{"id":30159,"date":"2022-11-15T21:29:17","date_gmt":"2023-04-08T03:04:36","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%85%b3%e4%ba%8ephp%e7%b1%bb%e7%9a%84%e5%86%85%e5%ae%b9\/"},"modified":"2025-08-12T17:51:49","modified_gmt":"2025-08-12T09:51:49","slug":"%e5%85%b3%e4%ba%8ephp%e7%b1%bb%e7%9a%84%e5%86%85%e5%ae%b9","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%85%b3%e4%ba%8ephp%e7%b1%bb%e7%9a%84%e5%86%85%e5%ae%b9\/","title":{"rendered":"\u5173\u4e8ePHP\u7c7b\u7684\u5185\u5bb9"},"content":{"rendered":"

\u9996\u5148<\/h2>\n

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\u5173\u4e8e\u5bf9\u8c61<\/h2>\n

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\n\u5982\u679c\u5c06$obj\u8d4b\u503c\u7ed9\u5176\u4ed6\u53d8\u91cf\uff0c\u5219\u5bf9\u8c61\u7684ID\u5c06\u88ab\u590d\u5236\u3002
\n\u7531\u4e8e$obj\u88ab\u8d4b\u503c\u4e3a\u5bf9\u8c61\u7684ID\uff0c\u56e0\u6b64\u5373\u4f7f\u518d\u6b21\u8d4b\u503c\u4e3anull\uff0c\u5bf9\u8c61\u4e5f\u4e0d\u4f1a\u6d88\u5931\u3002\uff08\u4e0e\u5176\u4ed6\u8bed\u8a00\u7684\u5f15\u7528\u76f8\u540c\uff09<\/p>\n

<?php<\/span>\r\n$obj<\/span> =<\/span> new<\/span> StdClass<\/span>();<\/span>\r\nvar_dump<\/span>(<\/span>$obj<\/span>);<\/span>\r\n$obj2<\/span> =<\/span> $obj<\/span>;<\/span>\r\n$obj<\/span> =<\/span> null<\/span>;<\/span>\r\nvar_dump<\/span>(<\/span>$obj2<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u8c03\u7528\u8d4b\u503c\u7ed9\u5c5e\u6027\u7684\u533f\u540d\u51fd\u6570\u3002<\/h2>\n
PHP\u6839\u636e\u4e0a\u4e0b\u6587\u6765\u5224\u65ad\u5bf9\u5c5e\u6027\u548c\u65b9\u6cd5\u7684\u8bbf\u95ee\u3002\u5e26\u6709\u201c()\u201d\u7684\u8c03\u7528\u4f1a\u88ab\u5224\u65ad\u4e3a\u65b9\u6cd5\u8bbf\u95ee\uff0c\u5426\u5219\u4e3a\u5c5e\u6027\u8bbf\u95ee\u3002
\n\u56e0\u6b64\uff0c\u5982\u679c\u5c06\u533f\u540d\u51fd\u6570\u8d4b\u503c\u7ed9\u5c5e\u6027\uff0c\u5c31\u65e0\u6cd5\u76f4\u63a5\u8c03\u7528\u5b83\uff08\u9700\u8981\u5148\u8d4b\u503c\u7ed9\u53d8\u91cf\uff09\u3002<\/p>\n
\u53ef\u4ee5\u901a\u8fc7($obj->closure)()\u7684\u65b9\u5f0f\u8c03\u7528\u5c06\u533f\u540d\u51fd\u6570\u5206\u914d\u7ed9\u5c5e\u6027\u7684\u4e00\u884c\u4ee3\u7801\uff0c\u5728\u8bbf\u95ee\u5c5e\u6027\u540e\u8fdb\u884c\u8c03\u7528\u3002<\/p>\n
<?php<\/span>\r\n$obj<\/span> =<\/span> new<\/span> StdClass<\/span>();<\/span>\r\n$obj<\/span>-><\/span>closure<\/span> =<\/span> function<\/span>()<\/span> {<\/span>echo<\/span> \"hello\"<\/span>;};<\/span>\r\n(<\/span>$obj<\/span>-><\/span>closure<\/span>)();<\/span>\r\n<\/code><\/pre>\n
\u9759\u6001\u5ef6\u8fdf\u9650\u5236<\/h2>\n
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\n\u4f7f\u7528\u9759\u6001\u5ef6\u8fdf\u7ed1\u5b9a\u53ef\u4ee5\u4ece\u7236\u7c7b\u8c03\u7528\u5b50\u7c7b\u7684\u65b9\u6cd5\u3002<\/p>\n
<?php<\/span>\r\nclass<\/span> Hoge<\/span> {<\/span>\r\n    public<\/span> static<\/span> function<\/span> func1<\/span>()<\/span> {<\/span>\r\n        static<\/span>::<\/span>func2<\/span>();<\/span>\r\n    }<\/span>\r\n}<\/span>\r\nclass<\/span> Huga<\/span> extends<\/span> Hoge<\/span> {<\/span>\r\n    public<\/span> static<\/span> function<\/span> func2<\/span>()<\/span> {<\/span>\r\n        echo<\/span> \"Huga::func2\"<\/span> .<\/span> PHP_EOL<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\nHuga<\/span>::<\/span>func1<\/span>();<\/span>\r\n<\/code><\/pre>\n
\u9759\u6001\u5173\u952e\u5b57\u89e3\u51b3\u7684\u662f\u6700\u8fd1\u7684\u975e\u8f6c\u53d1\u8c03\u7528\uff08\u9664\u8f6c\u53d1\u8c03\u7528\u5916\uff09\u3002
\n\u8f6c\u53d1\u8c03\u7528\u662f\u6307\u4f7f\u7528\u201cself\u201d\u3001\u201cparent\u201d\u3001\u201cstatic\u201d\u8fdb\u884c\u8c03\u7528\u3002
\n\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u5bf9\u4e8estatic::func2();\u6765\u8bf4\uff0cHuga::func1();\u662f\u6700\u8fd1\u7684\u975e\u8f6c\u53d1\u8c03\u7528\uff0c\u56e0\u6b64static\u89e3\u6790\u4e3aHuga\u3002<\/p>\n
\u53ea\u9700\u8981\u4e00\u4e2a\u9009\u9879\u6765\u7528\u4e2d\u6587\u8f6c\u8ff0\u4ee5\u4e0b\u53e5\u5b50\uff1a\u603b\u7ed3<\/h2>\n
    \n
  • \n
      \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3059\u308b\u3068\u3001\u5909\u6570\u306b\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306eID\u304c\u4ee3\u5165\u3055\u308c\u308b<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        \n
      • \n
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           <\/p>\n
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