{"id":35,"date":"2024-08-14T15:14:20","date_gmt":"2024-08-14T07:14:20","guid":{"rendered":"https:\/\/www.linhw.cn\/?p=35"},"modified":"2024-08-14T15:14:20","modified_gmt":"2024-08-14T07:14:20","slug":"php%e4%b8%ad%e7%9a%84%e9%ad%94%e6%9c%af%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.linhw.cn\/index.php\/2024\/08\/14\/php%e4%b8%ad%e7%9a%84%e9%ad%94%e6%9c%af%e6%96%b9%e6%b3%95\/","title":{"rendered":"PHP\u4e2d\u7684\u9b54\u672f\u65b9\u6cd5"},"content":{"rendered":"\n<p><\/p>\n\n\n\n<p>\u9b54\u672f\u65b9\u6cd5\u662fPHP\u4e2d\u4ee5\u53cc\u4e0b\u5212\u7ebf __ \u5f00\u5934\uff0c\u5e76\u5177\u6709\u7279\u6b8a\u7528\u9014\u7684\u65b9\u6cd5\u3002\u5b83\u4eec\u4f1a\u5728\u7279\u5b9a\u60c5\u51b5\u4e0b\u88ab\u81ea\u52a8\u8c03\u7528\uff0c\u8d4b\u4e88\u5f00\u53d1\u8005\u5728\u4e0d\u4fee\u6539\u7c7b\u5916\u90e8\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\uff0c\u6539\u53d8\u5bf9\u8c61\u884c\u4e3a\u7684\u80fd\u529b\u3002<\/p>\n\n\n\n<p><strong>\u5e38\u7528\u7684PHP\u9b54\u672f\u65b9\u6cd5\uff1a<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\u65b9\u6cd5\u540d<\/td><td>\u8c03\u7528\u65f6\u673a<\/td><td>\u7528\u9014<\/td><\/tr><tr><td>__construct()<\/td><td>\u5728\u521b\u5efa\u65b0\u5bf9\u8c61\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u521d\u59cb\u5316\u5bf9\u8c61\u7684\u5c5e\u6027\uff0c\u4f8b\u5982\u8bbe\u7f6e\u9ed8\u8ba4\u503c\u7b49<\/td><\/tr><tr><td>__destruct()<\/td><td>\u5728\u5bf9\u8c61\u88ab\u9500\u6bc1\u524d\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u6267\u884c\u6e05\u7406\u5de5\u4f5c\uff0c\u4f8b\u5982\u5173\u95ed\u8fde\u63a5\u3001\u91ca\u653e\u8d44\u6e90\u7b49<\/td><\/tr><tr><td>__get($name)<\/td><td>\u5728\u8bbf\u95ee\u5bf9\u8c61\u4e0d\u53ef\u8bbf\u95ee\u7684\u5c5e\u6027\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u5b9e\u73b0\u5c5e\u6027\u7684\u91cd\u8f7d\uff0c\u4f8b\u5982\u52a8\u6001\u751f\u6210\u5c5e\u6027\u503c\u3001\u5b9e\u73b0\u5c5e\u6027\u7684\u5ef6\u8fdf\u52a0\u8f7d\u7b49<\/td><\/tr><tr><td>__set($name, $value)<\/td><td>\u5728\u7ed9\u5bf9\u8c61\u4e0d\u53ef\u8bbf\u95ee\u7684\u5c5e\u6027\u8d4b\u503c\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u5b9e\u73b0\u5c5e\u6027\u7684\u91cd\u8f7d\uff0c\u4f8b\u5982\u5bf9\u5c5e\u6027\u503c\u8fdb\u884c\u9a8c\u8bc1\u3001\u8bb0\u5f55\u5c5e\u6027\u4fee\u6539\u65e5\u5fd7\u7b49<\/td><\/tr><tr><td>__isset($name)<\/td><td>\u4f7f\u7528 isset() \u6216 empty() \u51fd\u6570\u68c0\u67e5\u5bf9\u8c61\u4e0d\u53ef\u8bbf\u95ee\u7684\u5c5e\u6027\u662f\u5426\u5b58\u5728\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u5b9e\u73b0\u5c5e\u6027\u7684\u91cd\u8f7d\uff0c\u4f8b\u5982\u5224\u65ad\u5c5e\u6027\u662f\u5426\u8bbe\u7f6e\u3001\u662f\u5426\u4e3a\u7a7a\u7b49<\/td><\/tr><tr><td>__unset($name)<\/td><td>\u4f7f\u7528 unset() \u51fd\u6570\u5220\u9664\u5bf9\u8c61\u4e0d\u53ef\u8bbf\u95ee\u7684\u5c5e\u6027\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u5b9e\u73b0\u5c5e\u6027\u7684\u91cd\u8f7d\uff0c\u4f8b\u5982\u7981\u6b62\u5220\u9664\u67d0\u4e9b\u5c5e\u6027\u3001\u8bb0\u5f55\u5c5e\u6027\u5220\u9664\u65e5\u5fd7\u7b49<\/td><\/tr><tr><td>__call($name, $arguments)<\/td><td>\u5728\u8c03\u7528\u5bf9\u8c61\u4e0d\u53ef\u8bbf\u95ee\u7684\u65b9\u6cd5\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u5b9e\u73b0\u65b9\u6cd5\u7684\u91cd\u8f7d\uff0c\u4f8b\u5982\u5904\u7406\u672a\u5b9a\u4e49\u65b9\u6cd5\u7684\u8c03\u7528\u3001\u5b9e\u73b0\u4ee3\u7406\u6a21\u5f0f\u7b49<\/td><\/tr><tr><td>__callStatic($name, $arguments)<\/td><td>\u5728\u8c03\u7528\u7c7b\u4e0d\u53ef\u8bbf\u95ee\u7684\u9759\u6001\u65b9\u6cd5\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u5b9e\u73b0\u9759\u6001\u65b9\u6cd5\u7684\u91cd\u8f7d\uff0c\u4f8b\u5982\u5904\u7406\u672a\u5b9a\u4e49\u9759\u6001\u65b9\u6cd5\u7684\u8c03\u7528\u3001\u5b9e\u73b0\u5355\u4f8b\u6a21\u5f0f\u7b49<\/td><\/tr><tr><td>__toString()<\/td><td>\u5f53\u5c06\u5bf9\u8c61\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u81ea\u5b9a\u4e49\u5bf9\u8c61\u7684\u5b57\u7b26\u4e32\u8868\u793a\u5f62\u5f0f\uff0c\u4f8b\u5982\u6253\u5370\u5bf9\u8c61\u4fe1\u606f\u65f6<\/td><\/tr><tr><td>__invoke()<\/td><td>\u5f53\u5c06\u5bf9\u8c61\u4f5c\u4e3a\u51fd\u6570\u8c03\u7528\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u5c06\u5bf9\u8c61\u5b9e\u4f8b\u4f5c\u4e3a\u51fd\u6570\u4f7f\u7528\uff0c\u4f8b\u5982\u5b9e\u73b0\u56de\u8c03\u51fd\u6570\u3001\u95ed\u5305\u7b49<\/td><\/tr><tr><td>__clone()<\/td><td>\u4f7f\u7528 clone \u5173\u952e\u5b57\u514b\u9686\u5bf9\u8c61\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u63a7\u5236\u5bf9\u8c61\u7684\u514b\u9686\u884c\u4e3a\uff0c\u4f8b\u5982\u5b9e\u73b0\u6df1\u62f7\u8d1d\u3001\u9632\u6b62\u5bf9\u8c61\u88ab\u514b\u9686\u7b49<\/td><\/tr><tr><td>__sleep()<\/td><td>\u4f7f\u7528 serialize() \u51fd\u6570\u5e8f\u5217\u5316\u5bf9\u8c61\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u6307\u5b9a\u54ea\u4e9b\u5c5e\u6027\u9700\u8981\u88ab\u5e8f\u5217\u5316\uff0c\u4f8b\u5982\u6392\u9664\u4e0d\u9700\u8981\u5e8f\u5217\u5316\u7684\u5c5e\u6027\u3001\u4f18\u5316\u5e8f\u5217\u5316\u6027\u80fd\u7b49<\/td><\/tr><tr><td>__wakeup()<\/td><td>\u4f7f\u7528 unserialize() \u51fd\u6570\u53cd\u5e8f\u5217\u5316\u5bf9\u8c61\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u5728\u53cd\u5e8f\u5217\u5316\u540e\u521d\u59cb\u5316\u5bf9\u8c61\uff0c\u4f8b\u5982\u6062\u590d\u6570\u636e\u5e93\u8fde\u63a5\u3001\u91cd\u65b0\u5efa\u7acb\u5bf9\u8c61\u4f9d\u8d56\u5173\u7cfb\u7b49<\/td><\/tr><tr><td>__autoload($class)<\/td><td>\u5f53\u8bd5\u56fe\u5b9e\u4f8b\u5316\u4e00\u4e2a\u5c1a\u672a\u5b9a\u4e49\u7684\u7c7b\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u81ea\u52a8\u52a0\u8f7d\u7c7b\u6587\u4ef6\uff0c\u4f8b\u5982\u6839\u636e\u7c7b\u540d\u81ea\u52a8\u52a0\u8f7d\u5bf9\u5e94\u8def\u5f84\u7684\u7c7b\u6587\u4ef6<\/td><\/tr><tr><td>__set_state($properties)<\/td><td>\u4f7f\u7528 var_export() \u51fd\u6570\u5bfc\u51fa\u5bf9\u8c61\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u81ea\u5b9a\u4e49\u5bf9\u8c61\u7684\u5bfc\u51fa\u683c\u5f0f\uff0c\u4f8b\u5982\u53ea\u5bfc\u51fa\u7279\u5b9a\u5c5e\u6027\u3001\u5bf9\u5c5e\u6027\u503c\u8fdb\u884c\u52a0\u5bc6\u7b49<\/td><\/tr><tr><td>__debugInfo()<\/td><td>\u4f7f\u7528 var_dump() \u51fd\u6570\u6253\u5370\u5bf9\u8c61\u8c03\u8bd5\u4fe1\u606f\u65f6\u81ea\u52a8\u8c03\u7528<\/td><td>\u7528\u4e8e\u81ea\u5b9a\u4e49\u5bf9\u8c61\u5728\u8c03\u8bd5\u65f6\u7684\u8f93\u51fa\u4fe1\u606f\uff0c\u4f8b\u5982\u9690\u85cf\u654f\u611f\u4fe1\u606f\u3001\u663e\u793a\u66f4\u53cb\u597d\u7684\u8c03\u8bd5\u4fe1\u606f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\u4e3e\u4f8b\u8bf4\u660e\uff1a<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>__construct() \u548c __destruct()<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">      <code>class DatabaseConnection {\n    private $connection;\n\n    public function __construct($host, $username, $password, $database) {\n        $this-&gt;connection = new mysqli($host, $username, $password, $database);\n    }\n\n    public function __destruct() {\n        $this-&gt;connection-&gt;close();\n    }\n\n    \/\/ ... other methods ...\n}<\/code>\n    <\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>__construct() \u5728\u521b\u5efa DatabaseConnection \u5bf9\u8c61\u65f6\u5efa\u7acb\u6570\u636e\u5e93\u8fde\u63a5\u3002<\/li>\n\n\n\n<li>__destruct() \u5728\u5bf9\u8c61\u9500\u6bc1\u524d\u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u91ca\u653e\u8d44\u6e90\u3002<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>__get() \u548c __set()<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-preformatted\">      <code>class User {\n    private $data = [];\n\n    public function __get($name) {\n        if (array_key_exists($name, $this-&gt;data)) {\n            return $this-&gt;data[$name];\n        }\n        return null;\n    }\n\n    public function __set($name, $value) {\n        $this-&gt;data[$name] = $value;\n    }\n}\n\n$user = new User();\n$user-&gt;name = \"John Doe\"; \/\/ \u8c03\u7528 __set() \u65b9\u6cd5\necho $user-&gt;name; \/\/ \u8c03\u7528 __get() \u65b9\u6cd5\uff0c\u8f93\u51fa: John Doe<\/code>\n    <\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>__get() \u5141\u8bb8\u8bbf\u95ee\u79c1\u6709\u5c5e\u6027 $data \u4e2d\u7684\u503c\u3002<\/li>\n\n\n\n<li>__set() \u5141\u8bb8\u8bbe\u7f6e\u79c1\u6709\u5c5e\u6027 $data \u4e2d\u7684\u503c\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u603b\u7ed3\uff1a<\/strong><\/p>\n\n\n\n<p>\u9b54\u672f\u65b9\u6cd5\u4e3a PHP \u5f00\u53d1\u8005\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u7075\u6d3b\u6027\uff0c\u5141\u8bb8\u5f00\u53d1\u8005\u81ea\u5b9a\u4e49\u5bf9\u8c61\u7684\u884c\u4e3a\uff0c\u5b9e\u73b0\u66f4\u4f18\u96c5\u7684\u4ee3\u7801\u7ed3\u6784\u548c\u66f4\u5f3a\u5927\u7684\u529f\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9b54\u672f\u65b9\u6cd5\u662fPHP\u4e2d\u4ee5\u53cc\u4e0b\u5212\u7ebf __ \u5f00\u5934\uff0c\u5e76\u5177\u6709\u7279\u6b8a\u7528\u9014\u7684\u65b9\u6cd5\u3002\u5b83\u4eec\u4f1a\u5728\u7279\u5b9a\u60c5\u51b5\u4e0b\u88ab\u81ea\u52a8\u8c03\u7528\uff0c\u8d4b\u4e88\u5f00\u53d1\u8005\u5728\u4e0d\u4fee &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.linhw.cn\/index.php\/2024\/08\/14\/php%e4%b8%ad%e7%9a%84%e9%ad%94%e6%9c%af%e6%96%b9%e6%b3%95\/\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201cPHP\u4e2d\u7684\u9b54\u672f\u65b9\u6cd5\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,9],"tags":[],"class_list":["post-35","post","type-post","status-publish","format-standard","hentry","category-php","category-9"],"_links":{"self":[{"href":"https:\/\/www.linhw.cn\/index.php\/wp-json\/wp\/v2\/posts\/35","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linhw.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linhw.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linhw.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linhw.cn\/index.php\/wp-json\/wp\/v2\/comments?post=35"}],"version-history":[{"count":1,"href":"https:\/\/www.linhw.cn\/index.php\/wp-json\/wp\/v2\/posts\/35\/revisions"}],"predecessor-version":[{"id":36,"href":"https:\/\/www.linhw.cn\/index.php\/wp-json\/wp\/v2\/posts\/35\/revisions\/36"}],"wp:attachment":[{"href":"https:\/\/www.linhw.cn\/index.php\/wp-json\/wp\/v2\/media?parent=35"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linhw.cn\/index.php\/wp-json\/wp\/v2\/categories?post=35"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linhw.cn\/index.php\/wp-json\/wp\/v2\/tags?post=35"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}