{"id":46935,"date":"2024-12-02T14:54:42","date_gmt":"2024-12-02T06:54:42","guid":{"rendered":"https:\/\/fwq.ai\/blog\/46935\/"},"modified":"2024-12-02T14:54:42","modified_gmt":"2024-12-02T06:54:42","slug":"php-%e5%87%bd%e6%95%b0%e6%9c%89%e5%93%aa%e4%ba%9b%e5%8f%af%e6%89%a9%e5%b1%95%e6%80%a7%e5%88%86%e7%b1%bb%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/46935\/","title":{"rendered":"PHP \u51fd\u6570\u6709\u54ea\u4e9b\u53ef\u6269\u5c55\u6027\u5206\u7c7b\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>PHP \u51fd\u6570\u6709\u54ea\u4e9b\u53ef\u6269\u5c55\u6027\u5206\u7c7b\uff1f<\/h1>\n<p>\u4eca\u65e5\u4e0d\u80af\u57cb\u5934\uff0c\u660e\u65e5\u4f55\u4ee5\u62ac\u5934\uff01\u6bcf\u65e5\u4e00\u53e5\u52aa\u529b\u81ea\u5df1\u7684\u8bdd\u54c8\u54c8~\u54c8\u55bd\uff0c\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aPHP \u51fd\u6570\u6709\u54ea\u4e9b\u53ef\u6269\u5c55\u6027\u5206\u7c7b\uff1f\u300b<\/span>\uff0c\u4e3b\u8981\u5185\u5bb9\u662f\u8bb2\u89e3<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u6536\u85cf\u6216\u8005\u6709\u66f4\u597d\u7684\u5efa\u8bae\u5728\u8bc4\u8bba\u63d0\u51fa\uff0c\u6211\u90fd\u4f1a\u8ba4\u771f\u770b\u7684\uff01\u5927\u5bb6\u4e00\u8d77\u8fdb\u6b65\uff0c\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n<p>PHP \u51fd\u6570\u53ef\u6269\u5c55\u6027\u5206\u4e3a\u4e09\u7c7b\uff1a\u51fd\u6570\u6307\u9488\uff1a\u5141\u8bb8\u5c06\u51fd\u6570\u4f5c\u4e3a\u53d8\u91cf\u4f20\u9012\u3002\u56de\u8c03\uff1a\u5728\u7279\u5b9a\u4e8b\u4ef6\u6216\u6761\u4ef6\u4e0b\u6267\u884c\u7684\u7279\u6b8a\u51fd\u6570\u6307\u9488\u3002\u95ed\u5305\uff1a\u5305\u542b\u72b6\u6001\u7684\u51fd\u6570\uff0c\u53ef\u6355\u83b7\u53d8\u91cf\u5e76\u8bbf\u95ee\u7236\u7ea7\u4f5c\u7528\u57df\u3002\u901a\u8fc7\u3092\u6d3b\u7528\u6848\u4f8b\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u7075\u6d3b\u5730\u6269\u5c55\u548c\u5b9a\u5236\u51fd\u6570\uff0c\u63d0\u9ad8\u4ee3\u7801\u7075\u6d3b\u6027\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241025\/1729855478671b7ff62c27f.jpg\" class=\"aligncenter\" title=\"PHP \u51fd\u6570\u6709\u54ea\u4e9b\u53ef\u6269\u5c55\u6027\u5206\u7c7b\uff1f\u63d2\u56fe\" alt=\"PHP \u51fd\u6570\u6709\u54ea\u4e9b\u53ef\u6269\u5c55\u6027\u5206\u7c7b\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>PHP \u51fd\u6570\u53ef\u6269\u5c55\u6027\u5206\u7c7b\u53ca\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p><strong>\u524d\u8a00<\/strong><br \/>PHP \u51fd\u6570\u662f\u8bed\u8a00\u4e2d\u81f3\u5173\u91cd\u8981\u7684\u7ec4\u6210\u90e8\u5206\uff0c\u8d1f\u8d23\u6267\u884c\u7279\u5b9a\u7684\u4efb\u52a1\u3002\u5bf9\u4e8e\u6269\u5c55\u73b0\u6709\u51fd\u6570\u529f\u80fd\u6216\u521b\u5efa\u81ea\u5b9a\u4e49\u51fd\u6570\u7684\u9700\u6c42\u662f\u666e\u904d\u5b58\u5728\u7684\u3002\u901a\u8fc7\u4e86\u89e3 PHP \u4e2d\u51fd\u6570\u53ef\u6269\u5c55\u6027\u7684\u5206\u7c7b\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u66f4\u597d\u5730\u9a7e\u9a6d\u51fd\u6570\u5e76\u63d0\u9ad8\u4ee3\u7801\u7075\u6d3b\u6027\u3002<\/p>\n<p><strong>\u5206\u7c7b<\/strong><\/p>\n<p>PHP \u51fd\u6570\u7684\u53ef\u6269\u5c55\u6027\u4e3b\u8981\u5206\u4e3a\u4ee5\u4e0b\u4e09\u7c7b\uff1a<\/p>\n<ul>\n<li><strong>\u51fd\u6570\u6307\u9488\uff08function pointers\uff09\uff1a<\/strong>\u5141\u8bb8\u5c06\u51fd\u6570\u4f5c\u4e3a\u53d8\u91cf\u4f20\u9012\uff0c\u4f7f\u5176\u53ef\u4ee5\u52a8\u6001\u5730\u88ab\u8c03\u7528\u6216\u7ed1\u5b9a\u5230\u5176\u4ed6\u51fd\u6570\u3002<\/li>\n<li><strong>\u56de\u8c03\uff08callbacks\uff09\uff1a<\/strong>\u7279\u6b8a\u7684\u51fd\u6570\u6307\u9488\uff0c\u6307\u5b9a\u4e00\u4e2a\u5728\u7279\u5b9a\u4e8b\u4ef6\u6216\u6761\u4ef6\u4e0b\u6267\u884c\u7684\u51fd\u6570\u3002<\/li>\n<li><strong>\u95ed\u5305\uff08closures\uff09\uff1a<\/strong>\u5141\u8bb8\u521b\u5efa\u5e26\u72b6\u6001\u7684\u51fd\u6570\uff0c\u5176\u53ef\u4ee5\u6355\u83b7\u53d8\u91cf\u5e76\u8bbf\u95ee\u5176\u7236\u7ea7\u4f5c\u7528\u57df\u3002<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p><strong>\u51fd\u6570\u6307\u9488<\/strong><\/p>\n<pre>$double = function($num) { return $num * 2; };\n$nums = [1, 2, 3];\n$doubled = array_map($double, $nums); \/\/ [2, 4, 6]<\/pre>\n<p><strong>\u56de\u8c03<\/strong><\/p>\n<pre>usort($people, function($a, $b) {\n    return $a['age'] - $b['age'];\n}); \/\/ \u6392\u5e8f $people \u6570\u7ec4\u4e2d\u7684\u5bf9\u8c61\uff0c\u6309 `age` \u5c5e\u6027\u5347\u5e8f<\/pre>\n<p><strong>\u95ed\u5305<\/strong><\/p>\n<pre>$num = 5;\n$increment = function() use ($num) { return ++$num; };\necho $increment(); \/\/ 6<\/pre>\n<p><strong>\u7ed3\u8bba<\/strong><br \/>\u901a\u8fc7\u4e86\u89e3 PHP \u51fd\u6570\u53ef\u6269\u5c55\u6027\u7684\u5206\u7c7b\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u66f4\u7075\u6d3b\u5730\u6269\u5c55\u548c\u5b9a\u5236\u51fd\u6570\u3002\u51fd\u6570\u6307\u9488\u3001\u56de\u8c03\u548c\u95ed\u5305\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u4f7f\u5f00\u53d1\u8005\u80fd\u591f\u52a8\u6001\u8c03\u7528\u51fd\u6570\u3001\u6267\u884c\u7279\u5b9a\u7684\u4efb\u52a1\uff0c\u5e76\u521b\u5efa\u5305\u542b\u72b6\u6001\u7684\u81ea\u5b9a\u4e49\u51fd\u6570\u3002\u5229\u7528\u8fd9\u4e9b\u529f\u80fd\uff0c\u590d\u6742\u7684\u4ee3\u7801\u4efb\u52a1\u53ef\u4ee5\u53d8\u5f97\u66f4\u5bb9\u6613\u7ba1\u7406\u548c\u7ef4\u62a4\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\u7c73\u4e91\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP \u51fd\u6570\u6709\u54ea\u4e9b\u53ef\u6269\u5c55\u6027\u5206\u7c7b\uff1f \u4eca\u65e5\u4e0d\u80af\u57cb\u5934\uff0c\u660e\u65e5\u4f55\u4ee5\u62ac\u5934\uff01\u6bcf\u65e5\u4e00\u53e5\u52aa\u529b\u81ea\u5df1\u7684\u8bdd\u54c8\u54c8~\u54c8\u55bd\uff0c\u4eca\u5929\u6211\u5c06\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u300aPHP \u51fd\u6570\u6709\u54ea\u4e9b\u53ef\u6269\u5c55\u6027\u5206\u7c7b\uff1f\u300b\uff0c\u4e3b\u8981\u5185\u5bb9\u662f\u8bb2\u89e3\u7b49\u7b49\uff0c\u611f\u5174\u8da3\u7684\u670b\u53cb\u53ef\u4ee5\u6536\u85cf\u6216\u8005\u6709\u66f4\u597d\u7684\u5efa\u8bae\u5728\u8bc4\u8bba\u63d0\u51fa\uff0c\u6211\u90fd\u4f1a\u8ba4\u771f\u770b\u7684\uff01\u5927\u5bb6\u4e00\u8d77\u8fdb\u6b65\uff0c\u4e00\u8d77\u5b66\u4e60\uff01 PHP \u51fd\u6570\u53ef\u6269\u5c55\u6027\u5206\u4e3a\u4e09\u7c7b\uff1a\u51fd\u6570\u6307\u9488\uff1a\u5141\u8bb8\u5c06\u51fd\u6570\u4f5c\u4e3a\u53d8\u91cf\u4f20\u9012\u3002\u56de\u8c03\uff1a\u5728\u7279\u5b9a\u4e8b\u4ef6\u6216\u6761\u4ef6\u4e0b\u6267\u884c\u7684\u7279\u6b8a\u51fd\u6570\u6307\u9488\u3002\u95ed\u5305\uff1a\u5305\u542b\u72b6\u6001\u7684\u51fd\u6570\uff0c\u53ef\u6355\u83b7\u53d8\u91cf\u5e76\u8bbf\u95ee\u7236\u7ea7\u4f5c\u7528\u57df\u3002\u901a\u8fc7\u3092\u6d3b\u7528\u6848\u4f8b\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u7075\u6d3b\u5730\u6269\u5c55\u548c\u5b9a\u5236\u51fd\u6570\uff0c\u63d0\u9ad8\u4ee3\u7801\u7075\u6d3b\u6027\u3002 PHP \u51fd\u6570\u53ef\u6269\u5c55\u6027\u5206\u7c7b\u53ca\u5b9e\u6218\u6848\u4f8b \u524d\u8a00PHP \u51fd\u6570\u662f\u8bed\u8a00\u4e2d\u81f3\u5173\u91cd\u8981\u7684\u7ec4\u6210\u90e8\u5206\uff0c\u8d1f\u8d23\u6267\u884c\u7279\u5b9a\u7684\u4efb\u52a1\u3002\u5bf9\u4e8e\u6269\u5c55\u73b0\u6709\u51fd\u6570\u529f\u80fd\u6216\u521b\u5efa\u81ea\u5b9a\u4e49\u51fd\u6570\u7684\u9700\u6c42\u662f\u666e\u904d\u5b58\u5728\u7684\u3002\u901a\u8fc7\u4e86\u89e3 PHP \u4e2d\u51fd\u6570\u53ef\u6269\u5c55\u6027\u7684\u5206\u7c7b\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u66f4\u597d\u5730\u9a7e\u9a6d\u51fd\u6570\u5e76\u63d0\u9ad8\u4ee3\u7801\u7075\u6d3b\u6027\u3002 \u5206\u7c7b PHP \u51fd\u6570\u7684\u53ef\u6269\u5c55\u6027\u4e3b\u8981\u5206\u4e3a\u4ee5\u4e0b\u4e09\u7c7b\uff1a \u51fd\u6570\u6307\u9488\uff08function pointers\uff09\uff1a\u5141\u8bb8\u5c06\u51fd\u6570\u4f5c\u4e3a\u53d8\u91cf\u4f20\u9012\uff0c\u4f7f\u5176\u53ef\u4ee5\u52a8\u6001\u5730\u88ab\u8c03\u7528\u6216\u7ed1\u5b9a\u5230\u5176\u4ed6\u51fd\u6570\u3002 \u56de\u8c03\uff08callbacks\uff09\uff1a\u7279\u6b8a\u7684\u51fd\u6570\u6307\u9488\uff0c\u6307\u5b9a\u4e00\u4e2a\u5728\u7279\u5b9a\u4e8b\u4ef6\u6216\u6761\u4ef6\u4e0b\u6267\u884c\u7684\u51fd\u6570\u3002 \u95ed\u5305\uff08closures\uff09\uff1a\u5141\u8bb8\u521b\u5efa\u5e26\u72b6\u6001\u7684\u51fd\u6570\uff0c\u5176\u53ef\u4ee5\u6355\u83b7\u53d8\u91cf\u5e76\u8bbf\u95ee\u5176\u7236\u7ea7\u4f5c\u7528\u57df\u3002 \u5b9e\u6218\u6848\u4f8b \u51fd\u6570\u6307\u9488 $double = function($num) { return $num * 2; }; $nums = [1, 2, 3]; $doubled = array_map($double, $nums); \/\/ [2, 4, 6] \u56de\u8c03 usort($people, function($a, $b) { return $a[&#8216;age&#8217;] &#8211; $b[&#8216;age&#8217;]; }); \/\/ \u6392\u5e8f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-46935","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/46935","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=46935"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/46935\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=46935"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=46935"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=46935"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}