{"id":30723,"date":"2023-11-08T23:21:20","date_gmt":"2023-07-16T17:45:15","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8php%e4%b8%ad%ef%bc%8c%e9%9d%99%e6%80%81static%e6%8c%87%e7%9a%84%e6%98%af\/"},"modified":"2025-08-12T20:30:54","modified_gmt":"2025-08-12T12:30:54","slug":"%e5%9c%a8php%e4%b8%ad%ef%bc%8c%e9%9d%99%e6%80%81static%e6%8c%87%e7%9a%84%e6%98%af","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8php%e4%b8%ad%ef%bc%8c%e9%9d%99%e6%80%81static%e6%8c%87%e7%9a%84%e6%98%af\/","title":{"rendered":"\u5728PHP\u4e2d\uff0c\u9759\u6001(static)\u6307\u7684\u662f"},"content":{"rendered":"<h2>\u9759\u6001\u6982\u8981<\/h2>\n<p>\u6765\u81eaPHP\u624b\u518c<\/p>\n<blockquote><p>\u901a\u8fc7\u5c06\u7c7b\u5c5e\u6027\u6216\u65b9\u6cd5\u58f0\u660e\u4e3a\u9759\u6001(static)\uff0c\u53ef\u4ee5\u5728\u4e0d\u9700\u8981\u5b9e\u4f8b\u5316\u7c7b\u7684\u60c5\u51b5\u4e0b\u8bbf\u95ee\u3002\u9759\u6001\u5c5e\u6027\u65e0\u6cd5\u4ece\u5df2\u5b9e\u4f8b\u5316\u7684\u7c7b\u5bf9\u8c61\u4e2d\u8bbf\u95ee\u3002<\/p><\/blockquote>\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0c\u5982\u679c\u60f3\u4ece\u7c7b\u5916\u90e8\u8bbf\u95ee\u9759\u6001\u65b9\u6cd5\uff08static\u65b9\u6cd5\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528Foo::static\u6765\u8bbf\u95ee\u8be5\u65b9\u6cd5\uff0c\u4f46\u4e0d\u80fd\u4f7f\u7528foo-&gt;static()\u8fd9\u79cd\u5f62\u5f0f\u6765\u8bbf\u95ee\u3002<\/p>\n<h2>\u9759\u6001\u65b9\u6cd5\uff08\u5373\u9759\u6001\u65b9\u6cd5\uff09\u5907\u5fd8\u5f55<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u9759\u7684\uff08\u9759\u7684\u30e1\u30bd\u30c3\u30c9\u3001\u9759\u7684\u30d7\u30ed\u30d1\u30c6\u30a3\uff09\u3068\u3044\u3046\u306e\u306f\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3057\u306a\u3044\u3067\u4f7f\u3046\u3068\u3044\u3046\u3053\u3068<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u306a\u306e\u3067\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u5f71\u97ff\u3092\u53d7\u3051\u306a\u3044\uff08\u4fdd\u5b88\u3057\u3084\u3059\u3044\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u57fa\u672c\u5ba3\u8a00\u3055\u308c\u305f\u30af\u30e9\u30b9\u5185\u3067\u4f7f\u7528\u3059\u308b\u30b1\u30fc\u30b9\u304c\u591a\u3044\uff08self::xxx\u306e\u5f62\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5e73\u305f\u304f\u8a00\u3046\u3068\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u304c\u5fc5\u8981\u306a\u6642\u306f\u3001static\u306f\u3064\u3051\u306a\u3044\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u304c\u4e0d\u8981\u306a\u6642\u306fstatic\u3092\u3064\u3051\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>\u30a2\u30af\u30bb\u30b9\u3059\u308b\u969b\u306f\u3001::\u3092\u4f7f\u7528\u3059\u308b\u3002<\/p>\n<p>::\u306f\u30b9\u30b3\u30fc\u30d7\u5b9a\u7fa9\u6f14\u7b97\u5b50\u3068\u8a00\u3046<br \/>\n\u7121\u95c7\u306b\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5b9f\u88c5\u3057\u3066\u4fdd\u5b88\u7bc4\u56f2\u3092\u5e83\u3052\u306a\u3044\u305f\u3081\u306b\u9759\u7684\u3092\u5229\u7528\u3059\u308b<\/p>\n<h2>\u8bbf\u95ee\u9759\u6001\u65b9\u6cd5\u7684\u793a\u4f8b<\/h2>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n\r\n<span class=\"kd\">class<\/span> <span class=\"nc\">Foo<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">public<\/span> <span class=\"k\">static<\/span> <span class=\"k\">function<\/span> <span class=\"n\">aStaticMethod<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">echo<\/span> <span class=\"s2\">\"Hello Static!!!\"<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nc\">Foo<\/span><span class=\"o\">::<\/span><span class=\"nf\">aStaticMethod<\/span><span class=\"p\">();<\/span>\r\n<span class=\"c1\">\/\/or<\/span>\r\n<span class=\"nv\">$classname<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'Foo'<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$classname<\/span><span class=\"o\">::<\/span><span class=\"nf\">aStaticMethod<\/span><span class=\"p\">();<\/span>\r\n<span class=\"c1\">\/\/\u51fa\u529b\u7d50\u679c<\/span>\r\n<span class=\"s2\">\"Hello Static!!!\"<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"c1\">\/\/static\u306a\u30e1\u30bd\u30c3\u30c9\u306b\u306f-&gt;\u3067\u306f\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044<\/span>\r\n<span class=\"nv\">$foo<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">Foo<\/span><span class=\"p\">();<\/span>\r\n<span class=\"nv\">$foo<\/span><span class=\"o\">-&gt;<\/span><span class=\"n\">aStaticMethod<\/span><span class=\"p\">;<\/span>\r\n<span class=\"c1\">\/\/\u51fa\u529b\u7d50\u679c<\/span>\r\n<span class=\"no\">PHP<\/span> <span class=\"nc\">Notice<\/span><span class=\"o\">:<\/span>  <span class=\"nc\">Undefined<\/span> <span class=\"n\">property<\/span><span class=\"o\">:<\/span><span class=\"n\">xxx<\/span>\r\n<span class=\"cp\">?&gt;<\/span>\r\n\r\n<\/code><\/pre>\n<h3>\u8bf7\u63d0\u4f9b\u4ee5\u4e0b\u539f\u6587\uff0c\u6211\u4f1a\u4e3a\u60a8\u8fdb\u884c\u4e2d\u6587\u91cd\u8ff0\u3002<\/h3>\n<p>PHP\uff1a\u9759\u6001\u65b9\u6cd5\u7684\u76ee\u7684\u662f\u4ec0\u4e48\uff1f<br \/>\nself::\u548c$this-&gt;\u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f<br \/>\nPHP-\u4ec0\u4e48\u662fOOP\uff1f<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9759\u6001\u6982\u8981 \u6765\u81eaPHP\u624b\u518c \u901a\u8fc7\u5c06\u7c7b\u5c5e\u6027\u6216\u65b9\u6cd5\u58f0\u660e\u4e3a\u9759\u6001(static)\uff0c\u53ef\u4ee5\u5728\u4e0d\u9700\u8981\u5b9e\u4f8b\u5316\u7c7b\u7684\u60c5\u51b5\u4e0b\u8bbf\u95ee\u3002\u9759\u6001 [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30723","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) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5728PHP\u4e2d\uff0c\u9759\u6001(static)\u6307\u7684\u662f - 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