ffd\u52a0\u3068\u672b\u5c3e\u8ffd\u52a0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-11\">\u914d\u5217\u306e\u7279\u5b9a\u306e\u4f4d\u7f6e\u306b\u8981\u7d20\u3092\u633f\u5165\u3059\u308b\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-12\">array_splice()\u95a2\u6570\u3067\u30d4\u30f3\u30dd\u30a4\u30f3\u30c8\u633f\u5165\u3092\u5b9f\u73fe<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-13\">\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u6307\u5b9a\u3057\u3066\u633f\u5165\u3059\u308b\u969b\u306e\u6ce8\u610f\u70b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-14\">\u8907\u6570\u306e\u914d\u5217\u3092\u7d50\u5408\u3059\u308b\u52b9\u679c\u7684\u306a\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-15\">array_merge()\u3067\u8907\u6570\u914d\u5217\u3092\u7c21\u5358\u306b\u7d50\u5408<\/a>      <\/li>      <li>        <a href=\"#i-16\">array_combine()\u3067\u30ad\u30fc\u3068\u5024\u306e\u914d\u5217\u304b\u3089\u65b0\u3057\u3044\u914d\u5217\u3092\u4f5c\u6210<\/a>      <\/li>      <li>        <a href=\"#i-17\">\u30b9\u30d7\u30ec\u30c3\u30c9\u6f14\u7b97\u5b50(\u2026)\u3092\u4f7f\u3063\u305f\u914d\u5217\u7d50\u5408\uff08PHP 7.4\u4ee5\u964d\uff09<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-18\">\u5404\u7d50\u5408\u65b9\u6cd5\u306e\u6bd4\u8f03\u3068\u9078\u629e\u57fa\u6e96<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-19\">\u6761\u4ef6\u4ed8\u304d\u3067\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-20\">\u91cd\u8907\u30c1\u30a7\u30c3\u30af\u3092\u3057\u3066\u304b\u3089\u8ffd\u52a0\u3059\u308bin_array()\u306e\u6d3b\u7528\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-21\">isset()\u3068array_key_exists()\u3092\u4f7f\u3063\u305f\u5b89\u5168\u306a\u8ffd\u52a0\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-22\">\u591a\u6b21\u5143\u914d\u5217\u3078\u306e\u8981\u7d20\u8ffd\u52a0\u3068\u64cd\u4f5c\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-23\">\u30cd\u30b9\u30c8\u3057\u305f\u914d\u5217\u306b\u65b0\u3057\u3044\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-24\">\u591a\u6b21\u5143\u914d\u5217\u3092\u64cd\u4f5c\u3059\u308b\u969b\u306e\u3088\u304f\u3042\u308b\u843d\u3068\u3057\u7a74<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-25\">\u5927\u898f\u6a21\u914d\u5217\u64cd\u4f5c\u6642\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-26\">\u30e1\u30e2\u30ea\u6d88\u8cbb\u3092\u6291\u3048\u305f\u52b9\u7387\u7684\u306a\u914d\u5217\u8ffd\u52a0\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-27\">\u53c2\u7167\u6e21\u3057\u3092\u6d3b\u7528\u3057\u305f\u9ad8\u901f\u306a\u914d\u5217\u64cd\u4f5c<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-28\">\u5b9f\u8df5\u7684\u306aPHP\u914d\u5217\u6d3b\u7528\u30b7\u30fc\u30f3\u3068\u5177\u4f53\u4f8b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-29\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7d50\u679c\u3092\u914d\u5217\u306b\u8ffd\u52a0\u3057\u3066\u51e6\u7406\u3059\u308b\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-30\">JSON\u30c7\u30fc\u30bf\u3092\u914d\u5217\u306b\u5909\u63db\u3057\u3066\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-31\">\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u9001\u4fe1\u3055\u308c\u305f\u5024\u3092\u914d\u5217\u306b\u5b89\u5168\u306b\u8ffd\u52a0\u3059\u308b<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-32\">\u307e\u3068\u3081\uff1a\u72b6\u6cc1\u306b\u5fdc\u3058\u305f\u6700\u9069\u306a\u914d\u5217\u8ffd\u52a0\u65b9\u6cd5\u306e\u9078\u3073\u65b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-33\">\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u5225\u304a\u3059\u3059\u3081\u306e\u914d\u5217\u8ffd\u52a0\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-34\">\u3055\u3089\u306a\u308b\u914d\u5217\u30b9\u30ad\u30eb\u5411\u4e0a\u306e\u305f\u3081\u306e\u5b66\u7fd2\u30ea\u30bd\u30fc\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\u306e\u914d\u5217\u3068\u306f\uff1f\u57fa\u672c\u6982\u5ff5\u306e\u7406\u89e3<\/h2>\n\n\n\n<p>PHP\u306e\u914d\u5217\u306f\u3001\u30c7\u30fc\u30bf\u3092\u52b9\u7387\u7684\u306b\u7ba1\u7406\u3059\u308b\u305f\u3081\u306e\u6700\u3082\u67d4\u8edf\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u3059\u3002\u30b7\u30f3\u30d7\u30eb\u306b\u8aac\u660e\u3059\u308b\u3068\u3001\u914d\u5217\u306f\u8907\u6570\u306e\u5024\u3092\u3072\u3068\u3064\u306e\u5909\u6570\u3067\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u300c\u5165\u308c\u7269\u300d\u3068\u8003\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002PHP\u3067\u306f\u3001\u914d\u5217\u306f\u5358\u306a\u308b\u5024\u306e\u96c6\u307e\u308a\u3067\u306f\u306a\u304f\u3001\u300c\u30ad\u30fc\u300d\u3068\u300c\u5024\u300d\u306e\u30da\u30a2\u304b\u3089\u306a\u308b\u9806\u5e8f\u4ed8\u304d\u30de\u30c3\u30d7\u3068\u3057\u3066\u5b9f\u88c5\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u914d\u5217\u306fPHP\u3067\u30c7\u30fc\u30bf\u3092\u683c\u7d0d\u3059\u308b\u6700\u3082\u5f37\u529b\u306a\u65b9\u6cd5<\/h3>\n\n\n\n<p>PHP\u306e\u914d\u5217\u306e\u5927\u304d\u306a\u7279\u5fb4\u306f\u3001\u305d\u306e\u591a\u69d8\u6027\u3068\u67d4\u8edf\u6027\u306b\u3042\u308a\u307e\u3059\u3002\u4e00\u3064\u306e\u914d\u5217\u5185\u306b\u3001\u6587\u5b57\u5217\u3001\u6574\u6570\u3001\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3001\u3055\u3089\u306b\u306f\u4ed6\u306e\u914d\u5217\u307e\u3067\u3001\u7570\u306a\u308b\u30c7\u30fc\u30bf\u578b\u3092\u6df7\u5728\u3055\u305b\u3066\u683c\u7d0d\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u7279\u6027\u306b\u3088\u308a\u3001PHP\u306e\u914d\u5217\u306f\u69d8\u3005\u306a\u7528\u9014\u306b\u9069\u5fdc\u53ef\u80fd\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u69d8\u3005\u306a\u30c7\u30fc\u30bf\u578b\u3092\u683c\u7d0d\u3067\u304d\u308b\u914d\u5217\n$mixedArray = [\n    \"name\" =&gt; \"\u5c71\u7530\u592a\u90ce\",  \/\/ \u6587\u5b57\u5217\n    \"age\" =&gt; 30,          \/\/ \u6574\u6570\n    \"height\" =&gt; 175.5,    \/\/ \u6d6e\u52d5\u5c0f\u6570\u70b9\u6570\n    \"isActive\" =&gt; true,   \/\/ \u8ad6\u7406\u5024\n    \"skills\" =&gt; [\"PHP\", \"MySQL\", \"JavaScript\"]  \/\/ \u914d\u5217\uff08\u591a\u6b21\u5143\u914d\u5217\uff09\n];\n\n\/\/ \u914d\u5217\u306e\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\necho $mixedArray[\"name\"];  \/\/ \u51fa\u529b: \u5c71\u7530\u592a\u90ce\necho $mixedArray[\"skills\"][0];  \/\/ \u51fa\u529b: PHP\n<\/pre>\n\n\n\n<p>\u914d\u5217\u306f\u52d5\u7684\u306b\u30b5\u30a4\u30ba\u304c\u5909\u66f4\u3067\u304d\u3001\u5b9f\u884c\u6642\u306b\u8981\u7d20\u306e\u8ffd\u52a0\u30fb\u524a\u9664\u304c\u53ef\u80fd\u306a\u305f\u3081\u3001\u67d4\u8edf\u306a\u30c7\u30fc\u30bf\u7ba1\u7406\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217\u3068\u9023\u60f3\u914d\u5217\u306e\u9055\u3044\u3092\u7406\u89e3\u3057\u3088\u3046<\/h3>\n\n\n\n<p>PHP\u306b\u306f\u4e3b\u306b2\u7a2e\u985e\u306e\u914d\u5217\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217<\/strong>\uff1a\u6570\u5024\u30ad\u30fc\uff08\u901a\u5e38\u306f0\u304b\u3089\u59cb\u307e\u308b\u9023\u7d9a\u3057\u305f\u6574\u6570\uff09\u3092\u4f7f\u7528\u3059\u308b\u914d\u5217 <code>\/\/ \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217\u306e\u4f5c\u6210 $fruits = [\"\u308a\u3093\u3054\", \"\u30d0\u30ca\u30ca\", \"\u30aa\u30ec\u30f3\u30b8\"]; \/\/ \u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9 echo $fruits[0]; \/\/ \u51fa\u529b: \u308a\u3093\u3054 echo $fruits[1]; \/\/ \u51fa\u529b: \u30d0\u30ca\u30ca<\/code><\/li>\n\n\n\n<li><strong>\u9023\u60f3\u914d\u5217<\/strong>\uff1a\u6587\u5b57\u5217\u307e\u305f\u306f\u6574\u6570\u3092\u81ea\u7531\u306b\u30ad\u30fc\u3068\u3057\u3066\u4f7f\u7528\u3059\u308b\u914d\u5217 <code>\/\/ \u9023\u60f3\u914d\u5217\u306e\u4f5c\u6210 $person = [ \"name\" =&gt; \"\u4f50\u85e4\u82b1\u5b50\", \"email\" =&gt; \"hanako@example.com\", \"phone\" =&gt; \"090-1234-5678\" ]; \/\/ \u8981\u7d20\u3078\u306e\u30a2\u30af\u30bb\u30b9 echo $person[\"name\"]; \/\/ \u51fa\u529b: \u4f50\u85e4\u82b1\u5b50<\/code><\/li>\n<\/ol>\n\n\n\n<p>\u5b9f\u969b\u306b\u306f\u3001PHP\u306f\u3053\u306e2\u3064\u3092\u53b3\u5bc6\u306b\u533a\u5225\u305b\u305a\u3001\u540c\u3058\u914d\u5217\u5185\u3067\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u65b9\u5f0f\u3068\u9023\u60f3\u65b9\u5f0f\u3092\u6df7\u5728\u3055\u305b\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u53ef\u8aad\u6027\u3068\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u306e\u89b3\u70b9\u304b\u3089\u3001\u4e00\u822c\u7684\u306b\u306f\u4e00\u3064\u306e\u65b9\u5f0f\u3067\u7d71\u4e00\u3059\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-3\">PHP 7\u30688\u3067\u306e\u914d\u5217\u6a5f\u80fd\u306e\u9032\u5316<\/h3>\n\n\n\n<p>PHP\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u30a2\u30c3\u30d7\u306b\u4f34\u3044\u3001\u914d\u5217\u306e\u6a5f\u80fd\u3082\u9032\u5316\u3057\u3066\u304d\u307e\u3057\u305f\uff1a<\/p>\n\n\n<div id=\"id-9544a396-126d-45df-888b-c0a2c3ff5cd2\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30d0\u30fc\u30b8\u30e7\u30f3<\/th><th>\u4e3b\u306a\u914d\u5217\u95a2\u9023\u306e\u6539\u5584<\/th><\/tr><\/thead><tbody><tr><td>PHP 7.0<\/td><td>\u914d\u5217\u64cd\u4f5c\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5927\u5e45\u5411\u4e0a\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u6700\u9069\u5316<\/td><\/tr><tr><td>PHP 7.4<\/td><td>\u30b9\u30d7\u30ec\u30c3\u30c9\u6f14\u7b97\u5b50(<code>...<\/code>)\u306e\u914d\u5217\u3067\u306e\u5229\u7528\u304c\u53ef\u80fd\u306b<\/td><\/tr><tr><td>PHP 8.0<\/td><td>\u540d\u524d\u4ed8\u304d\u5f15\u6570\u306e\u30b5\u30dd\u30fc\u30c8\u306b\u3088\u308a\u914d\u5217\u3092\u6271\u3046\u95a2\u6570\u306e\u4f7f\u3044\u52dd\u624b\u304c\u5411\u4e0a<\/td><\/tr><tr><td>PHP 8.1<\/td><td><code>array_is_list()<\/code>\u95a2\u6570\u306e\u8ffd\u52a0\uff08\u9023\u7d9a\u3057\u305f\u6570\u5024\u30ad\u30fc\u3092\u6301\u3064\u914d\u5217\u304b\u3092\u5224\u5b9a\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u7279\u306bPHP 7\u304b\u3089\u306f\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3057\u3001\u5de8\u5927\u306a\u914d\u5217\u3092\u6271\u3046\u969b\u306e\u51e6\u7406\u901f\u5ea6\u3082\u6539\u5584\u3055\u308c\u3066\u3044\u307e\u3059\u3002PHP 8\u3067\u306f\u3055\u3089\u306b\u67d4\u8edf\u306a\u914d\u5217\u64cd\u4f5c\u304c\u53ef\u80fd\u306b\u306a\u308a\u3001\u3088\u308a\u76f4\u611f\u7684\u306a\u30b3\u30fc\u30c9\u304c\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\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=\"\">\/\/ PHP 7.4\u4ee5\u964d\u3067\u306e\u30b9\u30d7\u30ec\u30c3\u30c9\u6f14\u7b97\u5b50\u306e\u5229\u7528\u4f8b\n$fruits1 = [\"\u308a\u3093\u3054\", \"\u30d0\u30ca\u30ca\"];\n$fruits2 = [\"\u30aa\u30ec\u30f3\u30b8\", \"\u3076\u3069\u3046\"];\n$allFruits = [...$fruits1, ...$fruits2];\nprint_r($allFruits);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; \u308a\u3093\u3054 [1] =&gt; \u30d0\u30ca\u30ca [2] =&gt; \u30aa\u30ec\u30f3\u30b8 [3] =&gt; \u3076\u3069\u3046 )\n\n\/\/ PHP 8.1\u4ee5\u964d\u3067\u306earray_is_list()\u306e\u5229\u7528\u4f8b\nvar_dump(array_is_list([1, 2, 3]));  \/\/ \u51fa\u529b: bool(true)\nvar_dump(array_is_list([\"a\" =&gt; 1, \"b\" =&gt; 2]));  \/\/ \u51fa\u529b: bool(false)\n<\/pre>\n\n\n\n<p>\u3053\u306e\u57fa\u672c\u6982\u5ff5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u914d\u5217\u3092\u4f7f\u3063\u305f\u52b9\u7387\u7684\u306a\u30c7\u30fc\u30bf\u7ba1\u7406\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u304b\u3089\u306f\u3001\u3053\u308c\u3089\u306e\u914d\u5217\u306b\u5bfe\u3057\u3066\u5177\u4f53\u7684\u306b\u3069\u306e\u3088\u3046\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3057\u3066\u3044\u304f\u304b\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-4\">\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u57fa\u672c\u7684\u306a\u65b9\u6cd5<\/h2>\n\n\n\n<p>PHP\u3067\u306f\u3001\u914d\u5217\u306b\u65b0\u3057\u3044\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u8907\u6570\u306e\u65b9\u6cd5\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u6700\u9069\u306a\u65b9\u6cd5\u3092\u9078\u3076\u3053\u3068\u3067\u3001\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3068\u52b9\u7387\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u6700\u3082\u57fa\u672c\u7684\u3067\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b3\u3064\u306e\u65b9\u6cd5\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">array_push()\u95a2\u6570\u3067\u914d\u5217\u306e\u672b\u5c3e\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b<\/h3>\n\n\n\n<p><code>array_push()<\/code>\u95a2\u6570\u306f\u30011\u3064\u307e\u305f\u306f\u8907\u6570\u306e\u8981\u7d20\u3092\u914d\u5217\u306e\u672b\u5c3e\u306b\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u6a19\u6e96\u95a2\u6570\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=\"\">\/\/ array_push()\u306e\u57fa\u672c\u69cb\u6587\narray_push(array &amp;$array, mixed ...$values): int\n\n\/\/ \u4f7f\u7528\u4f8b\n$fruits = [\"\u308a\u3093\u3054\", \"\u30d0\u30ca\u30ca\"];\narray_push($fruits, \"\u30aa\u30ec\u30f3\u30b8\");\nprint_r($fruits);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; \u308a\u3093\u3054 [1] =&gt; \u30d0\u30ca\u30ca [2] =&gt; \u30aa\u30ec\u30f3\u30b8 )\n\n\/\/ \u8907\u6570\u8981\u7d20\u3092\u4e00\u5ea6\u306b\u8ffd\u52a0\narray_push($fruits, \"\u3076\u3069\u3046\", \"\u30e1\u30ed\u30f3\", \"\u30d1\u30a4\u30ca\u30c3\u30d7\u30eb\");\nprint_r($fruits);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; \u308a\u3093\u3054 [1] =&gt; \u30d0\u30ca\u30ca [2] =&gt; \u30aa\u30ec\u30f3\u30b8 [3] =&gt; \u3076\u3069\u3046 [4] =&gt; \u30e1\u30ed\u30f3 [5] =&gt; \u30d1\u30a4\u30ca\u30c3\u30d7\u30eb )\n<\/pre>\n\n\n\n<p><code>array_push()<\/code>\u306e\u7279\u5fb4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f15\u6570\u306f\u53c2\u7167\u6e21\u3057\u306a\u306e\u3067\u3001\u5143\u306e\u914d\u5217\u304c\u76f4\u63a5\u5909\u66f4\u3055\u308c\u307e\u3059<\/li>\n\n\n\n<li>\u623b\u308a\u5024\u306f\u64cd\u4f5c\u5f8c\u306e\u914d\u5217\u306e\u8981\u7d20\u6570\u3067\u3059<\/li>\n\n\n\n<li>\u8907\u6570\u306e\u8981\u7d20\u3092\u4e00\u5ea6\u306b\u8ffd\u52a0\u3067\u304d\u308b\u305f\u3081\u3001\u30b3\u30fc\u30c9\u304c\u7c21\u6f54\u306b\u306a\u308a\u307e\u3059<\/li>\n\n\n\n<li>\u7b2c1\u5f15\u6570\u306f\u5fc5\u305a\u914d\u5217\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff08\u305d\u3046\u3067\u306a\u3044\u5834\u5408\u306f\u30a8\u30e9\u30fc\uff09<\/li>\n<\/ul>\n\n\n\n<p><strong>\u6ce8\u610f\u70b9<\/strong>: <code>array_push()<\/code>\u306f\u9023\u60f3\u914d\u5217\u306e\u30ad\u30fc\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u81ea\u52d5\u7684\u306b\u6570\u5024\u30ad\u30fc\u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">[]\u6f14\u7b97\u5b50\u3092\u4f7f\u3063\u305f\u7c21\u6f54\u306a\u8ffd\u52a0\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u914d\u5217\u306b1\u3064\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u5834\u5408\u3001\u89d2\u62ec\u5f27\uff08<code>[]<\/code>\uff09\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3059\u308b\u3068\u3088\u308a\u7c21\u6f54\u306b\u8a18\u8ff0\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=\"\">\/\/ []\u6f14\u7b97\u5b50\u306e\u57fa\u672c\u69cb\u6587\n$array[] = $value;\n\n\/\/ \u4f7f\u7528\u4f8b\n$colors = [\"\u8d64\", \"\u9752\"];\n$colors[] = \"\u7dd1\";\nprint_r($colors);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; \u8d64 [1] =&gt; \u9752 [2] =&gt; \u7dd1 )\n\n\/\/ \u30eb\u30fc\u30d7\u5185\u3067\u306e\u4f7f\u7528\u4f8b\n$numbers = [];\nfor ($i = 1; $i &lt;= 5; $i++) {\n    $numbers[] = $i * 2;\n}\nprint_r($numbers);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; 2 [1] =&gt; 4 [2] =&gt; 6 [3] =&gt; 8 [4] =&gt; 10 )\n<\/pre>\n\n\n\n[]\u6f14\u7b97\u5b50\u306e\u7279\u5fb4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>array_push()<\/code>\u3088\u308a\u3082\u9ad8\u901f\uff08\u7279\u306b1\u8981\u7d20\u306e\u8ffd\u52a0\u6642\uff09<\/li>\n\n\n\n<li>\u30b3\u30fc\u30c9\u304c\u3088\u308a\u7c21\u6f54\u3067\u8aad\u307f\u3084\u3059\u3044<\/li>\n\n\n\n<li>\u5185\u90e8\u7684\u306b\u306f\u3001\u6700\u5927\u306e\u6570\u5024\u30ad\u30fc+1\u306e\u4f4d\u7f6e\u306b\u8981\u7d20\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3059<\/li>\n\n\n\n<li>\u7a7a\u306e\u914d\u5217\u304b\u3089\u59cb\u3081\u3066\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u5834\u5408\u306b\u7279\u306b\u4fbf\u5229<\/li>\n<\/ul>\n\n\n\n<p><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03<\/strong>: 1\u3064\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u5834\u5408\u3001<code>$array[] = $value;<\/code> \u306f <code>array_push($array, $value);<\/code> \u3088\u308a\u3082\u51e6\u7406\u304c\u82e5\u5e72\u901f\u3044\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">\u9023\u60f3\u914d\u5217\u306b\u65b0\u3057\u3044\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3092\u8ffd\u52a0\u3059\u308b<\/h3>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u306e\u5834\u5408\u3001\u30ad\u30fc\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a\u3057\u3066\u8981\u7d20\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u9023\u60f3\u914d\u5217\u3078\u306e\u8981\u7d20\u8ffd\u52a0\u306e\u57fa\u672c\u69cb\u6587\n$array[key] = $value;\n\n\/\/ \u4f7f\u7528\u4f8b\n$user = [\n    \"name\" =&gt; \"\u7530\u4e2d\u4e00\u90ce\",\n    \"email\" =&gt; \"tanaka@example.com\"\n];\n\n\/\/ \u65b0\u3057\u3044\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3092\u8ffd\u52a0\n$user[\"age\"] = 28;\n$user[\"location\"] = \"\u6771\u4eac\";\n\nprint_r($user);\n\/\/ \u51fa\u529b: \n\/\/ Array (\n\/\/     [name] =&gt; \u7530\u4e2d\u4e00\u90ce\n\/\/     [email] =&gt; tanaka@example.com\n\/\/     [age] =&gt; 28\n\/\/     [location] =&gt; \u6771\u4eac\n\/\/ )\n<\/pre>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u3078\u306e\u8981\u7d20\u8ffd\u52a0\u306e\u7279\u5fb4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ad\u30fc\u3068\u3057\u3066\u6587\u5b57\u5217\u3084\u6574\u6570\u3092\u81ea\u7531\u306b\u6307\u5b9a\u3067\u304d\u307e\u3059<\/li>\n\n\n\n<li>\u65e2\u5b58\u306e\u30ad\u30fc\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u3001\u5024\u304c\u4e0a\u66f8\u304d\u3055\u308c\u307e\u3059<\/li>\n\n\n\n<li>\u30ad\u30fc\u306b\u306f\u65e5\u672c\u8a9e\u306a\u3069\u306e\u30de\u30eb\u30c1\u30d0\u30a4\u30c8\u6587\u5b57\u3082\u4f7f\u7528\u53ef\u80fd\u3067\u3059<\/li>\n\n\n\n<li>\u52d5\u7684\u306b\u30ad\u30fc\u3092\u751f\u6210\u3057\u3066\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u52d5\u7684\u306a\u30ad\u30fc\u751f\u6210\u306e\u4f8b\n$config = [];\n$prefix = \"app_\";\n$config[$prefix . \"name\"] = \"MyApplication\";\n$config[$prefix . \"version\"] = \"1.0.3\";\n$config[$prefix . \"debug\"] = true;\n\nprint_r($config);\n\/\/ \u51fa\u529b:\n\/\/ Array (\n\/\/     [app_name] =&gt; MyApplication\n\/\/     [app_version] =&gt; 1.0.3\n\/\/     [app_debug] =&gt; 1\n\/\/ )\n<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u57fa\u672c\u7684\u306a\u65b9\u6cd5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u307b\u3068\u3093\u3069\u306e\u914d\u5217\u64cd\u4f5c\u3092\u52b9\u7387\u7684\u306b\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u6700\u9069\u306a\u65b9\u6cd5\u3092\u9078\u3073\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u8907\u6570\u8981\u7d20\u3092\u4e00\u5ea6\u306b\u8ffd\u52a0\u3059\u308b\u5834\u5408<\/strong> \u2192 <code>array_push()<\/code><\/li>\n\n\n\n<li><strong>\u5358\u4e00\u8981\u7d20\u3092\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217\u306e\u672b\u5c3e\u306b\u8ffd\u52a0\u3059\u308b\u5834\u5408<\/strong> \u2192 <code>[]<\/code>\u6f14\u7b97\u5b50<\/li>\n\n\n\n<li><strong>\u7279\u5b9a\u306e\u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3092\u8ffd\u52a0\/\u66f4\u65b0\u3059\u308b\u5834\u5408<\/strong> \u2192 <code>$array[key] = value<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u6b21\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u914d\u5217\u306e\u5148\u982d\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-8\">\u914d\u5217\u306e\u5148\u982d\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<p>\u914d\u5217\u306e\u5148\u982d\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u306b\u306f\u3001\u5c02\u7528\u306e\u95a2\u6570\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u672b\u5c3e\u3078\u306e\u8ffd\u52a0\u3068\u306f\u7570\u306a\u308b\u8003\u616e\u70b9\u304c\u3042\u308b\u305f\u3081\u3001\u305d\u306e\u7279\u6027\u3068\u4f7f\u3044\u65b9\u3092\u3057\u3063\u304b\u308a\u7406\u89e3\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">array_unshift()\u95a2\u6570\u306e\u30d1\u30ef\u30fc\u3092\u6d3b\u7528\u3057\u3088\u3046<\/h3>\n\n\n\n<p><code>array_unshift()<\/code>\u95a2\u6570\u306f\u3001\u914d\u5217\u306e\u5148\u982d\u306b1\u3064\u307e\u305f\u306f\u8907\u6570\u306e\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u6a19\u6e96\u95a2\u6570\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ array_unshift()\u306e\u57fa\u672c\u69cb\u6587\narray_unshift(array &amp;$array, mixed ...$values): int\n\n\/\/ \u4f7f\u7528\u4f8b - 1\u3064\u306e\u8981\u7d20\u3092\u8ffd\u52a0\n$fruits = [\"\u30d0\u30ca\u30ca\", \"\u30ea\u30f3\u30b4\"];\narray_unshift($fruits, \"\u30aa\u30ec\u30f3\u30b8\");\nprint_r($fruits);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; \u30aa\u30ec\u30f3\u30b8 [1] =&gt; \u30d0\u30ca\u30ca [2] =&gt; \u30ea\u30f3\u30b4 )\n\n\/\/ \u8907\u6570\u8981\u7d20\u3092\u4e00\u5ea6\u306b\u8ffd\u52a0\narray_unshift($fruits, \"\u30e1\u30ed\u30f3\", \"\u30d1\u30a4\u30ca\u30c3\u30d7\u30eb\");\nprint_r($fruits);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; \u30e1\u30ed\u30f3 [1] =&gt; \u30d1\u30a4\u30ca\u30c3\u30d7\u30eb [2] =&gt; \u30aa\u30ec\u30f3\u30b8 [3] =&gt; \u30d0\u30ca\u30ca [4] =&gt; \u30ea\u30f3\u30b4 )\n<\/pre>\n\n\n\n<p><code>array_unshift()<\/code>\u306e\u7279\u5fb4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u914d\u5217\u306f\u53c2\u7167\u6e21\u3057\u3067\u64cd\u4f5c\u3055\u308c\u3001\u5143\u306e\u914d\u5217\u304c\u76f4\u63a5\u5909\u66f4\u3055\u308c\u307e\u3059<\/li>\n\n\n\n<li>\u623b\u308a\u5024\u306f\u64cd\u4f5c\u5f8c\u306e\u914d\u5217\u306e\u8981\u7d20\u6570\u3067\u3059<\/li>\n\n\n\n<li>\u6570\u5024\u30ad\u30fc\u3092\u6301\u3064\u8981\u7d20\u306f\u81ea\u52d5\u7684\u306b\u518d\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5316\u3055\u308c\u307e\u3059\uff080\u304b\u3089\u632f\u308a\u76f4\u3057\uff09<\/li>\n\n\n\n<li>\u6587\u5b57\u5217\u30ad\u30fc\u3092\u6301\u3064\u8981\u7d20\u306f\u5f71\u97ff\u3092\u53d7\u3051\u307e\u305b\u3093<\/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=\"\">\/\/ \u30ad\u30fc\u306e\u518d\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5316\u306e\u4f8b\n$mixed = [\n    5 =&gt; \"5\u756a\",\n    \"key\" =&gt; \"\u6587\u5b57\u30ad\u30fc\",\n    10 =&gt; \"10\u756a\"\n];\n\narray_unshift($mixed, \"\u65b0\u8981\u7d20\");\nprint_r($mixed);\n\/* \u51fa\u529b:\nArray (\n    [0] =&gt; \u65b0\u8981\u7d20\n    [1] =&gt; 5\u756a\n    [key] =&gt; \u6587\u5b57\u30ad\u30fc\n    [2] =&gt; 10\u756a\n)\n*\/\n<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u304b\u3089\u5206\u304b\u308b\u3088\u3046\u306b\u3001\u6570\u5024\u30ad\u30fc\uff085\u306810\uff09\u306f0\u304b\u3089\u59cb\u307e\u308b\u9023\u756a\u306b\u632f\u308a\u76f4\u3055\u308c\u307e\u3059\u304c\u3001\u6587\u5b57\u5217\u30ad\u30fc\uff08\u201dkey\u201d\uff09\u306f\u305d\u306e\u307e\u307e\u4fdd\u6301\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">\u5148\u982d\u8ffd\u52a0\u3068\u672b\u5c3e\u8ffd\u52a0\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03<\/h3>\n\n\n\n<p>\u914d\u5217\u306e\u5148\u982d\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u64cd\u4f5c\u306f\u3001\u672b\u5c3e\u306b\u8ffd\u52a0\u3059\u308b\u3088\u308a\u3082\u51e6\u7406\u8ca0\u8377\u304c\u9ad8\u3044\u3068\u3044\u3046\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u5185\u90e8\u7684\u306a\u52d5\u4f5c\u306e\u9055\u3044\u306b\u3088\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n<div id=\"id-00ea2f2c-225d-4619-b080-d0f399e53dcf\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u64cd\u4f5c<\/th><th>\u5185\u90e8\u52d5\u4f5c<\/th><th>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/th><th>\u9069\u3057\u305f\u4f7f\u7528\u5834\u9762<\/th><\/tr><\/thead><tbody><tr><td><strong>\u672b\u5c3e\u8ffd\u52a0<\/strong>&lt;br&gt;(<code>array_push()<\/code>\/<code>[]<\/code>)<\/td><td>\u914d\u5217\u306e\u672b\u5c3e\u306b\u76f4\u63a5\u8ffd\u52a0<\/td><td>\u975e\u5e38\u306b\u9ad8\u901f&lt;br&gt;(\u307b\u307cO(1)\u306e\u5b9a\u6570\u6642\u9593)<\/td><td>\u30fb\u5927\u898f\u6a21\u914d\u5217&lt;br&gt;\u30fb\u983b\u7e41\u306a\u8ffd\u52a0\u64cd\u4f5c&lt;br&gt;\u30fb\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u91cd\u8981\u306a\u5834\u9762<\/td><\/tr><tr><td><strong>\u5148\u982d\u8ffd\u52a0<\/strong>&lt;br&gt;(<code>array_unshift()<\/code>)<\/td><td>\u65e2\u5b58\u8981\u7d20\u3092\u30e1\u30e2\u30ea\u5185\u3067\u79fb\u52d5\u3055\u305b\u3066\u304b\u3089\u633f\u5165<\/td><td>\u6bd4\u8f03\u7684\u4f4e\u901f&lt;br&gt;(O(n)\u306e\u7dda\u5f62\u6642\u9593)<\/td><td>\u30fb\u5c0f\u301c\u4e2d\u898f\u6a21\u914d\u5217&lt;br&gt;\u30fb\u8ffd\u52a0\u983b\u5ea6\u304c\u4f4e\u3044\u5834\u9762&lt;br&gt;\u30fb\u9806\u5e8f\u304c\u91cd\u8981\u306a\u5834\u9762<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u7c21\u5358\u306a\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046:<\/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=\"\">\/\/ 10,000\u8981\u7d20\u306e\u914d\u5217\u3092\u7528\u610f\n$largeArray = range(1, 10000);\n\n\/\/ \u672b\u5c3e\u8ffd\u52a0\u306e\u51e6\u7406\u6642\u9593\u8a08\u6e2c\n$start = microtime(true);\narray_push($largeArray, 'new');\necho \"array_push: \" . (microtime(true) - $start) . \"\u79d2\\n\";\n\/\/ \u51fa\u529b\u4f8b: array_push: 0.000024\u79d2\n\n\/\/ \u5148\u982d\u8ffd\u52a0\u306e\u51e6\u7406\u6642\u9593\u8a08\u6e2c\n$start = microtime(true);\narray_unshift($largeArray, 'new');\necho \"array_unshift: \" . (microtime(true) - $start) . \"\u79d2\\n\";\n\/\/ \u51fa\u529b\u4f8b: array_unshift: 0.002163\u79d2\n<\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u540c\u3058\u914d\u5217\u306b\u5bfe\u3059\u308b\u64cd\u4f5c\u3067\u3082\u3001<code>array_unshift()<\/code>\u306f<code>array_push()<\/code>\u306e\u7d04100\u500d\u306e\u6642\u9593\u304c\u304b\u304b\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30d2\u30f3\u30c8<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5927\u898f\u6a21\u914d\u5217\u3067\u983b\u7e41\u306b\u5148\u982d\u8ffd\u52a0\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001<code>SplDoublyLinkedList<\/code>\u306a\u3069\u306e\u5c02\u7528\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u4f7f\u7528\u3092\u691c\u8a0e\u3057\u307e\u3057\u3087\u3046<\/li>\n\n\n\n<li>\u30ad\u30fc\u304c\u91cd\u8981\u3067\u306a\u3044\u5834\u5408\u306f\u3001\u914d\u5217\u3092\u9006\u9806\u306b\u3057\u3066\u672b\u5c3e\u306b\u8ffd\u52a0\u3057\u3001\u51e6\u7406\u5f8c\u306b\u518d\u5ea6\u9006\u9806\u306b\u3059\u308b\u65b9\u6cd5\u3082\u6709\u52b9\u3067\u3059<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5927\u91cf\u306e\u5148\u982d\u8ffd\u52a0\u304c\u5fc5\u8981\u306a\u5834\u5408\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\n$array = [1, 2, 3, 4, 5];\n$elementsToAdd = ['A', 'B', 'C'];\n\n\/\/ \u76f4\u63a5unshift\u3059\u308b\u3088\u308a\u52b9\u7387\u7684\u306a\u65b9\u6cd5\n$array = array_merge($elementsToAdd, $array);\nprint_r($array);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; A [1] =&gt; B [2] =&gt; C [3] =&gt; 1 [4] =&gt; 2 [5] =&gt; 3 [6] =&gt; 4 [7] =&gt; 5 )\n<\/pre>\n\n\n\n<p>\u5148\u982d\u8ffd\u52a0\u64cd\u4f5c\u306f\u3001\u3044\u3064\u3082\u306e\u914d\u5217\u64cd\u4f5c\u306e\u4e2d\u3067\u306f\u5c11\u3057\u7279\u6b8a\u306a\u4f4d\u7f6e\u3065\u3051\u3067\u3059\u304c\u3001\u9806\u5e8f\u304c\u91cd\u8981\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3067\u3059\u3002\u7528\u9014\u3068\u914d\u5217\u30b5\u30a4\u30ba\u306b\u5408\u308f\u305b\u3066\u6700\u9069\u306a\u65b9\u6cd5\u3092\u9078\u3073\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-11\">\u914d\u5217\u306e\u7279\u5b9a\u306e\u4f4d\u7f6e\u306b\u8981\u7d20\u3092\u633f\u5165\u3059\u308b\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u914d\u5217\u306e\u5148\u982d\u3084\u672b\u5c3e\u3067\u306f\u306a\u304f\u3001\u7279\u5b9a\u306e\u4f4d\u7f6e\uff08\u4e2d\u9593\uff09\u306b\u8981\u7d20\u3092\u633f\u5165\u3057\u305f\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002PHP\u3067\u306f\u3053\u306e\u64cd\u4f5c\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u5f37\u529b\u306a\u95a2\u6570\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">array_splice()\u95a2\u6570\u3067\u30d4\u30f3\u30dd\u30a4\u30f3\u30c8\u633f\u5165\u3092\u5b9f\u73fe<\/h3>\n\n\n\n<p><code>array_splice()<\/code>\u95a2\u6570\u306f\u672c\u6765\u3001\u914d\u5217\u306e\u4e00\u90e8\u3092\u524a\u9664\u3057\u3066\u4ed6\u306e\u8981\u7d20\u3068\u7f6e\u304d\u63db\u3048\u308b\u305f\u3081\u306e\u95a2\u6570\u3067\u3059\u304c\u3001\u524a\u9664\u305b\u305a\u306b\u633f\u5165\u3059\u308b\u3068\u3044\u3046\u7528\u9014\u306b\u3082\u6d3b\u7528\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=\"\">\/\/ array_splice()\u306e\u57fa\u672c\u69cb\u6587\narray_splice(array &amp;$array, int $offset, ?int $length = null, mixed $replacement = []): array\n\n\/\/ \u7279\u5b9a\u4f4d\u7f6e\u3078\u306e\u8981\u7d20\u633f\u5165\uff08\u524a\u9664\u306a\u3057\uff09\u306e\u57fa\u672c\u30d1\u30bf\u30fc\u30f3\narray_splice($array, $position, 0, $new_element);\n<\/pre>\n\n\n\n<p><code>array_splice()<\/code>\u306b\u3088\u308b\u633f\u5165\u306e\u7279\u5fb4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>$position<\/code>: \u633f\u5165\u4f4d\u7f6e\uff08\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\uff09<\/li>\n\n\n\n<li>\u7b2c3\u5f15\u6570\u306b<code>0<\/code>\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u524a\u9664\u305b\u305a\u306b\u633f\u5165\u306e\u307f\u3092\u884c\u3044\u307e\u3059<\/li>\n\n\n\n<li>\u7b2c4\u5f15\u6570\u306b\u633f\u5165\u3057\u305f\u3044\u8981\u7d20\u3092\u6307\u5b9a\u3057\u307e\u3059\uff08\u5358\u4e00\u8981\u7d20\u307e\u305f\u306f\u914d\u5217\uff09<\/li>\n\n\n\n<li>\u623b\u308a\u5024\u306f\u524a\u9664\u3055\u308c\u305f\u8981\u7d20\u306e\u914d\u5217\u3067\u3059\u304c\u3001\u4e0a\u8a18\u306e\u5834\u5408\u306f\u7a7a\u914d\u5217\u306b\u306a\u308a\u307e\u3059<\/li>\n<\/ul>\n\n\n\n<p>\u5b9f\u969b\u306e\u4f7f\u7528\u4f8b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046:<\/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=\"\">\/\/ \u914d\u5217\u306e3\u756a\u76ee\u306e\u4f4d\u7f6e\uff08\u30a4\u30f3\u30c7\u30c3\u30af\u30b92\uff09\u306b\u8981\u7d20\u3092\u633f\u5165\n$fruits = [\"\u308a\u3093\u3054\", \"\u30d0\u30ca\u30ca\", \"\u30aa\u30ec\u30f3\u30b8\", \"\u3076\u3069\u3046\"];\narray_splice($fruits, 2, 0, \"\u30e1\u30ed\u30f3\");\nprint_r($fruits);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; \u308a\u3093\u3054 [1] =&gt; \u30d0\u30ca\u30ca [2] =&gt; \u30e1\u30ed\u30f3 [3] =&gt; \u30aa\u30ec\u30f3\u30b8 [4] =&gt; \u3076\u3069\u3046 )\n\n\/\/ \u8907\u6570\u8981\u7d20\u3092\u540c\u6642\u306b\u633f\u5165\u3059\u308b\u5834\u5408\u306f\u914d\u5217\u3068\u3057\u3066\u6307\u5b9a\n$colors = [\"\u8d64\", \"\u9752\", \"\u7dd1\"];\narray_splice($colors, 1, 0, [\"\u9ec4\", \"\u7d2b\"]);\nprint_r($colors);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; \u8d64 [1] =&gt; \u9ec4 [2] =&gt; \u7d2b [3] =&gt; \u9752 [4] =&gt; \u7dd1 )\n<\/pre>\n\n\n\n<p>\u8ca0\u306e\u30aa\u30d5\u30bb\u30c3\u30c8\u5024\u3092\u4f7f\u7528\u3057\u3066\u3001\u672b\u5c3e\u304b\u3089\u306e\u4f4d\u7f6e\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059:<\/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=\"\">\/\/ \u672b\u5c3e\u304b\u30892\u756a\u76ee\u306e\u4f4d\u7f6e\u306b\u8981\u7d20\u3092\u633f\u5165\n$numbers = [1, 2, 3, 4, 5];\narray_splice($numbers, -1, 0, 99);\nprint_r($numbers);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; 1 [1] =&gt; 2 [2] =&gt; 3 [3] =&gt; 4 [4] =&gt; 99 [5] =&gt; 5 )\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u6307\u5b9a\u3057\u3066\u633f\u5165\u3059\u308b\u969b\u306e\u6ce8\u610f\u70b9<\/h3>\n\n\n\n<p><code>array_splice()<\/code>\u3092\u4f7f\u3063\u3066\u914d\u5217\u306b\u8981\u7d20\u3092\u633f\u5165\u3059\u308b\u969b\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u6ce8\u610f\u3059\u3079\u304d\u70b9\u304c\u3042\u308a\u307e\u3059:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u518d\u5272\u308a\u5f53\u3066<\/strong>: \u633f\u5165\u64cd\u4f5c\u306e\u5f8c\u3001\u6570\u5024\u30ad\u30fc\u306f\u518d\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5316\u3055\u308c\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u633f\u5165\u4f4d\u7f6e\u4ee5\u964d\u306e\u8981\u7d20\u306e\u30ad\u30fc\u306f\u81ea\u52d5\u7684\u306b\u5897\u52a0\u3057\u307e\u3059\u3002 <code>$indexed = [ 5 =&gt; \"A\", 10 =&gt; \"B\", 15 =&gt; \"C\" ]; array_splice($indexed, 1, 0, \"X\"); print_r($indexed); \/* \u51fa\u529b: Array ( [0] =&gt; A [1] =&gt; X [2] =&gt; B [3] =&gt; C ) *\/<\/code> \u5143\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5024\u304c\u5931\u308f\u308c\u30010\u304b\u3089\u9023\u756a\u3067\u632f\u308a\u76f4\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n\n\n\n<li><strong>\u9023\u60f3\u914d\u5217\u3068\u306e\u76f8\u6027<\/strong>: <code>array_splice()<\/code>\u306f\u4e3b\u306b\u6570\u5024\u30ad\u30fc\u306e\u914d\u5217\u5411\u3051\u3067\u3059\u3002\u9023\u60f3\u914d\u5217\uff08\u6587\u5b57\u5217\u30ad\u30fc\uff09\u306b\u4f7f\u7528\u3059\u308b\u3068\u3001\u6587\u5b57\u5217\u30ad\u30fc\u304c\u4fdd\u6301\u3055\u308c\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 <code>\/\/ \u9023\u60f3\u914d\u5217\u3078\u306e\u633f\u5165\u306f\u6ce8\u610f\u304c\u5fc5\u8981 $person = [ \"name\" =&gt; \"\u7530\u4e2d\", \"age\" =&gt; 30, \"city\" =&gt; \"\u6771\u4eac\" ]; \/\/ \u3053\u306e\u64cd\u4f5c\u306f\u610f\u56f3\u3057\u305f\u7d50\u679c\u306b\u306a\u3089\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308b array_splice($person, 1, 0, [\"email\" =&gt; \"tanaka@example.com\"]); print_r($person);<\/code><\/li>\n\n\n\n<li><strong>\u5883\u754c\u5024\u306e\u53d6\u308a\u6271\u3044<\/strong>: \u6307\u5b9a\u3057\u305f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u914d\u5217\u306e\u7bc4\u56f2\u5916\u306e\u5834\u5408\u3001PHP\u306f\u8b66\u544a\u3092\u767a\u3057\u307e\u3059\u304c\u3001\u53ef\u80fd\u306a\u9650\u308a\u64cd\u4f5c\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002 <code>\/\/ \u7bc4\u56f2\u5916\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408 $letters = [\"A\", \"B\", \"C\"]; array_splice($letters, 10, 0, \"Z\"); \/\/ \u8b66\u544a\u304c\u51fa\u308b\u53ef\u80fd\u6027\u3042\u308a print_r($letters); \/\/ \u51fa\u529b: Array ( [0] =&gt; A [1] =&gt; B [2] =&gt; C [3] =&gt; Z )<\/code><\/li>\n<\/ol>\n\n\n\n<p>\u3088\u308a\u5b89\u5168\u306a\u4ee3\u66ff\u65b9\u6cd5\u3068\u3057\u3066\u3001\u914d\u5217\u3092\u5206\u5272\u3057\u3066\u518d\u7d50\u5408\u3059\u308b\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ array_slice\u3068array_merge\u3092\u4f7f\u3063\u305f\u5b89\u5168\u306a\u633f\u5165\u65b9\u6cd5\nfunction insertAt($array, $position, $insert) {\n    \/\/ \u914d\u5217\u3092\u5206\u5272\n    $first_part = array_slice($array, 0, $position);\n    $last_part = array_slice($array, $position);\n    \n    \/\/ \u633f\u5165\u8981\u7d20\u304c\u914d\u5217\u3067\u306a\u3044\u5834\u5408\u306f\u914d\u5217\u306b\u5909\u63db\n    if (!is_array($insert)) {\n        $insert = [$insert];\n    }\n    \n    \/\/ \u5206\u5272\u3057\u305f\u914d\u5217\u3068\u633f\u5165\u8981\u7d20\u3092\u7d50\u5408\n    return array_merge($first_part, $insert, $last_part);\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$data = [1, 2, 3, 4];\n$result = insertAt($data, 2, [\"X\", \"Y\"]);\nprint_r($result);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; 1 [1] =&gt; 2 [2] =&gt; X [3] =&gt; Y [4] =&gt; 3 [5] =&gt; 4 )\n<\/pre>\n\n\n\n<p>\u914d\u5217\u306e\u7279\u5b9a\u4f4d\u7f6e\u3078\u306e\u8981\u7d20\u633f\u5165\u306f\u3001\u30c7\u30fc\u30bf\u306e\u9806\u5e8f\u3084\u69cb\u9020\u3092\u64cd\u4f5c\u3059\u308b\u4e0a\u3067\u975e\u5e38\u306b\u4fbf\u5229\u306a\u6a5f\u80fd\u3067\u3059\u3002\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u6700\u9069\u306a\u65b9\u6cd5\u3092\u9078\u629e\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-14\">\u8907\u6570\u306e\u914d\u5217\u3092\u7d50\u5408\u3059\u308b\u52b9\u679c\u7684\u306a\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u8907\u6570\u306e\u914d\u5217\u3092\u4e00\u3064\u306b\u307e\u3068\u3081\u308b\u64cd\u4f5c\u306f\u3001\u30c7\u30fc\u30bf\u51e6\u7406\u306b\u304a\u3044\u3066\u983b\u7e41\u306b\u5fc5\u8981\u3068\u3055\u308c\u307e\u3059\u3002PHP\u3067\u306f\u3053\u306e\u64cd\u4f5c\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u8907\u6570\u306e\u65b9\u6cd5\u304c\u7528\u610f\u3055\u308c\u3066\u304a\u308a\u3001\u7528\u9014\u306b\u5fdc\u3058\u3066\u6700\u9069\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u9078\u629e\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">array_merge()\u3067\u8907\u6570\u914d\u5217\u3092\u7c21\u5358\u306b\u7d50\u5408<\/h3>\n\n\n\n<p><code>array_merge()<\/code>\u95a2\u6570\u306f\u30012\u3064\u4ee5\u4e0a\u306e\u914d\u5217\u3092\u7d50\u5408\u3057\u3066\u65b0\u3057\u3044\u914d\u5217\u3092\u4f5c\u6210\u3059\u308b\u6700\u3082\u4e00\u822c\u7684\u306a\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ array_merge()\u306e\u57fa\u672c\u69cb\u6587\narray_merge(array ...$arrays): array\n\n\/\/ \u57fa\u672c\u7684\u306a\u4f7f\u7528\u4f8b\n$array1 = [\"\u8d64\", \"\u9752\"];\n$array2 = [\"\u7dd1\", \"\u9ec4\"];\n$result = array_merge($array1, $array2);\nprint_r($result);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; \u8d64 [1] =&gt; \u9752 [2] =&gt; \u7dd1 [3] =&gt; \u9ec4 )\n\n\/\/ 3\u3064\u4ee5\u4e0a\u306e\u914d\u5217\u3082\u7d50\u5408\u53ef\u80fd\n$array3 = [\"\u7d2b\", \"\u6a59\"];\n$result = array_merge($array1, $array2, $array3);\nprint_r($result);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; \u8d64 [1] =&gt; \u9752 [2] =&gt; \u7dd1 [3] =&gt; \u9ec4 [4] =&gt; \u7d2b [5] =&gt; \u6a59 )\n<\/pre>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u3092\u7d50\u5408\u3059\u308b\u5834\u5408\u3001\u540c\u3058\u30ad\u30fc\u3092\u6301\u3064\u8981\u7d20\u306f\u5f8c\u306e\u914d\u5217\u306e\u5024\u3067\u4e0a\u66f8\u304d\u3055\u308c\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u9023\u60f3\u914d\u5217\u306e\u7d50\u5408\u3068\u4e0a\u66f8\u304d\n$user1 = [\"name\" =&gt; \"\u7530\u4e2d\", \"age\" =&gt; 25];\n$user2 = [\"email\" =&gt; \"tanaka@example.com\", \"age\" =&gt; 30];\n$mergedUser = array_merge($user1, $user2);\nprint_r($mergedUser);\n\/* \u51fa\u529b:\nArray (\n    [name] =&gt; \u7530\u4e2d\n    [age] =&gt; 30\n    [email] =&gt; tanaka@example.com\n)\n*\/\n<\/pre>\n\n\n\n<p><strong>\u6ce8\u610f\u70b9<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6570\u5024\u30ad\u30fc\u306f\u81ea\u52d5\u7684\u306b\u518d\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5316\u3055\u308c\u307e\u3059\uff080\u304b\u3089\u9806\u756a\u306b\u632f\u308a\u76f4\u3055\u308c\u307e\u3059\uff09<\/li>\n\n\n\n<li>\u6587\u5b57\u5217\u30ad\u30fc\u304c\u91cd\u8907\u3059\u308b\u5834\u5408\u3001\u5f8c\u306e\u914d\u5217\u306e\u5024\u304c\u512a\u5148\u3055\u308c\u307e\u3059<\/li>\n\n\n\n<li>\u5f15\u6570\u306b\u914d\u5217\u4ee5\u5916\u304c\u6e21\u3055\u308c\u308b\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">array_combine()\u3067\u30ad\u30fc\u3068\u5024\u306e\u914d\u5217\u304b\u3089\u65b0\u3057\u3044\u914d\u5217\u3092\u4f5c\u6210<\/h3>\n\n\n\n<p><code>array_combine()<\/code>\u95a2\u6570\u306f\u30012\u3064\u306e\u914d\u5217\u304b\u3089\u9023\u60f3\u914d\u5217\u3092\u4f5c\u6210\u3057\u307e\u3059\u30021\u3064\u76ee\u306e\u914d\u5217\u304c\u30ad\u30fc\u3068\u3057\u3066\u30012\u3064\u76ee\u306e\u914d\u5217\u304c\u5024\u3068\u3057\u3066\u4f7f\u7528\u3055\u308c\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=\"\">\/\/ array_combine()\u306e\u57fa\u672c\u69cb\u6587\narray_combine(array $keys, array $values): array\n\n\/\/ \u57fa\u672c\u7684\u306a\u4f7f\u7528\u4f8b\n$keys = [\"name\", \"email\", \"phone\"];\n$values = [\"\u4f50\u85e4\", \"sato@example.com\", \"090-1234-5678\"];\n$person = array_combine($keys, $values);\nprint_r($person);\n\/* \u51fa\u529b:\nArray (\n    [name] =&gt; \u4f50\u85e4\n    [email] =&gt; sato@example.com\n    [phone] =&gt; 090-1234-5678\n)\n*\/\n<\/pre>\n\n\n\n<p>\u3053\u306e\u95a2\u6570\u306f\u6b21\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u7279\u306b\u4fbf\u5229\u3067\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30ab\u30e9\u30e0\u540d\u3068\u305d\u306e\u5024\u3092\u95a2\u9023\u4ed8\u3051\u308b<\/li>\n\n\n\n<li>\u30d5\u30a9\u30fc\u30e0\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u540d\u3068\u5165\u529b\u5024\u3092\u30de\u30c3\u30d4\u30f3\u30b0\u3059\u308b<\/li>\n\n\n\n<li>2\u3064\u306e\u95a2\u9023\u30c7\u30fc\u30bf\u914d\u5217\u304b\u3089\u8f9e\u66f8\u3092\u4f5c\u6210\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<p><strong>\u91cd\u8981\u306a\u6761\u4ef6<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e21\u65b9\u306e\u914d\u5217\u306f\u540c\u3058\u8981\u7d20\u6570\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\uff08\u305d\u3046\u3067\u306a\u3044\u5834\u5408\u306f\u30a8\u30e9\u30fc\uff09<\/li>\n\n\n\n<li>\u30ad\u30fc\u3068\u3057\u3066\u4f7f\u7528\u3055\u308c\u308b\u914d\u5217\u306e\u8981\u7d20\u306f\u6587\u5b57\u5217\u307e\u305f\u306f\u6570\u5024\u306b\u5909\u63db\u53ef\u80fd\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u30b9\u30d7\u30ec\u30c3\u30c9\u6f14\u7b97\u5b50(\u2026)\u3092\u4f7f\u3063\u305f\u914d\u5217\u7d50\u5408\uff08PHP 7.4\u4ee5\u964d\uff09<\/h3>\n\n\n\n<p>PHP 7.4\u4ee5\u964d\u3067\u306f\u3001JavaScript\u98a8\u306e\u30b9\u30d7\u30ec\u30c3\u30c9\u6f14\u7b97\u5b50\uff08<code>...<\/code>\uff09\u3092\u4f7f\u3063\u3066\u914d\u5217\u3092\u7d50\u5408\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u65b9\u6cd5\u306f\u7279\u306b\u53ef\u8aad\u6027\u306b\u512a\u308c\u3066\u3044\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=\"\">\/\/ \u30b9\u30d7\u30ec\u30c3\u30c9\u6f14\u7b97\u5b50\u306b\u3088\u308b\u914d\u5217\u7d50\u5408\n$fruits = [\"\u308a\u3093\u3054\", \"\u30d0\u30ca\u30ca\"];\n$vegetables = [\"\u30c8\u30de\u30c8\", \"\u30ad\u30e5\u30a6\u30ea\"];\n$foods = [...$fruits, ...$vegetables];\nprint_r($foods);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; \u308a\u3093\u3054 [1] =&gt; \u30d0\u30ca\u30ca [2] =&gt; \u30c8\u30de\u30c8 [3] =&gt; \u30ad\u30e5\u30a6\u30ea )\n\n\/\/ \u500b\u5225\u306e\u8981\u7d20\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3082\u53ef\u80fd\n$combined = [\"\u6700\u521d\", ...$fruits, \"\u4e2d\u9593\", ...$vegetables, \"\u6700\u5f8c\"];\nprint_r($combined);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; \u6700\u521d [1] =&gt; \u308a\u3093\u3054 [2] =&gt; \u30d0\u30ca\u30ca [3] =&gt; \u4e2d\u9593 [4] =&gt; \u30c8\u30de\u30c8 [5] =&gt; \u30ad\u30e5\u30a6\u30ea [6] =&gt; \u6700\u5f8c )\n<\/pre>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u3067\u3082\u540c\u69d8\u306b\u4f7f\u7528\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u9023\u60f3\u914d\u5217\u3067\u306e\u30b9\u30d7\u30ec\u30c3\u30c9\u6f14\u7b97\u5b50\n$defaults = [\"color\" =&gt; \"\u9752\", \"size\" =&gt; \"\u4e2d\"];\n$options = [\"size\" =&gt; \"\u5927\", \"material\" =&gt; \"\u7dbf\"];\n$settings = [...$defaults, ...$options];\nprint_r($settings);\n\/* \u51fa\u529b:\nArray (\n    [color] =&gt; \u9752\n    [size] =&gt; \u5927\n    [material] =&gt; \u7dbf\n)\n*\/\n<\/pre>\n\n\n\n<p>\u30b9\u30d7\u30ec\u30c3\u30c9\u6f14\u7b97\u5b50\u306e\u7279\u5fb4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>array_merge()<\/code>\u3068\u57fa\u672c\u7684\u306b\u540c\u3058\u52d5\u4f5c<\/li>\n\n\n\n<li>\u3088\u308a\u76f4\u611f\u7684\u3067\u8aad\u307f\u3084\u3059\u3044\u69cb\u6587<\/li>\n\n\n\n<li>\u8981\u7d20\u3068\u914d\u5217\u3092\u81ea\u7531\u306b\u7d44\u307f\u5408\u308f\u305b\u3084\u3059\u3044<\/li>\n\n\n\n<li>\u30e2\u30c0\u30f3\u306aPHP\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u969b\u306b\u63a8\u5968\u3055\u308c\u308b\u65b9\u6cd5<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">\u5404\u7d50\u5408\u65b9\u6cd5\u306e\u6bd4\u8f03\u3068\u9078\u629e\u57fa\u6e96<\/h3>\n\n\n\n<p>\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u6700\u9069\u306a\u914d\u5217\u7d50\u5408\u65b9\u6cd5\u3092\u9078\u3073\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n<div id=\"id-b19765b9-7c1c-46a7-98dc-924194531c62\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u65b9\u6cd5<\/th><th>\u4e3b\u306a\u7528\u9014<\/th><th>\u7279\u5fb4<\/th><th>PHP\u8981\u4ef6<\/th><\/tr><\/thead><tbody><tr><td><strong>array_merge()<\/strong><\/td><td>\u6c4e\u7528\u7684\u306a\u914d\u5217\u7d50\u5408<\/td><td>\u30fb\u8907\u6570\u914d\u5217\u306e\u7d50\u5408&lt;br&gt;\u30fb\u6570\u5024\u30ad\u30fc\u306e\u518d\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5316&lt;br&gt;\u30fb\u540c\u540d\u30ad\u30fc\u306f\u5f8c\u8005\u512a\u5148<\/td><td>PHP 4\u4ee5\u964d<\/td><\/tr><tr><td><strong>array_combine()<\/strong><\/td><td>\u30ad\u30fc\u3068\u5024\u306e\u30de\u30c3\u30d4\u30f3\u30b0<\/td><td>\u30fb2\u3064\u306e\u914d\u5217\u304b\u3089\u306e\u9023\u60f3\u914d\u5217\u4f5c\u6210&lt;br&gt;\u30fb\u540c\u6570\u306e\u8981\u7d20\u304c\u5fc5\u8981<\/td><td>PHP 5\u4ee5\u964d<\/td><\/tr><tr><td><strong>\u30b9\u30d7\u30ec\u30c3\u30c9\u6f14\u7b97\u5b50<\/strong><\/td><td>\u30e2\u30c0\u30f3\u306a\u914d\u5217\u7d50\u5408<\/td><td>\u30fb\u76f4\u611f\u7684\u306a\u69cb\u6587&lt;br&gt;\u30fb\u67d4\u8edf\u306a\u7d44\u307f\u5408\u308f\u305b&lt;br&gt;\u30fb\u914d\u5217\u3068\u5358\u4e00\u8981\u7d20\u306e\u6df7\u5408<\/td><td>PHP 7.4\u4ee5\u964d<\/td><\/tr><tr><td><strong>+(\u30d7\u30e9\u30b9\u6f14\u7b97\u5b50)<\/strong><\/td><td>\u30ad\u30fc\u4fdd\u6301\u304c\u5fc5\u8981\u306a\u5834\u5408<\/td><td>\u30fb\u6570\u5024\u30ad\u30fc\u3092\u4fdd\u6301&lt;br&gt;\u30fb\u540c\u540d\u30ad\u30fc\u306f\u524d\u8005\u512a\u5148&lt;br&gt;\u30fb<code>array_merge()<\/code>\u3068\u53cd\u5bfe\u306e\u6319\u52d5<\/td><td>\u3059\u3079\u3066\u306e\u30d0\u30fc\u30b8\u30e7\u30f3<\/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=\"\">\/\/ +\u6f14\u7b97\u5b50\u3068array_merge()\u306e\u9055\u3044\n$a = [\"a\" =&gt; \"A\", \"b\" =&gt; \"B\", 0 =&gt; \"X\"];\n$b = [\"b\" =&gt; \"NEW B\", \"c\" =&gt; \"C\", 0 =&gt; \"Y\"];\n\n\/\/ +\u6f14\u7b97\u5b50\uff1a\u540c\u540d\u30ad\u30fc\u306f\u524d\u8005\u512a\u5148\n$plus = $a + $b;\nprint_r($plus);\n\/* \u51fa\u529b:\nArray (\n    [a] =&gt; A\n    [b] =&gt; B\n    [0] =&gt; X\n    [c] =&gt; C\n)\n*\/\n\n\/\/ array_merge()\uff1a\u540c\u540d\u30ad\u30fc\u306f\u5f8c\u8005\u512a\u5148\n$merge = array_merge($a, $b);\nprint_r($merge);\n\/* \u51fa\u529b:\nArray (\n    [a] =&gt; A\n    [b] =&gt; NEW B\n    [0] =&gt; X\n    [1] =&gt; Y\n    [c] =&gt; C\n)\n*\/\n<\/pre>\n\n\n\n<p>PHP\u3067\u306e\u914d\u5217\u7d50\u5408\u306f\u975e\u5e38\u306b\u67d4\u8edf\u3067\u3042\u308a\u3001\u591a\u69d8\u306a\u30b7\u30ca\u30ea\u30aa\u306b\u5bfe\u5fdc\u53ef\u80fd\u3067\u3059\u3002\u65e2\u5b58\u306e\u30c7\u30fc\u30bf\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u65b0\u3057\u3044\u69cb\u9020\u3092\u4f5c\u308b\u969b\u306b\u306f\u3001\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u4f7f\u3044\u5206\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-19\">\u6761\u4ef6\u4ed8\u304d\u3067\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<p>\u5b9f\u969b\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3067\u306f\u3001\u5358\u7d14\u306b\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u7279\u5b9a\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3059\u5834\u5408\u306b\u306e\u307f\u8ffd\u52a0\u3057\u305f\u3044\u30b1\u30fc\u30b9\u304c\u983b\u7e41\u306b\u3042\u308a\u307e\u3059\u3002PHP\u306b\u306f\u3001\u3053\u306e\u3088\u3046\u306a\u6761\u4ef6\u4ed8\u304d\u8ffd\u52a0\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u4fbf\u5229\u306a\u95a2\u6570\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">\u91cd\u8907\u30c1\u30a7\u30c3\u30af\u3092\u3057\u3066\u304b\u3089\u8ffd\u52a0\u3059\u308bin_array()\u306e\u6d3b\u7528\u6cd5<\/h3>\n\n\n\n<p><code>in_array()<\/code>\u95a2\u6570\u306f\u3001\u914d\u5217\u5185\u306b\u7279\u5b9a\u306e\u5024\u304c\u5b58\u5728\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u91cd\u8907\u306e\u306a\u3044\u914d\u5217\u3092\u7c21\u5358\u306b\u4f5c\u6210\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=\"\">\/\/ in_array()\u306e\u57fa\u672c\u69cb\u6587\nin_array(mixed $needle, array $haystack, bool $strict = false): bool\n\n\/\/ \u91cd\u8907\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u304b\u3089\u8ffd\u52a0\u3059\u308b\u4f8b\n$uniqueFruits = [\"\u308a\u3093\u3054\", \"\u30d0\u30ca\u30ca\", \"\u30aa\u30ec\u30f3\u30b8\"];\n$newFruit = \"\u30d0\u30ca\u30ca\";  \/\/ \u65e2\u306b\u5b58\u5728\u3059\u308b\u8981\u7d20\n\nif (!in_array($newFruit, $uniqueFruits)) {\n    $uniqueFruits[] = $newFruit;\n    echo \"\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f\";\n} else {\n    echo \"\u65e2\u306b\u5b58\u5728\u3057\u307e\u3059\";\n}\n\/\/ \u51fa\u529b: \u65e2\u306b\u5b58\u5728\u3057\u307e\u3059\n\n\/\/ \u53b3\u5bc6\u306a\u578b\u30c1\u30a7\u30c3\u30af\u3092\u6709\u52b9\u306b\u3057\u305f\u4f8b\uff08\u7b2c3\u5f15\u6570\u306btrue\uff09\n$numbers = [1, 2, \"3\"];\nvar_dump(in_array(3, $numbers));       \/\/ bool(true) - \u578b\u5909\u63db\u3042\u308a\nvar_dump(in_array(3, $numbers, true)); \/\/ bool(false) - \u53b3\u5bc6\u306a\u6bd4\u8f03\n<\/pre>\n\n\n\n<p>\u3053\u306e\u95a2\u6570\u3092\u4f7f\u3046\u969b\u306e\u6ce8\u610f\u70b9:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5927\u898f\u6a21\u306a\u914d\u5217\u3067\u306e\u691c\u7d22\u306f\u51e6\u7406\u304c\u9045\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff08\u7dda\u5f62\u63a2\u7d22\u306e\u305f\u3081\uff09<\/li>\n\n\n\n<li>\u5024\u306e\u6bd4\u8f03\u306b\u304a\u3044\u3066\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u578b\u306e\u53b3\u5bc6\u306a\u6bd4\u8f03\u306f\u884c\u308f\u308c\u307e\u305b\u3093\uff08<code>\"3\"<\/code>\u3068<code>3<\/code>\u306f\u7b49\u3057\u3044\u3068\u5224\u5b9a\uff09<\/li>\n\n\n\n<li>\u591a\u6b21\u5143\u914d\u5217\u5185\u306e\u691c\u7d22\u306b\u306f\u9069\u3057\u3066\u3044\u307e\u305b\u3093<\/li>\n<\/ul>\n\n\n\n<p>\u3088\u308a\u52b9\u7387\u7684\u306a\u65b9\u6cd5\u3068\u3057\u3066\u3001\u91cd\u8907\u30c1\u30a7\u30c3\u30af\u7528\u306e\u9023\u60f3\u914d\u5217\u3092\u4f7f\u7528\u3059\u308b\u30d1\u30bf\u30fc\u30f3\u3082\u3042\u308a\u307e\u3059:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30ad\u30fc\u3092\u4f7f\u3063\u3066\u9ad8\u901f\u306b\u91cd\u8907\u30c1\u30a7\u30c3\u30af\u3059\u308b\u65b9\u6cd5\n$uniqueItems = [];\n$uniqueKeys = [];  \/\/ \u91cd\u8907\u30c1\u30a7\u30c3\u30af\u7528\n\n$newItems = [\"A\", \"B\", \"C\", \"A\", \"D\", \"B\"];\n\nforeach ($newItems as $item) {\n    if (!isset($uniqueKeys[$item])) {\n        $uniqueItems[] = $item;\n        $uniqueKeys[$item] = true;\n    }\n}\n\nprint_r($uniqueItems);\n\/\/ \u51fa\u529b: Array ( [0] =&gt; A [1] =&gt; B [2] =&gt; C [3] =&gt; D )\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-21\">isset()\u3068array_key_exists()\u3092\u4f7f\u3063\u305f\u5b89\u5168\u306a\u8ffd\u52a0\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u9023\u60f3\u914d\u5217\u306b\u5bfe\u3057\u3066\u6761\u4ef6\u4ed8\u304d\u3067\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u5834\u5408\u3001<code>isset()<\/code>\u3084<code>array_key_exists()<\/code>\u95a2\u6570\u304c\u5f79\u7acb\u3061\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=\"\">\/\/ isset()\u3068array_key_exists()\u306e\u57fa\u672c\u69cb\u6587\nisset(mixed $var, mixed ...$vars): bool\narray_key_exists(string|int $key, array $array): bool\n\n\/\/ isset()\u3092\u4f7f\u3063\u3066\u30ad\u30fc\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306e\u307f\u8ffd\u52a0\n$userSettings = [\n    \"theme\" =&gt; \"dark\",\n    \"fontSize\" =&gt; 14\n];\n\n\/\/ \u30ad\u30fc\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306e\u307f\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\nif (!isset($userSettings[\"language\"])) {\n    $userSettings[\"language\"] = \"ja\";\n}\n\nprint_r($userSettings);\n\/* \u51fa\u529b:\nArray (\n    [theme] =&gt; dark\n    [fontSize] =&gt; 14\n    [language] =&gt; ja\n)\n*\/\n<\/pre>\n\n\n\n<p><code>isset()<\/code>\u3068<code>array_key_exists()<\/code>\u306e\u9055\u3044\u306f\u3001<code>null<\/code>\u5024\u306e\u6271\u3044\u306b\u3042\u308a\u307e\u3059:<\/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=\"\">\/\/ isset()\u3068array_key_exists()\u306e\u9055\u3044\n$config = [\n    \"debug\" =&gt; true,\n    \"cache\" =&gt; null,\n    \"version\" =&gt; \"1.0\"\n];\n\nvar_dump(isset($config[\"cache\"]));             \/\/ bool(false) - null\u306a\u306e\u3067false\nvar_dump(array_key_exists(\"cache\", $config));  \/\/ bool(true) - \u30ad\u30fc\u306f\u5b58\u5728\u3059\u308b\n<\/pre>\n\n\n\n<p>\u5b9f\u969b\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u95a2\u6570\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u5b89\u5168\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059:<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\u3092\u5b89\u5168\u306b\u51e6\u7406\u3059\u308b\u4f8b\n$formData = $_POST;  \/\/ \u4eee\u306e\u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\n$userData = [];\n\n\/\/ \u5fc5\u9808\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u5b58\u5728\u3057\u3001\u7a7a\u3067\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\nif (isset($formData[\"email\"]) &amp;&amp; $formData[\"email\"] !== \"\") {\n    $userData[\"email\"] = filter_var($formData[\"email\"], FILTER_SANITIZE_EMAIL);\n} else {\n    $errors[] = \"\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306f\u5fc5\u9808\u3067\u3059\";\n}\n\n\/\/ \u30aa\u30d7\u30b7\u30e7\u30f3\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u306e\u307f\u8ffd\u52a0\nif (array_key_exists(\"phone\", $formData) &amp;&amp; $formData[\"phone\"] !== \"\") {\n    $userData[\"phone\"] = preg_replace('\/[^0-9-]\/', '', $formData[\"phone\"]);\n}\n\n\/\/ \u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306e\u8a2d\u5b9a\n$userData[\"createdAt\"] = $userData[\"createdAt\"] ?? date(\"Y-m-d H:i:s\");\n<\/pre>\n\n\n\n<p>\u6761\u4ef6\u4ed8\u304d\u3067\u914d\u5217\u306b\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5805\u7262\u3067\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u95a2\u6570\u3092\u9078\u629e\u3057\u3001\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3092\u4fdd\u3061\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>\u4f7f\u3044\u5206\u3051\u306e\u30d2\u30f3\u30c8<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5358\u7d14\u306a\u5024\u306e\u91cd\u8907\u30c1\u30a7\u30c3\u30af \u2192 <code>in_array()<\/code><\/li>\n\n\n\n<li>\u30ad\u30fc\u306e\u5b58\u5728\u78ba\u8a8d\uff08null\u5024\u3082\u8003\u616e\uff09 \u2192 <code>array_key_exists()<\/code><\/li>\n\n\n\n<li>\u30ad\u30fc\u306e\u5b58\u5728\u78ba\u8a8d\uff08\u9ad8\u901f\u3001null\u306f\u975e\u5b58\u5728\u6271\u3044\uff09 \u2192 <code>isset()<\/code><\/li>\n\n\n\n<li>PHP 7\u4ee5\u964d\u3067\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u8a2d\u5b9a \u2192 Null\u5408\u4f53\u6f14\u7b97\u5b50 <code>??<\/code><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-22\">\u591a\u6b21\u5143\u914d\u5217\u3078\u306e\u8981\u7d20\u8ffd\u52a0\u3068\u64cd\u4f5c\u65b9\u6cd5<\/h2>\n\n\n\n<p>PHP\u306e\u591a\u6b21\u5143\u914d\u5217\u306f\u3001\u914d\u5217\u306e\u8981\u7d20\u3068\u3057\u3066\u5225\u306e\u914d\u5217\u3092\u6301\u3064\u69cb\u9020\u3067\u3001\u8907\u96d1\u306a\u30c7\u30fc\u30bf\u968e\u5c64\u3092\u8868\u73fe\u3059\u308b\u306e\u306b\u975e\u5e38\u306b\u4fbf\u5229\u3067\u3059\u3002\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3067\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u7d50\u679c\u30bb\u30c3\u30c8\u3084\u968e\u5c64\u7684\u306a\u30e1\u30cb\u30e5\u30fc\u69cb\u9020\u3001\u30c4\u30ea\u30fc\u72b6\u306e\u30ab\u30c6\u30b4\u30ea\u306a\u3069\u3001\u69d8\u3005\u306a\u5834\u9762\u3067\u591a\u6b21\u5143\u914d\u5217\u304c\u6d3b\u8e8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-23\">\u30cd\u30b9\u30c8\u3057\u305f\u914d\u5217\u306b\u65b0\u3057\u3044\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u591a\u6b21\u5143\u914d\u5217\u3078\u306e\u8981\u7d20\u8ffd\u52a0\u306f\u3001\u57fa\u672c\u7684\u306b\u306f\u5358\u4e00\u914d\u5217\u3078\u306e\u8ffd\u52a0\u3068\u540c\u3058\u69cb\u6587\u3092\u4f7f\u3044\u307e\u3059\u304c\u3001\u968e\u5c64\u69cb\u9020\u3092\u6b63\u78ba\u306b\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u4e8c\u6b21\u5143\u914d\u5217\u306b\u65b0\u3057\u3044\u884c\uff08\u30b5\u30d6\u914d\u5217\uff09\u3092\u8ffd\u52a0\u3059\u308b\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=\"\">\/\/ \u4e8c\u6b21\u5143\u914d\u5217\u306e\u521d\u671f\u5316\n$matrix = [\n    [1, 2, 3],\n    [4, 5, 6]\n];\n\n\/\/ \u65b0\u3057\u3044\u884c\u3092\u8ffd\u52a0\n$matrix[] = [7, 8, 9];\n\nprint_r($matrix);\n\/* \u51fa\u529b:\nArray (\n    [0] =&gt; Array ( [0] =&gt; 1 [1] =&gt; 2 [2] =&gt; 3 )\n    [1] =&gt; Array ( [0] =&gt; 4 [1] =&gt; 5 [2] =&gt; 6 )\n    [2] =&gt; Array ( [0] =&gt; 7 [1] =&gt; 8 [2] =&gt; 9 )\n)\n*\/\n<\/pre>\n\n\n\n<p><strong>\u65e2\u5b58\u306e\u884c\uff08\u30b5\u30d6\u914d\u5217\uff09\u306b\u65b0\u3057\u3044\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\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=\"\">\/\/ \u4e8c\u6b21\u5143\u76ee\u306e\u7279\u5b9a\u306e\u884c\u306b\u8981\u7d20\u3092\u8ffd\u52a0\n$matrix[0][] = 10;\nprint_r($matrix);\n\/* \u51fa\u529b\u306e\u4e00\u90e8:\n    [0] =&gt; Array ( [0] =&gt; 1 [1] =&gt; 2 [2] =&gt; 3 [3] =&gt; 10 )\n*\/\n<\/pre>\n\n\n\n<p><strong>\u591a\u6b21\u5143\u9023\u60f3\u914d\u5217\u306e\u64cd\u4f5c\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=\"\">\/\/ \u591a\u6b21\u5143\u9023\u60f3\u914d\u5217\u306e\u521d\u671f\u5316\n$users = [\n    \"user1\" =&gt; [\n        \"name\" =&gt; \"\u7530\u4e2d\u592a\u90ce\",\n        \"email\" =&gt; \"tanaka@example.com\"\n    ],\n    \"user2\" =&gt; [\n        \"name\" =&gt; \"\u4f50\u85e4\u82b1\u5b50\",\n        \"email\" =&gt; \"sato@example.com\"\n    ]\n];\n\n\/\/ \u65b0\u3057\u3044\u30e6\u30fc\u30b6\u30fc\u3092\u8ffd\u52a0\n$users[\"user3\"] = [\n    \"name\" =&gt; \"\u9234\u6728\u4e00\u90ce\",\n    \"email\" =&gt; \"suzuki@example.com\"\n];\n\n\/\/ \u65e2\u5b58\u30e6\u30fc\u30b6\u30fc\u306b\u65b0\u3057\u3044\u5c5e\u6027\u3092\u8ffd\u52a0\n$users[\"user1\"][\"phone\"] = \"090-1234-5678\";\n$users[\"user2\"][\"role\"] = \"admin\";\n\nprint_r($users);\n<\/pre>\n\n\n\n<p><strong>\u52d5\u7684\u306a\u30ad\u30fc\u751f\u6210\u3067\u30c4\u30ea\u30fc\u69cb\u9020\u3092\u69cb\u7bc9\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30ab\u30c6\u30b4\u30ea\u3068\u30b5\u30d6\u30ab\u30c6\u30b4\u30ea\u306e\u968e\u5c64\u69cb\u9020\n$categories = [];\n\n\/\/ \u7b2c\u4e00\u968e\u5c64\uff08\u89aa\u30ab\u30c6\u30b4\u30ea\uff09\u306e\u8ffd\u52a0\n$categories[\"electronics\"] = [\n    \"name\" =&gt; \"\u5bb6\u96fb\u30fb\u30c7\u30b8\u30bf\u30eb\",\n    \"subcategories\" =&gt; []\n];\n\n\/\/ \u7b2c\u4e8c\u968e\u5c64\uff08\u30b5\u30d6\u30ab\u30c6\u30b4\u30ea\uff09\u306e\u8ffd\u52a0\n$categories[\"electronics\"][\"subcategories\"][\"computers\"] = [\n    \"name\" =&gt; \"\u30d1\u30bd\u30b3\u30f3\",\n    \"products\" =&gt; []\n];\n\n\/\/ \u7b2c\u4e09\u968e\u5c64\uff08\u88fd\u54c1\uff09\u306e\u8ffd\u52a0\n$categories[\"electronics\"][\"subcategories\"][\"computers\"][\"products\"][] = [\n    \"id\" =&gt; 101,\n    \"name\" =&gt; \"\u30ce\u30fc\u30c8\u30d1\u30bd\u30b3\u30f3A\",\n    \"price\" =&gt; 89800\n];\n\n\/\/ JSON\u3067\u8868\u793a\u3059\u308b\u3068\u968e\u5c64\u69cb\u9020\u304c\u5206\u304b\u308a\u3084\u3059\u3044\necho json_encode($categories, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-24\">\u591a\u6b21\u5143\u914d\u5217\u3092\u64cd\u4f5c\u3059\u308b\u969b\u306e\u3088\u304f\u3042\u308b\u843d\u3068\u3057\u7a74<\/h3>\n\n\n\n<p>\u591a\u6b21\u5143\u914d\u5217\u3092\u6271\u3046\u969b\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u6ce8\u610f\u70b9\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<p><strong>1. \u5b58\u5728\u3057\u306a\u3044\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3078\u306e\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=\"\">\/\/ \u5b58\u5728\u3057\u306a\u3044\u968e\u5c64\u3078\u306e\u30a2\u30af\u30bb\u30b9\n$data = [\"level1\" =&gt; [\"level2A\" =&gt; \"\u5024\"]];\n\n\/\/ \u3053\u308c\u306f\u30a8\u30e9\u30fc\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\n\/\/ $data[\"level1\"][\"level2B\"][\"level3\"] = \"\u65b0\u3057\u3044\u5024\";\n\n\/\/ \u5b89\u5168\u306a\u30a2\u30af\u30bb\u30b9\u65b9\u6cd5\nif (!isset($data[\"level1\"][\"level2B\"])) {\n    $data[\"level1\"][\"level2B\"] = [];\n}\n$data[\"level1\"][\"level2B\"][\"level3\"] = \"\u65b0\u3057\u3044\u5024\";\n\n\/\/ \u3088\u308a\u7c21\u6f54\u306a\u65b9\u6cd5\uff08PHP 7\u4ee5\u964d\uff09\n$data[\"level1\"][\"level2C\"] = $data[\"level1\"][\"level2C\"] ?? [];\n$data[\"level1\"][\"level2C\"][\"level3\"] = \"\u5225\u306e\u5024\";\n<\/pre>\n\n\n\n<p><strong>2. \u53c2\u7167\u306b\u3088\u308b\u610f\u56f3\u3057\u306a\u3044\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=\"\">\/\/ \u591a\u6b21\u5143\u914d\u5217\u306e\u53c2\u7167\u306e\u554f\u984c\n$original = [\n    \"items\" =&gt; [[\"id\" =&gt; 1, \"name\" =&gt; \"Item A\"], [\"id\" =&gt; 2, \"name\" =&gt; \"Item B\"]]\n];\n\n\/\/ \u53c2\u7167\u3068\u3057\u3066\u53d6\u5f97\uff08\u610f\u56f3\u3057\u306a\u3044\u5909\u66f4\u304c\u8d77\u304d\u308b\u53ef\u80fd\u6027\uff09\n$items = &amp;$original[\"items\"];\n$items[0][\"name\"] = \"Changed Item\";  \/\/ $original \u3082\u5909\u66f4\u3055\u308c\u308b\n\n\/\/ \u4ee3\u308f\u308a\u306b\u5024\u306e\u30b3\u30d4\u30fc\u3092\u4f7f\u7528\n$itemsCopy = $original[\"items\"];\n$itemsCopy[0][\"name\"] = \"This won't affect original\";  \/\/ $original \u306f\u5909\u66f4\u3055\u308c\u306a\u3044\n<\/pre>\n\n\n\n<p><strong>3. \u8907\u96d1\u306a\u30cd\u30b9\u30c8\u3067\u306e\u914d\u5217\u64cd\u4f5c\uff1a<\/strong><\/p>\n\n\n\n<p>\u914d\u5217\u304c\u6df1\u304f\u30cd\u30b9\u30c8\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u518d\u5e30\u7684\u306a\u95a2\u6570\u3092\u4f5c\u6210\u3059\u308b\u3068\u4fbf\u5229\u3067\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u591a\u6b21\u5143\u914d\u5217\u306e\u7279\u5b9a\u30d1\u30b9\u306b\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u95a2\u6570\nfunction arraySetNestedValue(&amp;$array, $path, $value) {\n    $current = &amp;$array;\n    foreach ($path as $key) {\n        if (!isset($current[$key])) {\n            $current[$key] = [];\n        }\n        $current = &amp;$current[$key];\n    }\n    $current = $value;\n    return $array;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$data = [];\narraySetNestedValue($data, [\"user\", \"settings\", \"theme\"], \"dark\");\narraySetNestedValue($data, [\"user\", \"profile\", \"name\"], \"\u5c71\u7530\u592a\u90ce\");\n\nprint_r($data);\n\/* \u51fa\u529b:\nArray (\n    [user] =&gt; Array (\n        [settings] =&gt; Array (\n            [theme] =&gt; dark\n        )\n        [profile] =&gt; Array (\n            [name] =&gt; \u5c71\u7530\u592a\u90ce\n        )\n    )\n)\n*\/\n<\/pre>\n\n\n\n<p>\u591a\u6b21\u5143\u914d\u5217\u306f\u975e\u5e38\u306b\u67d4\u8edf\u3067\u5f37\u529b\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u3059\u304c\u3001\u6df1\u3044\u30cd\u30b9\u30c8\u3084\u8907\u96d1\u306a\u64cd\u4f5c\u306f\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3092\u640d\u306a\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u9069\u5207\u306a\u30d8\u30eb\u30d1\u30fc\u95a2\u6570\u306e\u4f5c\u6210\u3084\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30af\u30e9\u30b9\u3092\u4f7f\u3063\u305f\u69cb\u9020\u5316\u304c\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-25\">\u5927\u898f\u6a21\u914d\u5217\u64cd\u4f5c\u6642\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/h2>\n\n\n\n<p>PHP\u958b\u767a\u3067\u306f\u3001\u6570\u5343\u3001\u6570\u4e07\u3001\u6642\u306b\u306f\u6570\u767e\u4e07\u306e\u8981\u7d20\u3092\u542b\u3080\u5927\u898f\u6a21\u306a\u914d\u5217\u3092\u6271\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u72b6\u6cc1\u3067\u306f\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3068\u51e6\u7406\u901f\u5ea6\u306e\u6700\u9069\u5316\u304c\u975e\u5e38\u306b\u91cd\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u9069\u5207\u306a\u624b\u6cd5\u3092\u4f7f\u308f\u306a\u3051\u308c\u3070\u3001\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u30e1\u30e2\u30ea\u5236\u9650\u306b\u9054\u3057\u305f\u308a\u3001\u5b9f\u884c\u6642\u9593\u304c\u5927\u5e45\u306b\u5ef6\u9577\u3057\u305f\u308a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-26\">\u30e1\u30e2\u30ea\u6d88\u8cbb\u3092\u6291\u3048\u305f\u52b9\u7387\u7684\u306a\u914d\u5217\u8ffd\u52a0\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u5927\u898f\u6a21\u306a\u914d\u5217\u3092\u64cd\u4f5c\u3059\u308b\u969b\u306f\u3001\u30e1\u30e2\u30ea\u6d88\u8cbb\u3092\u6291\u3048\u308b\u3053\u3068\u304c\u7b2c\u4e00\u306e\u8ab2\u984c\u3067\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u3092\u6700\u9069\u5316\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u914d\u5217\u306e\u521d\u671f\u30b5\u30a4\u30ba\u3092\u8a2d\u5b9a\u3059\u308b\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=\"\">\/\/ \u975e\u52b9\u7387\u306a\u65b9\u6cd5\uff08\u52d5\u7684\u306b\u914d\u5217\u30b5\u30a4\u30ba\u304c\u62e1\u5f35\u3055\u308c\u308b\uff09\n$largeArray = [];\nfor ($i = 0; $i &lt; 100000; $i++) {\n    $largeArray[] = $i;\n}\n\n\/\/ \u3088\u308a\u52b9\u7387\u7684\u306a\u65b9\u6cd5\uff08\u521d\u671f\u30b5\u30a4\u30ba\u3092\u6307\u5b9a\uff09\n$largeArray = [];\n$largeArray = array_fill(0, 100000, null); \/\/ \u521d\u671f\u5bb9\u91cf\u3092\u78ba\u4fdd\nfor ($i = 0; $i &lt; 100000; $i++) {\n    $largeArray[$i] = $i; \/\/ \u65e2\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u305f\u8981\u7d20\u306b\u5024\u3092\u8a2d\u5b9a\n}\n<\/pre>\n\n\n\n<p><strong>2. \u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u6d3b\u7528\u3059\u308b\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=\"\">\/\/ \u30e1\u30e2\u30ea\u52b9\u7387\u306e\u60aa\u3044\u65b9\u6cd5\uff08\u5168\u30c7\u30fc\u30bf\u3092\u30e1\u30e2\u30ea\u306b\u4fdd\u6301\uff09\nfunction getDataArray() {\n    $data = [];\n    for ($i = 0; $i &lt; 1000000; $i++) {\n        $data[] = \"item\" . $i;\n    }\n    return $data;\n}\n\n\/\/ \u30e1\u30e2\u30ea\u52b9\u7387\u306e\u826f\u3044\u65b9\u6cd5\uff08\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u4f7f\u7528\uff09\nfunction getDataGenerator() {\n    for ($i = 0; $i &lt; 1000000; $i++) {\n        yield \"item\" . $i; \/\/ \u4e00\u5ea6\u306b1\u8981\u7d20\u3060\u3051\u3092\u30e1\u30e2\u30ea\u306b\u4fdd\u6301\n    }\n}\n\n\/\/ \u4f7f\u7528\u4f8b\nforeach (getDataGenerator() as $item) {\n    \/\/ \u5404\u8981\u7d20\u3092\u9806\u756a\u306b\u51e6\u7406\n    \/\/ \u3053\u306e\u65b9\u6cd5\u3067\u306f\u5168\u30c7\u30fc\u30bf\u3092\u30e1\u30e2\u30ea\u306b\u4fdd\u6301\u3059\u308b\u5fc5\u8981\u304c\u306a\u3044\n}\n<\/pre>\n\n\n\n<p><strong>3. \u914d\u5217\u3092\u30c1\u30e3\u30f3\u30af\u5358\u4f4d\u3067\u51e6\u7406\u3059\u308b\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5927\u304d\u306a\u914d\u5217\u3092\u30c1\u30e3\u30f3\u30af\u306b\u5206\u5272\u3057\u3066\u51e6\u7406\n$bigArray = range(1, 100000);\n$chunks = array_chunk($bigArray, 1000); \/\/ 1000\u8981\u7d20\u305a\u3064\u306b\u5206\u5272\n\nforeach ($chunks as $chunk) {\n    \/\/ 1000\u8981\u7d20\u305a\u3064\u51e6\u7406\n    processArrayChunk($chunk);\n    \n    \/\/ \u51e6\u7406\u5f8c\u306b\u30c1\u30e3\u30f3\u30af\u306e\u30e1\u30e2\u30ea\u3092\u89e3\u653e\n    unset($chunk);\n}\n<\/pre>\n\n\n\n<p><strong>4. \u4e0d\u8981\u306a\u5909\u6570\u3092\u89e3\u653e\u3059\u308b\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5927\u898f\u6a21\u51e6\u7406\u6642\u306e\u30e1\u30e2\u30ea\u7ba1\u7406\nfunction processLargeData($data) {\n    $result = [];\n    \n    foreach ($data as $key =&gt; $value) {\n        \/\/ \u4e2d\u9593\u8a08\u7b97\u306b\u4f7f\u3046\u5927\u304d\u306a\u5909\u6570\n        $tempData = heavyProcessing($value);\n        $result[$key] = extractResult($tempData);\n        \n        \/\/ \u4e2d\u9593\u5909\u6570\u306e\u30e1\u30e2\u30ea\u3092\u89e3\u653e\n        unset($tempData);\n    }\n    \n    return $result;\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-27\">\u53c2\u7167\u6e21\u3057\u3092\u6d3b\u7528\u3057\u305f\u9ad8\u901f\u306a\u914d\u5217\u64cd\u4f5c<\/h3>\n\n\n\n<p>PHP\u3067\u306f\u3001\u5024\u6e21\u3057\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff09\u3068\u53c2\u7167\u6e21\u3057\u306e2\u3064\u306e\u65b9\u6cd5\u3067\u30c7\u30fc\u30bf\u3092\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5927\u898f\u6a21\u306a\u914d\u5217\u64cd\u4f5c\u3067\u306f\u3001\u53c2\u7167\u6e21\u3057\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u30b3\u30d4\u30fc\u306e\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u56de\u907f\u3057\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u95a2\u6570\u5185\u3067\u306e\u53c2\u7167\u6e21\u3057\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5024\u6e21\u3057 - \u914d\u5217\u306e\u30b3\u30d4\u30fc\u304c\u4f5c\u6210\u3055\u308c\u308b\nfunction addItemValue($array, $item) {\n    $array[] = $item;\n    return $array;\n}\n\n\/\/ \u53c2\u7167\u6e21\u3057 - \u5143\u306e\u914d\u5217\u304c\u76f4\u63a5\u5909\u66f4\u3055\u308c\u308b\nfunction addItemReference(&amp;$array, $item) {\n    $array[] = $item;\n    \/\/ return\u4e0d\u8981\uff08\u5143\u306e\u914d\u5217\u304c\u5909\u66f4\u3055\u308c\u308b\uff09\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$bigArray = range(1, 100000);\n\n\/\/ \u5024\u6e21\u3057 - \u9045\u3044\uff08\u914d\u5217\u5168\u4f53\u304c\u30b3\u30d4\u30fc\u3055\u308c\u308b\uff09\n$bigArray = addItemValue($bigArray, 'new item');\n\n\/\/ \u53c2\u7167\u6e21\u3057 - \u9ad8\u901f\uff08\u30b3\u30d4\u30fc\u306a\u3057\uff09\naddItemReference($bigArray, 'new item');\n<\/pre>\n\n\n\n<p><strong>2. \u914d\u5217\u64cd\u4f5c\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u6bd4\u8f03\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u5927\u898f\u6a21\u914d\u5217\u3067\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03\n$largeArray = range(1, 100000);\n\n\/\/ \u6642\u9593\u8a08\u6e2c\u958b\u59cb\n$startTime = microtime(true);\n$memory1 = memory_get_usage();\n\n\/\/ \u5024\u6e21\u3057\u306b\u3088\u308b\u30de\u30fc\u30b8\n$result1 = array_merge($largeArray, [100001, 100002, 100003]);\n\n$memory2 = memory_get_usage();\n$endTime1 = microtime(true);\n\n\/\/ \u53c2\u7167\u6e21\u3057\u306b\u3088\u308b\u8ffd\u52a0\n$result2 = $largeArray;\n$result2[] = 100001;\n$result2[] = 100002;\n$result2[] = 100003;\n\n$memory3 = memory_get_usage();\n$endTime2 = microtime(true);\n\necho \"\u5024\u6e21\u3057: \" . ($endTime1 - $startTime) . \"\u79d2, \u30e1\u30e2\u30ea\u5897\u52a0: \" . ($memory2 - $memory1) . \" \u30d0\u30a4\u30c8\\n\";\necho \"\u53c2\u7167\u64cd\u4f5c: \" . ($endTime2 - $endTime1) . \"\u79d2, \u30e1\u30e2\u30ea\u5897\u52a0: \" . ($memory3 - $memory2) . \" \u30d0\u30a4\u30c8\\n\";\n<\/pre>\n\n\n\n<p><strong>3. \u30eb\u30fc\u30d7\u5185\u3067\u306e\u53c2\u7167\u306b\u3088\u308b\u9ad8\u901f\u5316\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30c7\u30fc\u30bf\u306e\u5927\u898f\u6a21\u306a\u5909\u63db\u51e6\u7406\n$data = array_fill(0, 50000, ['value' =&gt; rand(1, 100)]);\n\n\/\/ \u65b9\u6cd51: \u5024\u306b\u3088\u308b\u65b0\u3057\u3044\u914d\u5217\u4f5c\u6210\uff08\u30e1\u30e2\u30ea\u6d88\u8cbb\u5927\uff09\n$start = microtime(true);\n$processed1 = [];\nforeach ($data as $item) {\n    $processed1[] = $item['value'] * 2;\n}\necho \"\u65b9\u6cd51: \" . (microtime(true) - $start) . \"\u79d2\\n\";\n\n\/\/ \u65b9\u6cd52: \u53c2\u7167\u306b\u3088\u308b\u76f4\u63a5\u5909\u66f4\uff08\u30e1\u30e2\u30ea\u52b9\u7387\u7684\uff09\n$start = microtime(true);\nforeach ($data as &amp;$item) {\n    $item['value'] = $item['value'] * 2;\n}\nunset($item); \/\/ \u91cd\u8981: \u53c2\u7167\u3092\u89e3\u9664\necho \"\u65b9\u6cd52: \" . (microtime(true) - $start) . \"\u79d2\\n\";\n<\/pre>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u305f\u3081\u306e\u4e00\u822c\u7684\u306a\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6e2c\u5b9a\u3057\u3066\u304b\u3089\u6700\u9069\u5316\u3059\u308b<\/strong> \u2013 \u5b9f\u969b\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u7279\u5b9a<\/li>\n\n\n\n<li><strong>\u9069\u5207\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u9078\u3076<\/strong> \u2013 \u7528\u9014\u306b\u5fdc\u3058\u3066SPL\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u691c\u8a0e<\/li>\n\n\n\n<li><strong>PHP 7\u4ee5\u964d\u306e\u65b0\u6a5f\u80fd\u3092\u6d3b\u7528\u3059\u308b<\/strong> \u2013 \u65b0\u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u5927\u5e45\u306b\u6700\u9069\u5316\u3055\u308c\u3066\u3044\u308b<\/li>\n\n\n\n<li><strong>\u5927\u898f\u6a21\u30c7\u30fc\u30bf\u306fDB\u3084\u30b9\u30c8\u30ea\u30fc\u30e0\u3067\u51e6\u7406<\/strong> \u2013 \u30e1\u30e2\u30ea\u5185\u51e6\u7406\u3092\u907f\u3051\u308b<\/li>\n\n\n\n<li><strong>\u65e9\u671f\u30ea\u30bf\u30fc\u30f3<\/strong> \u2013 \u4e0d\u8981\u306a\u8a08\u7b97\u3092\u907f\u3051\u308b<\/li>\n<\/ol>\n\n\n\n<p>\u5927\u898f\u6a21\u914d\u5217\u3092\u52b9\u7387\u7684\u306b\u64cd\u4f5c\u3059\u308b\u305f\u3081\u306e\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001PHP\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-28\">\u5b9f\u8df5\u7684\u306aPHP\u914d\u5217\u6d3b\u7528\u30b7\u30fc\u30f3\u3068\u5177\u4f53\u4f8b<\/h2>\n\n\n\n<p>\u3053\u308c\u307e\u3067\u5b66\u3093\u3060\u914d\u5217\u64cd\u4f5c\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u5b9f\u969b\u306e\u958b\u767a\u30b7\u30fc\u30f3\u3067\u6d3b\u304b\u3059\u305f\u3081\u306b\u3001\u3088\u304f\u3042\u308b\u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3068\u305d\u306e\u5b9f\u88c5\u65b9\u6cd5\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u3053\u308c\u3089\u306e\u4f8b\u3092\u53c2\u8003\u306b\u3059\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u3067\u5b89\u5168\u306a\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-29\">\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7d50\u679c\u3092\u914d\u5217\u306b\u8ffd\u52a0\u3057\u3066\u51e6\u7406\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u3067\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u306e\u7d50\u679c\u30bb\u30c3\u30c8\u3092\u914d\u5217\u306b\u5909\u63db\u3057\u3066\u51e6\u7406\u3059\u308b\u30b1\u30fc\u30b9\u304c\u975e\u5e38\u306b\u591a\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ PDO\u3092\u4f7f\u3063\u305f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7d50\u679c\u306e\u53d6\u5f97\u3068\u51e6\u7406\nfunction getUsersWithRoles($db) {\n    \/\/ \u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u306e\u53d6\u5f97\uff08\u57fa\u672c\u30c7\u30fc\u30bf\uff09\n    $stmt = $db-&gt;prepare(\"SELECT id, name, email FROM users WHERE active = 1\");\n    $stmt-&gt;execute();\n    $users = $stmt-&gt;fetchAll(PDO::FETCH_ASSOC);\n    \n    \/\/ \u5404\u30e6\u30fc\u30b6\u30fc\u306e\u30ed\u30fc\u30eb\u60c5\u5831\u3092\u53d6\u5f97\u3057\u3066\u8ffd\u52a0\n    foreach ($users as &amp;$user) {\n        $roleStmt = $db-&gt;prepare(\"SELECT role_name FROM user_roles \n                                 JOIN roles ON user_roles.role_id = roles.id \n                                 WHERE user_roles.user_id = ?\");\n        $roleStmt-&gt;execute([$user['id']]);\n        $roles = $roleStmt-&gt;fetchAll(PDO::FETCH_COLUMN);\n        \n        \/\/ \u30e6\u30fc\u30b6\u30fc\u914d\u5217\u306b\u30ed\u30fc\u30eb\u60c5\u5831\u3092\u8ffd\u52a0\n        $user['roles'] = $roles;\n    }\n    unset($user); \/\/ \u53c2\u7167\u3092\u89e3\u9664\n    \n    return $users;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$db = new PDO('mysql:host=localhost;dbname=myapp', 'username', 'password');\n$usersWithRoles = getUsersWithRoles($db);\n\n\/\/ \u30ed\u30fc\u30eb\u306b\u57fa\u3065\u3044\u305f\u51e6\u7406\n$admins = array_filter($usersWithRoles, function($user) {\n    return in_array('admin', $user['roles']);\n});\n<\/pre>\n\n\n\n<p>\u3088\u308a\u52b9\u7387\u7684\u306a\u65b9\u6cd5\u3068\u3057\u3066\u3001JOIN\u6587\u3068\u30b0\u30eb\u30fc\u30d7\u5316\u3092\u4f7f\u3063\u305f\u53d6\u5f97\u65b9\u6cd5\u3082\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u4e00\u5ea6\u306e\u30af\u30a8\u30ea\u3067\u30e6\u30fc\u30b6\u30fc\u3068\u305d\u306e\u30ed\u30fc\u30eb\u3092\u53d6\u5f97\nfunction getUsersWithRolesEfficient($db) {\n    $stmt = $db-&gt;query(\"\n        SELECT u.id, u.name, u.email, GROUP_CONCAT(r.role_name) as roles\n        FROM users u\n        LEFT JOIN user_roles ur ON u.id = ur.user_id\n        LEFT JOIN roles r ON ur.role_id = r.id\n        WHERE u.active = 1\n        GROUP BY u.id\n    \");\n    \n    $users = $stmt-&gt;fetchAll(PDO::FETCH_ASSOC);\n    \n    \/\/ roles\u6587\u5b57\u5217\u3092\u914d\u5217\u306b\u5909\u63db\n    foreach ($users as &amp;$user) {\n        $user['roles'] = $user['roles'] ? explode(',', $user['roles']) : [];\n    }\n    unset($user);\n    \n    return $users;\n}\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-30\">JSON\u30c7\u30fc\u30bf\u3092\u914d\u5217\u306b\u5909\u63db\u3057\u3066\u8981\u7d20\u3092\u8ffd\u52a0\u3059\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p>\u5916\u90e8API\u3068\u306e\u9023\u643a\u3084JSON\u30d9\u30fc\u30b9\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u6271\u3046\u5834\u5408\u3001JSON\u3068\u914d\u5217\u306e\u76f8\u4e92\u5909\u63db\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ API\u304b\u3089\u306eJSON\u30c7\u30fc\u30bf\u51e6\u7406\nfunction enrichProductData($apiUrl) {\n    \/\/ API\u304b\u3089JSON\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\n    $jsonResponse = file_get_contents($apiUrl);\n    \n    \/\/ JSON\u3092\u9023\u60f3\u914d\u5217\u306b\u5909\u63db\uff08\u7b2c2\u5f15\u6570\u3092true\u306b\u3059\u308b\uff09\n    $products = json_decode($jsonResponse, true);\n    \n    if (!$products) {\n        return []; \/\/ JSON\u30c7\u30b3\u30fc\u30c9\u30a8\u30e9\u30fc\n    }\n    \n    \/\/ \u5404\u88fd\u54c1\u30c7\u30fc\u30bf\u306b\u8ffd\u52a0\u60c5\u5831\u3092\u4ed8\u4e0e\n    foreach ($products as &amp;$product) {\n        \/\/ \u7a0e\u8fbc\u4fa1\u683c\u3092\u8a08\u7b97\u3057\u3066\u8ffd\u52a0\n        $product['price_with_tax'] = $product['price'] * 1.1;\n        \n        \/\/ \u5728\u5eab\u72b6\u6cc1\u306b\u57fa\u3065\u304f\u30e9\u30d9\u30eb\u3092\u8ffd\u52a0\n        $product['stock_status'] = ($product['stock'] &gt; 0) \n            ? '\u5728\u5eab\u3042\u308a' \n            : '\u5728\u5eab\u5207\u308c';\n            \n        \/\/ \u753b\u50cfURL\u306e\u30d5\u30eb\u30d1\u30b9\u3092\u69cb\u7bc9\n        if (isset($product['image'])) {\n            $product['image_url'] = 'https:\/\/example.com\/images\/' . $product['image'];\n        }\n    }\n    unset($product);\n    \n    return $products;\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$productsData = enrichProductData('https:\/\/api.example.com\/products');\n$inStockProducts = array_filter($productsData, fn($p) =&gt; $p['stock'] &gt; 0);\n\n\/\/ \u518d\u5ea6JSON\u306b\u5909\u63db\u3057\u3066\u51fa\u529b\necho json_encode($inStockProducts, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);\n<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-31\">\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u9001\u4fe1\u3055\u308c\u305f\u5024\u3092\u914d\u5217\u306b\u5b89\u5168\u306b\u8ffd\u52a0\u3059\u308b<\/h3>\n\n\n\n<p>\u30e6\u30fc\u30b6\u30fc\u5165\u529b\u3092\u51e6\u7406\u3059\u308b\u969b\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u5341\u5206\u6ce8\u610f\u3059\u308b\u5fc5\u8981\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=\"\">\/\/ \u30d5\u30a9\u30fc\u30e0\u30c7\u30fc\u30bf\u306e\u5b89\u5168\u306a\u51e6\u7406\nfunction handleRegistrationForm() {\n    $userData = [];\n    $errors = [];\n    \n    \/\/ \u57fa\u672c\u60c5\u5831\u306e\u691c\u8a3c\u3068\u8ffd\u52a0\n    if (isset($_POST['name']) &amp;&amp; trim($_POST['name'])) {\n        $userData['name'] = htmlspecialchars(trim($_POST['name']), ENT_QUOTES, 'UTF-8');\n    } else {\n        $errors[] = '\u540d\u524d\u306f\u5fc5\u9808\u3067\u3059';\n    }\n    \n    \/\/ \u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u691c\u8a3c\u3068\u8ffd\u52a0\n    if (isset($_POST['email']) &amp;&amp; filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)) {\n        $userData['email'] = $_POST['email'];\n    } else {\n        $errors[] = '\u6709\u52b9\u306a\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044';\n    }\n    \n    \/\/ \u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u691c\u8a3c\uff08\u5b9f\u969b\u306f\u3082\u3063\u3068\u53b3\u5bc6\u306b\uff09\n    if (isset($_POST['password']) &amp;&amp; strlen($_POST['password']) &gt;= 8) {\n        $userData['password_hash'] = password_hash($_POST['password'], PASSWORD_DEFAULT);\n    } else {\n        $errors[] = '\u30d1\u30b9\u30ef\u30fc\u30c9\u306f8\u6587\u5b57\u4ee5\u4e0a\u5fc5\u8981\u3067\u3059';\n    }\n    \n    \/\/ \u8907\u6570\u9078\u629e\u306e\u8da3\u5473\u3092\u914d\u5217\u3068\u3057\u3066\u51e6\u7406\n    if (isset($_POST['hobbies']) &amp;&amp; is_array($_POST['hobbies'])) {\n        $allowedHobbies = ['\u8aad\u66f8', '\u6620\u753b', '\u65c5\u884c', '\u30b9\u30dd\u30fc\u30c4', '\u6599\u7406', '\u97f3\u697d'];\n        $userData['hobbies'] = array_intersect($_POST['hobbies'], $allowedHobbies);\n    } else {\n        $userData['hobbies'] = [];\n    }\n    \n    return ['userData' =&gt; $userData, 'errors' =&gt; $errors];\n}\n\n\/\/ \u4f7f\u7528\u4f8b\n$result = handleRegistrationForm();\nif (empty($result['errors'])) {\n    \/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u4fdd\u5b58\n    saveUserToDatabase($result['userData']);\n    \n    \/\/ \u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u6210\u529f\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8a2d\u5b9a\n    $_SESSION['message'] = '\u767b\u9332\u304c\u5b8c\u4e86\u3057\u307e\u3057\u305f';\n} else {\n    \/\/ \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u4fdd\u5b58\n    $_SESSION['errors'] = $result['errors'];\n}\n<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u8df5\u7684\u306a\u4f8b\u3092\u901a\u3058\u3066\u3001\u914d\u5217\u64cd\u4f5c\u306e\u57fa\u672c\u30c6\u30af\u30cb\u30c3\u30af\u304c\u3069\u306e\u3088\u3046\u306b\u5b9f\u969b\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u306b\u9069\u7528\u3055\u308c\u308b\u304b\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u5b89\u5168\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u3001\u52b9\u7387\u7684\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\u3001\u305d\u3057\u3066\u5916\u90e8API\u3068\u306e\u9023\u643a\u306a\u3069\u3001\u69d8\u3005\u306a\u30b7\u30fc\u30f3\u3067\u914d\u5217\u306f\u4e2d\u5fc3\u7684\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u969b\u306e\u958b\u767a\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u57fa\u672c\u7684\u306a\u30d1\u30bf\u30fc\u30f3\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u30d1\u30ef\u30d5\u30eb\u3067\u67d4\u8edf\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u69cb\u7bc9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-32\">\u307e\u3068\u3081\uff1a\u72b6\u6cc1\u306b\u5fdc\u3058\u305f\u6700\u9069\u306a\u914d\u5217\u8ffd\u52a0\u65b9\u6cd5\u306e\u9078\u3073\u65b9<\/h2>\n\n\n\n<p>PHP\u306e\u914d\u5217\u64cd\u4f5c\u3001\u7279\u306b\u8981\u7d20\u306e\u8ffd\u52a0\u65b9\u6cd5\u306b\u306f\u69d8\u3005\u306a\u9078\u629e\u80a2\u304c\u3042\u308a\u307e\u3059\u3002\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u8981\u4ef6\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8981\u4ef6\u3001\u305d\u3057\u3066\u53ef\u8aad\u6027\u3092\u8003\u616e\u3057\u3066\u6700\u9069\u306a\u65b9\u6cd5\u3092\u9078\u3076\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u3053\u308c\u307e\u3067\u7d39\u4ecb\u3057\u305f\u624b\u6cd5\u3092\u3082\u3068\u306b\u3001\u72b6\u6cc1\u5225\u306e\u6700\u9069\u306a\u9078\u629e\u3092\u307e\u3068\u3081\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-33\">\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u5225\u304a\u3059\u3059\u3081\u306e\u914d\u5217\u8ffd\u52a0\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u8868\u306f\u3001\u72b6\u6cc1\u306b\u5fdc\u3058\u305f\u6700\u9069\u306a\u914d\u5217\u8ffd\u52a0\u65b9\u6cd5\u306e\u9078\u629e\u30ac\u30a4\u30c9\u3067\u3059\uff1a<\/p>\n\n\n<div id=\"id-e6e1a13b-c1e9-493f-9cca-6545f7208ed6\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/th><th>\u63a8\u5968\u65b9\u6cd5<\/th><th>\u7406\u7531\u30fb\u30e1\u30ea\u30c3\u30c8<\/th><\/tr><\/thead><tbody><tr><td><strong>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217\u3078\u306e\u5358\u4e00\u8981\u7d20\u8ffd\u52a0<\/strong><\/td><td><code>$array[] = $value;<\/code><\/td><td>\u30b7\u30f3\u30d7\u30eb\u3067\u53ef\u8aad\u6027\u304c\u9ad8\u304f\u3001\u5358\u4e00\u8981\u7d20\u8ffd\u52a0\u3067\u306f\u6700\u3082\u9ad8\u901f<\/td><\/tr><tr><td><strong>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u914d\u5217\u3078\u306e\u8907\u6570\u8981\u7d20\u8ffd\u52a0<\/strong><\/td><td><code>array_push($array, $val1, $val2, $val3);<\/code><\/td><td>\u8907\u6570\u8981\u7d20\u3092\u307e\u3068\u3081\u3066\u8ffd\u52a0\u3067\u304d\u3001\u30b3\u30fc\u30c9\u304c\u7c21\u6f54\u306b\u306a\u308b<\/td><\/tr><tr><td><strong>\u914d\u5217\u306e\u5148\u982d\u306b\u8981\u7d20\u3092\u8ffd\u52a0<\/strong><\/td><td><code>array_unshift($array, $value);<\/code><\/td><td>\u5148\u982d\u3078\u306e\u8ffd\u52a0\u306b\u7279\u5316\u3057\u305f\u95a2\u6570\u3067\u610f\u56f3\u304c\u660e\u78ba<\/td><\/tr><tr><td><strong>\u914d\u5217\u306e\u7279\u5b9a\u4f4d\u7f6e\u306b\u8981\u7d20\u3092\u633f\u5165<\/strong><\/td><td><code>array_splice($array, $position, 0, $value);<\/code><\/td><td>\u4efb\u610f\u306e\u4f4d\u7f6e\u306b\u633f\u5165\u53ef\u80fd\u3067\u3001\u524a\u9664\u3068\u633f\u5165\u3092\u540c\u6642\u306b\u884c\u3048\u308b\u67d4\u8edf\u6027<\/td><\/tr><tr><td><strong>\u9023\u60f3\u914d\u5217\u3078\u306e\u8981\u7d20\u8ffd\u52a0<\/strong><\/td><td><code>$array[$key] = $value;<\/code><\/td><td>\u76f4\u611f\u7684\u3067\u30b7\u30f3\u30d7\u30eb\u3001\u30ad\u30fc\u3068\u5024\u306e\u95a2\u4fc2\u304c\u660e\u78ba<\/td><\/tr><tr><td><strong>\u91cd\u8907\u3092\u907f\u3051\u3066\u8981\u7d20\u3092\u8ffd\u52a0<\/strong><\/td><td><code>if (!in_array($value, $array)) { $array[] = $value; }<\/code><\/td><td>\u91cd\u8907\u30c1\u30a7\u30c3\u30af\u5f8c\u306b\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3067\u4e00\u610f\u6027\u3092\u78ba\u4fdd<\/td><\/tr><tr><td><strong>\u8907\u6570\u914d\u5217\u306e\u7d50\u5408\uff08PHP 7.4\u4ee5\u964d\uff09<\/strong><\/td><td><code>$newArray = [...$array1, ...$array2];<\/code><\/td><td>\u30e2\u30c0\u30f3\u3067\u53ef\u8aad\u6027\u306e\u9ad8\u3044\u30b9\u30d7\u30ec\u30c3\u30c9\u6f14\u7b97\u5b50\u306b\u3088\u308b\u76f4\u611f\u7684\u306a\u7d50\u5408<\/td><\/tr><tr><td><strong>\u8907\u6570\u914d\u5217\u306e\u7d50\u5408\uff08PHP 7.3\u4ee5\u524d\uff09<\/strong><\/td><td><code>$newArray = array_merge($array1, $array2);<\/code><\/td><td>\u5e83\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u4e92\u63db\u6027\u304c\u3042\u308a\u3001\u7d50\u5408\u306e\u610f\u56f3\u304c\u660e\u78ba<\/td><\/tr><tr><td><strong>\u5927\u898f\u6a21\u914d\u5217\u306e\u69cb\u7bc9<\/strong><\/td><td>\u53c2\u7167\u6e21\u3057\u3068\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf<\/td><td>\u30e1\u30e2\u30ea\u52b9\u7387\u304c\u826f\u304f\u3001\u5927\u91cf\u30c7\u30fc\u30bf\u51e6\u7406\u306b\u9069\u3057\u3066\u3044\u308b<\/td><\/tr><tr><td><strong>\u30ad\u30fc\u3068\u5024\u306e\u914d\u5217\u304b\u3089\u9023\u60f3\u914d\u5217\u3092\u4f5c\u6210<\/strong><\/td><td><code>$assocArray = array_combine($keys, $values);<\/code><\/td><td>\u30ad\u30fc\u3068\u5024\u306e\u5bfe\u5fdc\u95a2\u4fc2\u304c\u660e\u78ba\u3067\u3001\u30de\u30c3\u30d4\u30f3\u30b0\u306b\u6700\u9069<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u7279\u306b\u5b9f\u8df5\u7684\u306a\u30b7\u30fc\u30f3\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u65b9\u6cd5\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u591a\u3044\u3067\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u53d6\u5f97\u3057\u305f\u7d50\u679c\u3092\u9023\u60f3\u914d\u5217\u306b\u5909\u63db\u3057\u3001\u3055\u3089\u306b\u8ffd\u52a0\u60c5\u5831\u3092\u52a0\u3048\u308b\u3068\u3044\u3063\u305f\u51e6\u7406\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-34\">\u3055\u3089\u306a\u308b\u914d\u5217\u30b9\u30ad\u30eb\u5411\u4e0a\u306e\u305f\u3081\u306e\u5b66\u7fd2\u30ea\u30bd\u30fc\u30b9<\/h3>\n\n\n\n<p>PHP\u306e\u914d\u5217\u64cd\u4f5c\u306b\u95a2\u3059\u308b\u30b9\u30ad\u30eb\u3092\u3055\u3089\u306b\u6df1\u3081\u308b\u305f\u3081\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u3044\u304f\u3064\u304b\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>PHP\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/strong>\uff1a\u914d\u5217\u95a2\u6570\u306e\u5b8c\u5168\u306a\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\u3068\u4f8b\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.php.net\/manual\/ja\/ref.array.php\">PHP\u914d\u5217\u95a2\u6570<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.php.net\/manual\/ja\/book.spl.php\">SPL\u95a2\u6570<\/a>\uff08\u3088\u308a\u9ad8\u5ea6\u306a\u30c7\u30fc\u30bf\u69cb\u9020\uff09<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u66f8\u7c4d\u3084\u30aa\u30f3\u30e9\u30a4\u30f3\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u300eModern PHP\u300f\uff08Josh Lockhart\u8457\uff09<\/li>\n\n\n\n<li>\u300ePHP 7\u5b9f\u8df5\u30de\u30b9\u30bf\u30fc\u300f<\/li>\n\n\n\n<li>Laracasts\u306a\u3069\u306e\u30aa\u30f3\u30e9\u30a4\u30f3\u5b66\u7fd2\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/phptherightway.com\/\">PHP: The Right Way<\/a><\/li>\n\n\n\n<li>PHP\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3068\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u306b\u95a2\u3059\u308b\u30d6\u30ed\u30b0\u8a18\u4e8b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5b9f\u8df5\u7684\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u5b66\u7fd2<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u30c7\u30fc\u30bf\u69cb\u9020\u306e\u57fa\u790e<\/li>\n\n\n\n<li>SPL\u30c7\u30fc\u30bf\u69cb\u9020\uff08SplFixedArray, SplDoublyLinkedList\u7b49\uff09\u306e\u6d3b\u7528<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u6700\u5f8c\u306b\u3001PHP\u306e\u914d\u5217\u64cd\u4f5c\u30b9\u30ad\u30eb\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306e\u91cd\u8981\u306a\u70b9\u3092\u3044\u304f\u3064\u304b\u6319\u3052\u3066\u304a\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5e38\u306b\u6e2c\u5b9a\u3092\u884c\u3046<\/strong>\uff1a\u63a8\u6e2c\u3067\u306f\u306a\u304f\u3001\u5b9f\u969b\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306b\u57fa\u3065\u3044\u3066\u6700\u9069\u5316\u3092\u884c\u3044\u307e\u3057\u3087\u3046<\/li>\n\n\n\n<li><strong>\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30d0\u30e9\u30f3\u30b9<\/strong>\uff1a\u6975\u7aef\u306a\u6700\u9069\u5316\u3088\u308a\u3082\u3001\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u5fc3\u304c\u3051\u307e\u3057\u3087\u3046<\/li>\n\n\n\n<li><strong>\u6700\u65b0\u306ePHP\u6a5f\u80fd\u3092\u5b66\u3076<\/strong>\uff1aPHP 7\u4ee5\u964d\u306f\u591a\u304f\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6539\u5584\u3068\u65b0\u6a5f\u80fd\u304c\u5c0e\u5165\u3055\u308c\u3066\u3044\u307e\u3059<\/li>\n\n\n\n<li><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5e38\u306b\u610f\u8b58\u3059\u308b<\/strong>\uff1a\u7279\u306b\u30e6\u30fc\u30b6\u30fc\u5165\u529b\u3092\u914d\u5217\u306b\u8ffd\u52a0\u3059\u308b\u969b\u306f\u3001\u9069\u5207\u306a\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u3092\u5fd8\u308c\u305a\u306b<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u305f\u69d8\u3005\u306a\u914d\u5217\u8ffd\u52a0\u65b9\u6cd5\u3092\u7406\u89e3\u3057\u3001\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u6700\u9069\u306a\u65b9\u6cd5\u3092\u9078\u629e\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308c\u3070\u3001\u3088\u308a\u52b9\u7387\u7684\u3067\u5805\u7262\u306aPHP\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002\u914d\u5217\u306f\u6700\u3082\u57fa\u672c\u7684\u304b\u3064\u5f37\u529b\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u3042\u308a\u3001\u305d\u306e\u64cd\u4f5c\u306b\u7fd2\u719f\u3059\u308b\u3053\u3068\u306f\u3001PHP\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\u3068\u3057\u3066\u306e\u30b9\u30ad\u30eb\u3092\u5927\u304d\u304f\u5411\u4e0a\u3055\u305b\u308b\u9375\u3068\u306a\u308a\u307e\u3059\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],"tags":[],"class_list":{"0":"post-3436","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-php","7":"nothumb"},"_links":{"self":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/3436","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=3436"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/3436\/revisions"}],"predecessor-version":[{"id":3437,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/3436\/revisions\/3437"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3436"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3436"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3436"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}