{"id":9221,"date":"2024-03-15T02:31:39","date_gmt":"2024-03-14T17:31:39","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%ae2%e6%ac%a1%e5%85%83%e9%85%8d%e5%88%97%e3%82%92%e3%82%bd%e3%83%bc%e3%83%88%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/"},"modified":"2025-08-04T00:32:05","modified_gmt":"2025-08-03T15:32:05","slug":"php%e3%81%ae2%e6%ac%a1%e5%85%83%e9%85%8d%e5%88%97%e3%82%92%e3%82%bd%e3%83%bc%e3%83%88%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/php%e3%81%ae2%e6%ac%a1%e5%85%83%e9%85%8d%e5%88%97%e3%82%92%e3%82%bd%e3%83%bc%e3%83%88%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/","title":{"rendered":"PHP 2\u6b21\u5143\u914d\u5217\u30bd\u30fc\u30c8\u5b8c\u5168\u30ac\u30a4\u30c9 | usort\/array_multisort"},"content":{"rendered":"<p>\u4e8c\u6b21\u5143\u914d\u5217\u3092\u30bd\u30fc\u30c8\u3059\u308b\u306b\u306f\u3001PHP\u5185\u8535\u306eusort()\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002usort()\u95a2\u6570\u306f\u3001\u30ab\u30b9\u30bf\u30e0\u30bd\u30fc\u30c8\u30eb\u30fc\u30eb\u3092\u8a2d\u5b9a\u3057\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u5f15\u6570\u3068\u3057\u3066\u53d7\u3051\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff0c\u5c55\u793a\u5982\u4f55\u6839\u636e\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u7279\u5b9a\u952e\u7684\u503c\u8fdb\u884c\u6392\u5e8f\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-comment\">\/\/ \u8981\u6392\u5e8f\u7684\u4e8c\u7ef4\u6570\u7ec4<\/span>\r\n<span class=\"hljs-variable\">$users<\/span> = <span class=\"hljs-keyword\">array<\/span>(\r\n    <span class=\"hljs-keyword\">array<\/span>(<span class=\"hljs-string\">'name'<\/span> =&gt; <span class=\"hljs-string\">'Alice'<\/span>, <span class=\"hljs-string\">'age'<\/span> =&gt; <span class=\"hljs-number\">25<\/span>),\r\n    <span class=\"hljs-keyword\">array<\/span>(<span class=\"hljs-string\">'name'<\/span> =&gt; <span class=\"hljs-string\">'Bob'<\/span>, <span class=\"hljs-string\">'age'<\/span> =&gt; <span class=\"hljs-number\">30<\/span>),\r\n    <span class=\"hljs-keyword\">array<\/span>(<span class=\"hljs-string\">'name'<\/span> =&gt; <span class=\"hljs-string\">'Charlie'<\/span>, <span class=\"hljs-string\">'age'<\/span> =&gt; <span class=\"hljs-number\">20<\/span>),\r\n);\r\n\r\n<span class=\"hljs-comment\">\/\/ \u81ea\u5b9a\u4e49\u6392\u5e8f\u89c4\u5219\uff0c\u6309\u7167\u5e74\u9f84\u5347\u5e8f\u6392\u5217<\/span>\r\n<span class=\"hljs-title function_ invoke__\">usort<\/span>(<span class=\"hljs-variable\">$users<\/span>, function (<span class=\"hljs-variable\">$a<\/span>, <span class=\"hljs-variable\">$b<\/span>) {\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-variable\">$a<\/span>[<span class=\"hljs-string\">'age'<\/span>] - <span class=\"hljs-variable\">$b<\/span>[<span class=\"hljs-string\">'age'<\/span>];\r\n});\r\n\r\n<span class=\"hljs-comment\">\/\/ \u6253\u5370\u6392\u5e8f\u540e\u7684\u7ed3\u679c<\/span>\r\n<span class=\"hljs-title function_ invoke__\">print_r<\/span>(<span class=\"hljs-variable\">$users<\/span>);\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u306e\u4f8b\u3067\u306f\u3001$users\u914d\u5217\u3092usort()\u3092\u4f7f\u7528\u3057\u3066age\u30ad\u30fc\u306e\u5024\u3067\u6607\u9806\u306b\u4e26\u3079\u66ff\u3048\u307e\u3057\u305f\u3002\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u3067\u3001\u7570\u306a\u308b\u4e26\u3079\u66ff\u3048\u30eb\u30fc\u30eb\u3092\u5b9f\u73fe\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e8c\u6b21\u5143\u914d\u5217\u3092\u30bd\u30fc\u30c8\u3059\u308b\u306b\u306f\u3001PHP\u5185\u8535\u306eusort()\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002usort()\u95a2\u6570\u306f\u3001\u30ab\u30b9\u30bf\u30e0\u30bd\u30fc\u30c8\u30eb\u30fc\u30eb\u3092\u8a2d\u5b9a\u3057\u3001\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570\u3092\u5f15\u6570\u3068\u3057\u3066\u53d7\u3051\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff0c\u5c55\u793a\u5982\u4f55\u6839 [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1867,3871,161,3870,367],"class_list":["post-9221","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-1867","tag-array_multisort","tag-php","tag-usort","tag-367"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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