{"id":30109,"date":"2024-02-11T19:04:32","date_gmt":"2023-06-10T22:47:14","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e3%80%91%e5%85%b3%e4%ba%8e%e6%8a%bd%e8%b1%a1%e7%b1%bb\/"},"modified":"2025-08-12T17:36:25","modified_gmt":"2025-08-12T09:36:25","slug":"%e3%80%90php%e3%80%91%e5%85%b3%e4%ba%8e%e6%8a%bd%e8%b1%a1%e7%b1%bb","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90php%e3%80%91%e5%85%b3%e4%ba%8e%e6%8a%bd%e8%b1%a1%e7%b1%bb\/","title":{"rendered":"\u3010PHP\u3011\u5173\u4e8e\u62bd\u8c61\u7c7b"},"content":{"rendered":"<h3>\u62bd\u8c61\u7c7b\u662f\u4ec0\u4e48\u610f\u601d\u3002<\/h3>\n<p>\u62bd\u8c61\u7c7b\u662f\u901a\u8fc7abstract\u5173\u952e\u5b57\u5b9a\u4e49\u7684\uff0c\u5177\u6709\u4ee5\u4e0b\u7279\u5f81\u3002<\/p>\n<ul class=\"post-ul\">\n\u5bfe\u8c61\u306e\u5177\u8c61\u30af\u30e9\u30b9(\u203b\u901a\u5e38\u306e\u30af\u30e9\u30b9)\u306b\u30d7\u30ed\u30d1\u30c6\u30a3\u3082\u3057\u304f\u306f\u30e1\u30bd\u30c3\u30c9\u3092\u5f37\u5236\u7684\u306b\u5b9a\u7fa9\u3055\u305b\u308b<br \/>\n\u62bd\u8c61\u30af\u30e9\u30b9\u5358\u4f53\u3067\u306f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u306a\u3044<br \/>\nabstract\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u305f\u30e1\u30bd\u30c3\u30c9\u306f\u5177\u4f53\u7684\u306a\u51e6\u7406\u3092\u66f8\u304f\u3053\u3068\u306f\u3067\u304d\u306a\u3044<br \/>\n\u62bd\u8c61\u30af\u30e9\u30b9\u5185\u3067\u5177\u8c61\u30af\u30e9\u30b9\u540c\u69d8\u3001\u5177\u4f53\u7684\u306a\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3001\u7d99\u627f\u3055\u305b\u308b\u3053\u3068\u3082\u3067\u304d\u308b\n<\/ul>\n<p>\u8bf7\u53c2\u8003\u4ee5\u4e0b\u62bd\u8c61\u7c7b\u7684\u4f8b\u5b50\uff0c\u5176\u4e2d\u5f15\u7528\u4e86PHP\u516c\u5f0f\u53c2\u8003\u624b\u518c\u4e2d\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">abstract<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">AbstractClass<\/span> <span class=\"c1\">\/\/ \u62bd\u8c61\u30af\u30e9\u30b9<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"c1\">\/\/ \u62e1\u5f35\u30af\u30e9\u30b9\u306b\u4ee5\u4e0b\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u5b9a\u7fa9\u3092\u5f37\u5236\u3059\u308b<\/span>\r\n    <span class=\"k\">abstract<\/span> <span class=\"k\">protected<\/span> <span class=\"k\">function<\/span> <span class=\"n\">getValue<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">abstract<\/span> <span class=\"k\">protected<\/span> <span class=\"k\">function<\/span> <span class=\"n\">prefixValue<\/span><span class=\"p\">(<\/span><span class=\"nv\">$prefix<\/span><span class=\"p\">);<\/span>\r\n\r\n    <span class=\"c1\">\/\/ \u901a\u5e38\u306e\u30e1\u30bd\u30c3\u30c9<\/span>\r\n    <span class=\"k\">public<\/span> <span class=\"k\">function<\/span> <span class=\"n\">printOut<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"k\">print<\/span> <span class=\"nv\">$this<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">getValue<\/span><span class=\"p\">()<\/span> <span class=\"mf\">.<\/span> <span class=\"s2\">\"<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"kd\">class<\/span> <span class=\"nc\">ConcreteClass<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">AbstractClass<\/span> <span class=\"c1\">\/\/ \u5177\u8c61\u30af\u30e9\u30b9<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"k\">protected<\/span> <span class=\"k\">function<\/span> <span class=\"n\">getValue<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span> <span class=\"c1\">\/\/ AbstractClass\u3067\u5b9a\u7fa9\u3057\u305fabstract\u30e1\u30bd\u30c3\u30c9<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"s2\">\"ConcreteClass\"<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"k\">public<\/span> <span class=\"k\">function<\/span> <span class=\"n\">prefixValue<\/span><span class=\"p\">(<\/span><span class=\"nv\">$prefix<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span> <span class=\"c1\">\/\/ AbstractClass\u3067\u5b9a\u7fa9\u3057\u305fabstract\u30e1\u30bd\u30c3\u30c9<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"s2\">\"<\/span><span class=\"si\">{<\/span><span class=\"nv\">$prefix<\/span><span class=\"si\">}<\/span><span class=\"s2\">ConcreteClass\"<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nv\">$class<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">ConcreteClass<\/span><span class=\"p\">;<\/span>\r\n<span class=\"nv\">$class<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">printOut<\/span><span class=\"p\">();<\/span> <span class=\"c1\">\/\/ =&gt; 'ConcreteClass\"'<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"nv\">$class<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">prefixValue<\/span><span class=\"p\">(<\/span><span class=\"s1\">'FOO_'<\/span><span class=\"p\">)<\/span> <span class=\"mf\">.<\/span><span class=\"s2\">\"<\/span><span class=\"se\">\\n<\/span><span class=\"s2\">\"<\/span><span class=\"p\">;<\/span> <span class=\"c1\">\/\/ =&gt; 'FOO_ConcreteClass'<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c<br \/>\n\u5177\u4f53\u7c7bConcreteClass\u7ee7\u627f\u4e86\u62bd\u8c61\u7c7bAbstractClass\u3002<br \/>\n\u5728ConcreteClass\u4e2d\uff0c\u663e\u5f0f\u5b9a\u4e49\u4e86\u62bd\u8c61\u7c7bAbstractClass\u4e2d\u6240\u5b9a\u4e49\u7684\u4e09\u4e2a\u65b9\u6cd5\u4e2d\u7684\u62bd\u8c61\u65b9\u6cd5getValue\u548cprefixValue\u3002<br \/>\n\u6b64\u5916\uff0cprintOut\u65b9\u6cd5\u53ef\u4ee5\u50cf\u666e\u901a\u7ee7\u627f\u4e00\u6837\uff0c\u5728\u5177\u4f53\u7c7b\u5185\u90e8\u4e0d\u5b9a\u4e49\u4e5f\u53ef\u4ee5\u8c03\u7528\u3002<\/p>\n<p>\u5982\u679c\u5728ConcreteClass\u7c7b\u5185\u672a\u5b9a\u4e49\u8fd9\u4e24\u4e2a\u65b9\u6cd5\uff0c\u5219\u4f1a\u53d1\u751f\u4ee5\u4e0b\u9519\u8bef\u3002<\/p>\n<pre class=\"post-pre\"><code>class ConcreteClass extends AbstractClass\r\n{\r\n}\r\n\/\/ =&gt; Fatal error: Class ConcreteClass contains 2 abstract methods and must therefore be declared abstract or implement the remaining methods (AbstractClass::getValue, AbstractClass::prefixValue) in \/tmp\/preview on line 15\r\n<\/code><\/pre>\n<p>\u5982\u679c\u53ea\u662f\u7b80\u5355\u7684\u7ee7\u627f\uff0c\u5373\u4f7f\u6ca1\u6709\u660e\u786e\u5b9a\u4e49\u4e5f\u53ef\u4ee5\u8c03\u7528\uff0c<br \/>\n\u4f46\u662f\u5728\u7ee7\u627f\u4e86\u62bd\u8c61\u7c7b\u7684\u5177\u4f53\u7c7b\u4e2d\uff0c<br \/>\n\u5982\u679c\u4e0d\u5b9a\u4e49\u62bd\u8c61\u65b9\u6cd5\u5c31\u4f1a\u53d1\u751f\u9519\u8bef\uff0c<br \/>\n\u56e0\u6b64\u5fc5\u987b\u901a\u8fc7\u7ee7\u627f\u5177\u4f53\u7c7b\u6765\u5f3a\u5236\u663e\u5f0f\u5b9a\u4e49\u5c5e\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n<h2>\u6458\u8981\u7684\u91cd\u8981\u6027\u548c\u76ee\u7684<\/h2>\n<p>\u4e3a\u4ec0\u4e48\u8981\u4e13\u95e8\u521b\u5efa\u62bd\u8c61\u7c7b\u5e76\u8ba9\u5177\u4f53\u7c7b\u7ee7\u627f\u5b83\u6765\u5f3a\u5236\u5b9a\u4e49\u5c5e\u6027\u548c\u65b9\u6cd5\u5462\uff1f\u56e0\u4e3a\u8fd9\u5bf9\u56e2\u961f\u5f00\u53d1\u975e\u5e38\u6709\u7528\u3002<\/p>\n<p>\u5728\u7ee7\u627f\u62bd\u8c61\u7c7b\u7684\u5177\u4f53\u7c7b\u4e2d\uff0c\u6709\u4e00\u4e2a\u89c4\u5219\u5fc5\u987b\u9075\u5b88\uff0c\u5c31\u662f\u5fc5\u987b\u5b9a\u4e49\u62bd\u8c61\u5c5e\u6027\u548c\u65b9\u6cd5\u3002\u8fd9\u6837\u53ef\u4ee5\u4fdd\u8bc1\u5b83\u662f\u6d3e\u751f\u7c7b\u5177\u6709\u5171\u540c\u529f\u80fd\uff0c\u51cf\u5c11\u529f\u80fd\u7684\u7f3a\u5931\u3002\u6b64\u5916\uff0c\u7ee7\u627f\u7684\u7c7b\u7fa4\u4e5f\u53ef\u4ee5\u66f4\u660e\u786e\u5730\u8868\u660e\u5b83\u4eec\u90fd\u662f\u5177\u6709\u76f8\u4f3c\u529f\u80fd\u7684\u7c7b\u3002<\/p>\n<p>\u968f\u7740\u9879\u76ee\u89c4\u6a21\u7684\u589e\u957f\u548c\u5f00\u53d1\u4eba\u5458\u6570\u91cf\u7684\u589e\u52a0\uff0c\u4ece\u6587\u4ef6\u540d\u548c\u7c7b\u540d\u7b49\u65b9\u9762\u63a8\u6d4b\u5176\u529f\u80fd\u53d8\u5f97\u66f4\u52a0\u91cd\u8981\u3002\u62bd\u8c61\u7c7b\u5728\u8fd9\u65b9\u9762\u8d77\u5230\u4e86\u8f85\u52a9\u7684\u4f5c\u7528\u3002<\/p>\n<h3>\u8bf7\u53c2\u8003<\/h3>\n<p><a><\/a><a><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u62bd\u8c61\u7c7b\u662f\u4ec0\u4e48\u610f\u601d\u3002 \u62bd\u8c61\u7c7b\u662f\u901a\u8fc7abstract\u5173\u952e\u5b57\u5b9a\u4e49\u7684\uff0c\u5177\u6709\u4ee5\u4e0b\u7279\u5f81\u3002 \u5bfe\u8c61\u306e\u5177\u8c61\u30af\u30e9\u30b9(\u203b\u901a\u5e38\u306e\u30af\u30e9\u30b9 [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30109","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>\u3010PHP\u3011\u5173\u4e8e\u62bd\u8c61\u7c7b - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u3010PHP\u3011\u5173\u4e8e\u62bd\u8c61\u7c7b\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, 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