{"id":30164,"date":"2023-05-23T00:58:32","date_gmt":"2023-01-21T13:40:24","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%85%b3%e4%ba%8ephp%e7%9a%84%e7%b1%bb\/"},"modified":"2025-08-12T17:52:57","modified_gmt":"2025-08-12T09:52:57","slug":"%e5%85%b3%e4%ba%8ephp%e7%9a%84%e7%b1%bb","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%85%b3%e4%ba%8ephp%e7%9a%84%e7%b1%bb\/","title":{"rendered":"\u5173\u4e8ePHP\u7684\u7c7b"},"content":{"rendered":"<p>\u8fd9\u662f\u5173\u4e8e\u5b66\u4e60PHP\u7c7b\u7684\u8f93\u51fa\u3002<\/p>\n<h2>\u73ed\u7ea7<\/h2>\n<p>\u7c7b\u662f\u5305\u542b\u5e38\u91cf\uff0c\u53d8\u91cf\uff08\u5c5e\u6027\uff09\u548c\u51fd\u6570\uff08\u65b9\u6cd5\uff09\u7684\u96c6\u5408\u3002<br \/>\n\u203b PHP\u624b\u518c\u4e2d\u5199\u7740\u201c\u7c7b\u4e2d\u53ef\u4ee5\u5305\u542b\u5c5e\u6027\u548c\u65b9\u6cd5\u201d\u3002<\/p>\n<pre class=\"post-pre\"><code>&lt;?php\r\nclass SimpleClass\r\n{\r\n    \/\/ \u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5ba3\u8a00\r\n    public $var = 'a default value';\r\n    \r\n    \/\/ \u30e1\u30bd\u30c3\u30c9\u306e\u5ba3\u8a00\r\n    public function displayVar() {\r\n        echo $this-&gt;var;\r\n    }\r\n}\r\n?&gt;\r\n<\/code><\/pre>\n<h2>\u5982\u540c\u5b83\u7684\u540d\u7a31\u6240\u793a\uff0c\u7591\u4f3c\u8b8a\u6578$this\u3002<\/h2>\n<p>\u5728PHP\u624b\u518c\u4e2d\u5199\u7740\uff1a\u201c\u5f53\u65b9\u6cd5\u4ece\u5bf9\u8c61\u4e0a\u4e0b\u6587\u88ab\u8c03\u7528\u65f6\uff0c\u4f2a\u53d8\u91cf$this\u53ef\u7528\u3002$this\u8868\u793a\u8c03\u7528\u8005\u7684\u5bf9\u8c61\u503c\u3002\u201d\u3002<br \/>\n\u521b\u5efa\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\u5e76\u8fdb\u884c\u8003\u5bdf\u3002<\/p>\n<pre class=\"post-pre\"><code>&lt;?php\r\n\r\n$var = 'global value';\r\nclass SimpleClass\r\n{\r\n    \/\/ \u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u5ba3\u8a00\r\n    public $var = 'property value';\r\n    \r\n    \/\/ \u30e1\u30bd\u30c3\u30c9\u306e\u5ba3\u8a00\r\n    public function displayVar() {\r\n        $var = 'local value';\r\n        echo $this-&gt;var;  \/\/ 'property value'\u3092\u51fa\u529b\r\n        echo \"<span class=\"nt\">&lt;br&gt;<\/span>\";\r\n        echo $var;  \/\/ 'local value'\u3092\u51fa\u529b\r\n        echo \"<span class=\"nt\">&lt;br&gt;<\/span>\";\r\n        echo $GLOBALS['var'];  \/\/ 'global value'\u3092\u51fa\u529b\r\n    }\r\n}\r\n\r\n$simpleclass = new SimpleClass;\r\n$simpleclass-&gt;displayVar();\r\n<\/code><\/pre>\n<p>$this-&gt;var \u662f\u4e00\u4e2a\u5728\u7c7b\u5185\u58f0\u660e\u7684\u5c5e\u6027\uff0c\u5b83\u7684\u503c\u4e3a &#8216;property value&#8217;\u3002<br \/>\n$var \u662f\u4e00\u4e2a\u5728\u65b9\u6cd5\u5185\u58f0\u660e\u7684\u53d8\u91cf\uff0c\u5b83\u7684\u503c\u4e3a &#8216;local value&#8217;\u3002<br \/>\n$GLOBALS[&#8216;var&#8217;] \u662f\u4e00\u4e2a\u5728\u7c7b\u5916\u58f0\u660e\u7684\u53d8\u91cf\uff0c\u5b83\u7684\u503c\u4e3a &#8216;global value&#8217;\u3002<\/p>\n<p>\u4ece\u4e0a\u8ff0\u5185\u5bb9\u53ef\u4ee5\u770b\u51fa\uff0c\u4f2a\u53d8\u91cf$this\u662f\u7528\u6765\u5f15\u7528\u5728\u5176\u81ea\u8eab\u7c7b\u4e2d\u58f0\u660e\u7684\u5c5e\u6027\u503c\u7684\u3002<\/p>\n<h2>\u53c2\u8003\u6587\u732e\u7684\u4e2d\u6587\u610f\u601d\u662f\u6307\u5728\u5b66\u672f\u7814\u7a76\u6216\u5199\u4f5c\u8fc7\u7a0b\u4e2d\u4f7f\u7528\u7684\u5f15\u7528\u7684\u4e66\u9762\u6750\u6599\u3002<\/h2>\n<p>PHP\u624b\u518c<br \/>\n\u6211\u4e0d\u660e\u767dPHP\u4e2d\u7684this\u548c-&gt;\u7684\u542b\u4e49\u3002Teratail\u3010\u30c6\u30e9\u30c6\u30a4\u30eb\u3011\uff5c\u4ee5IT\u5de5\u7a0b\u5e08\u4e3a\u91cd\u70b9\u7684\u95ee\u7b54\u7f51\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u662f\u5173\u4e8e\u5b66\u4e60PHP\u7c7b\u7684\u8f93\u51fa\u3002 \u73ed\u7ea7 \u7c7b\u662f\u5305\u542b\u5e38\u91cf\uff0c\u53d8\u91cf\uff08\u5c5e\u6027\uff09\u548c\u51fd\u6570\uff08\u65b9\u6cd5\uff09\u7684\u96c6\u5408\u3002 \u203b PHP\u624b\u518c\u4e2d\u5199\u7740\u201c\u7c7b [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30164","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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