{"id":47325,"date":"2024-12-02T11:40:23","date_gmt":"2024-12-02T03:40:23","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47325\/"},"modified":"2024-12-02T11:40:23","modified_gmt":"2024-12-02T03:40:23","slug":"php-%e5%87%bd%e6%95%b0%e7%9a%84%e5%87%bd%e6%95%b0%e6%8c%87%e9%92%88%e5%a6%82%e4%bd%95%e4%b8%8e%e7%b1%bb%e6%96%b9%e6%b3%95%e9%85%8d%e5%90%88%e4%bd%bf%e7%94%a8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47325\/","title":{"rendered":"PHP \u51fd\u6570\u7684\u51fd\u6570\u6307\u9488\u5982\u4f55\u4e0e\u7c7b\u65b9\u6cd5\u914d\u5408\u4f7f\u7528\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>PHP \u51fd\u6570\u7684\u51fd\u6570\u6307\u9488\u5982\u4f55\u4e0e\u7c7b\u65b9\u6cd5\u914d\u5408\u4f7f\u7528\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\u7684\u51fd\u6570\u6307\u9488\u5982\u4f55\u4e0e\u7c7b\u65b9\u6cd5\u914d\u5408\u4f7f\u7528\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\u6307\u9488\u53ef\u4ee5\u4e0e\u7c7b\u65b9\u6cd5\u76f8\u7ed3\u5408\uff0c\u521b\u5efa\u7075\u6d3b\u3001\u53ef\u6269\u5c55\u7684\u4ee3\u7801\u3002\u901a\u8fc7\u4f7f\u7528 fn \u5173\u952e\u5b57\u521b\u5efa\u51fd\u6570\u6307\u9488\uff0c\u5e76\u5c06\u5176\u4e0e [\u7c7b\u540d\uff0c\u65b9\u6cd5\u540d] \u683c\u5f0f\u5173\u8054\u5230\u7c7b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u52a8\u6001\u8c03\u7528\u65b9\u6cd5\uff0c\u5b9e\u73b0\u4ee3\u7801\u7075\u6d3b\u6027\u3001\u53ef\u6269\u5c55\u6027\u548c\u590d\u7528\u3002\u4f46\u9700\u8981\u6ce8\u610f\u65b9\u6cd5\u7b7e\u540d\u548c\u9759\u6001\u65b9\u6cd5\u7684\u9650\u5236\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729911028671c58f4480e7.jpg\" class=\"aligncenter\" title=\"PHP \u51fd\u6570\u7684\u51fd\u6570\u6307\u9488\u5982\u4f55\u4e0e\u7c7b\u65b9\u6cd5\u914d\u5408\u4f7f\u7528\uff1f\u63d2\u56fe\" alt=\"PHP \u51fd\u6570\u7684\u51fd\u6570\u6307\u9488\u5982\u4f55\u4e0e\u7c7b\u65b9\u6cd5\u914d\u5408\u4f7f\u7528\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>PHP \u51fd\u6570\u6307\u9488\u4e0e\u7c7b\u65b9\u6cd5\u7684\u914d\u5408<\/strong><\/p>\n<p>PHP \u51fd\u6570\u6307\u9488\u662f\u4e00\u79cd\u6307\u5411\u51fd\u6570\u7684\u7279\u6b8a\u7c7b\u578b\u3002\u5b83\u53ef\u4ee5\u4e0e\u7c7b\u65b9\u6cd5\u7ed3\u5408\u4f7f\u7528\uff0c\u4ee5\u521b\u5efa\u66f4\u7075\u6d3b\u3001\u53ef\u6269\u5c55\u7684\u4ee3\u7801\u3002<\/p>\n<p><strong>\u8bed\u6cd5<\/strong><\/p>\n<p>\u8981\u521b\u5efa\u4e00\u4e2a\u51fd\u6570\u6307\u9488\uff0c\u8bf7\u4f7f\u7528 <code>fn<\/code> \u5173\u952e\u5b57\uff1a<\/p>\n<pre>$functionPointer = fn(...$args) =&gt; ...<\/pre>\n<p>\u8981\u5c06\u5176\u4e0e\u7c7b\u65b9\u6cd5\u5173\u8054\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n<pre>$functionPointer = [$className, $methodName];<\/pre>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b\u793a\u4f8b\uff1a<\/p>\n<pre>class Math {\n    public static function add(int $a, int $b): int {\n        return $a + $b;\n    }\n}\n\n$addFunction = [Math::class, 'add'];  \/\/ \u521b\u5efa\u51fd\u6570\u6307\u9488\n\n$result = $addFunction(5, 10);  \/\/ \u8c03\u7528\u51fd\u6570\u6307\u9488<\/pre>\n<p>\u8fd9\u6bb5\u4ee3\u7801\u4f7f\u7528 <code>fn<\/code> \u5173\u952e\u5b57\u521b\u5efa\u6307\u5411 <code>Math<\/code> \u7c7b\u4e2d\u7684 <code>add<\/code> \u65b9\u6cd5\u7684\u51fd\u6570\u6307\u9488\u3002\u7136\u540e\uff0c\u5b83\u4f7f\u7528\u51fd\u6570\u6307\u9488\u6765\u8c03\u7528 <code>add<\/code> \u65b9\u6cd5\u5e76\u8ba1\u7b97\u548c\u3002<\/p>\n<p><strong>\u4f18\u52bf<\/strong><\/p>\n<p>\u4f7f\u7528\u51fd\u6570\u6307\u9488\u4e0e\u7c7b\u65b9\u6cd5\u76f8\u7ed3\u5408\u5177\u6709\u4ee5\u4e0b\u4f18\u52bf\uff1a<\/p>\n<ul>\n<li><strong>\u4ee3\u7801\u7075\u6d3b\u6027\uff1a<\/strong>\u53ef\u4ee5\u52a8\u6001\u5730\u8c03\u7528\u65b9\u6cd5\uff0c\u800c\u65e0\u9700\u660e\u786e\u6307\u5b9a\u7c7b\u540d\u548c\u65b9\u6cd5\u540d\u3002<\/li>\n<li><strong>\u53ef\u6269\u5c55\u6027\uff1a<\/strong>\u53ef\u4ee5\u8f7b\u677e\u5730\u66f4\u65b0\u57fa\u7840\u7c7b\u6216\u65b9\u6cd5\uff0c\u800c\u4e0d\u5f71\u54cd\u4f7f\u7528\u51fd\u6570\u6307\u9488\u7684\u4ee3\u7801\u3002<\/li>\n<li><strong>\u4ee3\u7801\u590d\u7528\uff1a<\/strong>\u53ef\u4ee5\u8de8\u4e0d\u540c\u7c7b\u6216\u6a21\u5757\u590d\u7528\u51fd\u6570\u6307\u9488\u3002<\/li>\n<\/ul>\n<p><strong>\u5c40\u9650\u6027<\/strong><\/p>\n<p>\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u9650\u5236\uff1a<\/p>\n<ul>\n<li><strong>\u65b9\u6cd5\u7b7e\u540d\uff1a<\/strong>\u51fd\u6570\u6307\u9488\u5fc5\u987b\u4e0e\u6240\u5f15\u7528\u7684\u7c7b\u65b9\u6cd5\u5177\u6709\u76f8\u540c\u7684\u53c2\u6570\u548c\u8fd4\u56de\u503c\u7c7b\u578b\u3002<\/li>\n<li><strong>\u9759\u6001\u65b9\u6cd5\uff1a<\/strong>\u51fd\u6570\u6307\u9488\u53ea\u80fd\u6307\u5411\u9759\u6001\u7c7b\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<p>\u4eca\u5929\u5173\u4e8e\u300aPHP \u51fd\u6570\u7684\u51fd\u6570\u6307\u9488\u5982\u4f55\u4e0e\u7c7b\u65b9\u6cd5\u914d\u5408\u4f7f\u7528\uff1f\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u7c73\u4e91\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP \u51fd\u6570\u7684\u51fd\u6570\u6307\u9488\u5982\u4f55\u4e0e\u7c7b\u65b9\u6cd5\u914d\u5408\u4f7f\u7528\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\u7684\u51fd\u6570\u6307\u9488\u5982\u4f55\u4e0e\u7c7b\u65b9\u6cd5\u914d\u5408\u4f7f\u7528\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\u6307\u9488\u53ef\u4ee5\u4e0e\u7c7b\u65b9\u6cd5\u76f8\u7ed3\u5408\uff0c\u521b\u5efa\u7075\u6d3b\u3001\u53ef\u6269\u5c55\u7684\u4ee3\u7801\u3002\u901a\u8fc7\u4f7f\u7528 fn \u5173\u952e\u5b57\u521b\u5efa\u51fd\u6570\u6307\u9488\uff0c\u5e76\u5c06\u5176\u4e0e [\u7c7b\u540d\uff0c\u65b9\u6cd5\u540d] \u683c\u5f0f\u5173\u8054\u5230\u7c7b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u52a8\u6001\u8c03\u7528\u65b9\u6cd5\uff0c\u5b9e\u73b0\u4ee3\u7801\u7075\u6d3b\u6027\u3001\u53ef\u6269\u5c55\u6027\u548c\u590d\u7528\u3002\u4f46\u9700\u8981\u6ce8\u610f\u65b9\u6cd5\u7b7e\u540d\u548c\u9759\u6001\u65b9\u6cd5\u7684\u9650\u5236\u3002 PHP \u51fd\u6570\u6307\u9488\u4e0e\u7c7b\u65b9\u6cd5\u7684\u914d\u5408 PHP \u51fd\u6570\u6307\u9488\u662f\u4e00\u79cd\u6307\u5411\u51fd\u6570\u7684\u7279\u6b8a\u7c7b\u578b\u3002\u5b83\u53ef\u4ee5\u4e0e\u7c7b\u65b9\u6cd5\u7ed3\u5408\u4f7f\u7528\uff0c\u4ee5\u521b\u5efa\u66f4\u7075\u6d3b\u3001\u53ef\u6269\u5c55\u7684\u4ee3\u7801\u3002 \u8bed\u6cd5 \u8981\u521b\u5efa\u4e00\u4e2a\u51fd\u6570\u6307\u9488\uff0c\u8bf7\u4f7f\u7528 fn \u5173\u952e\u5b57\uff1a $functionPointer = fn(&#8230;$args) =&gt; &#8230; \u8981\u5c06\u5176\u4e0e\u7c7b\u65b9\u6cd5\u5173\u8054\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a $functionPointer = [$className, $methodName]; \u5b9e\u6218\u6848\u4f8b \u8003\u8651\u4ee5\u4e0b\u793a\u4f8b\uff1a class Math { public static function add(int $a, int $b): int { return $a + $b; } } $addFunction = [Math::class, &#8216;add&#8217;]; \/\/ \u521b\u5efa\u51fd\u6570\u6307\u9488 $result [&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-47325","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47325","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=47325"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47325\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47325"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47325"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}