{"id":30743,"date":"2023-05-06T05:05:01","date_gmt":"2023-06-09T17:44:24","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e7%9a%84%e7%b1%bb%e5%92%8c%e6%96%b9%e6%b3%95\/"},"modified":"2025-08-12T20:36:58","modified_gmt":"2025-08-12T12:36:58","slug":"php%e7%9a%84%e7%b1%bb%e5%92%8c%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e7%9a%84%e7%b1%bb%e5%92%8c%e6%96%b9%e6%b3%95\/","title":{"rendered":"PHP\u7684\u7c7b\u548c\u65b9\u6cd5"},"content":{"rendered":"<h1>1. \u8bfe\u5802\u662f\u4ec0\u4e48\uff1f<\/h1>\n<p>\u53ef\u80fd\u6709\u4eba\u4f1a\u8ba4\u4e3a\uff1a\u201c\u660e\u660e\u6211\u90fd\u61c2\uff01\u201d\u53ef\u662f\uff0c\u4e00\u65e6\u8981\u89e3\u91ca\uff0c\u5374\u65e0\u6cd5\u7ed9\u51fa\u597d\u7684\u56de\u7b54\u3002\u8fd9\u5c31\u662f\u4e00\u4e2a\u7269\u4f53\u7684\u5806\u79ef\uff08\u6742\uff09\u3002\u4e8b\u5b9e\u4e0a\uff0c\u7528\u4e00\u53e5\u8bdd\u65e0\u6cd5\u89e3\u91ca\u6e05\u695a\uff0c\u6240\u4ee5\u6211\u4eec\u6765\u5177\u4f53\u63cf\u8ff0\u5427\u3002<\/p>\n<h1>2. \u516c\u5171\u7684<\/h1>\n<p>\u4ee5\u4e0b\u662f\u57fa\u672c\u7c7b\u7684\u5b9a\u4e49\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n\r\n<span class=\"kd\">class<\/span> <span class=\"nc\">classTest<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"k\">public<\/span> <span class=\"k\">function<\/span> <span class=\"n\">publicMethod<\/span><span class=\"p\">(){<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"s1\">'Public\u30e1\u30c3\u30bb\u30fc\u30b8'<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"k\">private<\/span> <span class=\"k\">function<\/span> <span class=\"n\">privateMethod<\/span><span class=\"p\">(){<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"s1\">'Private\u30e1\u30c3\u30bb\u30fc\u30b8'<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"k\">protected<\/span> <span class=\"k\">function<\/span> <span class=\"n\">protectedMethod<\/span><span class=\"p\">(){<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"s1\">'Protected\u30e1\u30c3\u30bb\u30fc\u30b8'<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"cp\">?&gt;<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n\r\n<span class=\"k\">require_once<\/span><span class=\"p\">(<\/span><span class=\"k\">__DIR__<\/span> <span class=\"mf\">.<\/span> <span class=\"s1\">'\/classTest.php'<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nv\">$app<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">classTest<\/span><span class=\"p\">();<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"nv\">$app<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">publicMethod<\/span><span class=\"p\">();<\/span>\r\n\r\n<span class=\"cp\">?&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u516c\u5171\u7684\uff1a\u53ef\u4ee5\u4ece\u4efb\u4f55\u5730\u65b9\u8bbf\u95ee\u3002<br \/>\n\u79c1\u6709\u7684\uff1a\u53ea\u80fd\u4ece\u540c\u4e00\u7c7b\u5185\u90e8\u8bbf\u95ee\u3002<br \/>\n\u53d7\u4fdd\u62a4\u7684\uff1a\u53ef\u4ee5\u4ece\u7c7b\u672c\u8eab\u548c\u7ee7\u627f\u7684\u7c7b\u8bbf\u95ee\u3002<\/p>\n<p>\u5982\u679c\u6267\u884ctest_sample.php\uff0c\u5e94\u8be5\u4f1a\u8f93\u51fa&#8221;Public\u6d88\u606f&#8221;\u3002<\/p>\n<h1>\u79c1\u4eba\u7684 de)<\/h1>\n<p>\u90a3\u4e48\u5728\u79c1\u4eba\u9886\u57df\u5462\uff1f<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n\r\n<span class=\"k\">require_once<\/span><span class=\"p\">(<\/span><span class=\"k\">__DIR__<\/span> <span class=\"mf\">.<\/span> <span class=\"s1\">'\/classTest.php'<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nv\">$app<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">classTest<\/span><span class=\"p\">();<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"nv\">$app<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">privateMethod<\/span><span class=\"p\">();<\/span>\r\n\r\n<span class=\"cp\">?&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u51fa\u73b0\u4ee5\u4e0b\u9519\u8bef\u3002<\/p>\n<p>\u81f4\u547d\u9519\u8bef\uff1a\u8c03\u7528\u79c1\u6709\u65b9\u6cd5\u301c<\/p>\n<p>\u5982\u679c\u4f60\u6dfb\u52a0\u4e86\u4ee5\u4e0b\u7684\u65b9\u6cd5\uff0c\u5e94\u8be5\u80fd\u591f\u6210\u529f\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">public<\/span> <span class=\"k\">function<\/span> <span class=\"n\">method<\/span><span class=\"p\">(){<\/span>\r\n        <span class=\"nv\">$message<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$this<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">privateMethod<\/span><span class=\"p\">();<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"nv\">$message<\/span><span class=\"p\">;<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n\r\n<span class=\"k\">require_once<\/span><span class=\"p\">(<\/span><span class=\"k\">__DIR__<\/span> <span class=\"mf\">.<\/span> <span class=\"s1\">'\/classTest.php'<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nv\">$app<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">classTest<\/span><span class=\"p\">();<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"nv\">$app<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">method<\/span><span class=\"p\">();<\/span>\r\n\r\n<span class=\"cp\">?&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u6837\u5e94\u8be5\u4f1a\u8f93\u51fa\u201c\u79c1\u4eba\u6d88\u606f\u201d\u3002<\/p>\n<h1>4. \u4fdd\u62a4\u7684<\/h1>\n<p>\u4e0b\u9762\u662f\u5173\u4e8e\u53d7\u4fdd\u62a4\u7684\u8bdd\u9898\u3002<br \/>\n\u5b83\u4e0e\u4e0a\u8ff0\u7684\u79c1\u6709\u76f8\u540c\u884c\u4e3a\u3002<br \/>\n\u6211\u4eec\u5c06\u8ba8\u8bba\u989d\u5916\u7684\u8bdd\u9898\u3002<\/p>\n<p>\u8ba9\u6211\u4eec\u5c1d\u8bd5\u4ece\u7ee7\u627f\u7c7b\u4e2d\u8fdb\u884c\u8bbf\u95ee\u3002<br \/>\n\u7ee7\u627f\u662f\u6307\u5b50\u7c7b\u80fd\u591f\u4f7f\u7528\u7236\u7c7b\u7684\u5904\u7406\u65b9\u5f0f\u3002<\/p>\n<p>\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u521b\u5efa\u4e00\u4e2a\u5b50\u7c7b\u5e76\u7ee7\u627f\u7236\u7c7b\u3002<\/p>\n<p>\u6211\u4f1a\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">class<\/span> <span class=\"nc\">childClass<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">classTest<\/span>\r\n<span class=\"p\">{<\/span>\r\n    <span class=\"k\">public<\/span> <span class=\"k\">function<\/span> <span class=\"n\">publicMethod<\/span><span class=\"p\">(){<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"s1\">'\u65b0Public\u30e1\u30c3\u30bb\u30fc\u30b8'<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"k\">public<\/span> <span class=\"k\">function<\/span> <span class=\"n\">method<\/span><span class=\"p\">(){<\/span>\r\n        <span class=\"nv\">$message<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$this<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">publicMethod<\/span><span class=\"p\">();<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"nv\">$message<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n\r\n<span class=\"k\">require_once<\/span><span class=\"p\">(<\/span><span class=\"k\">__DIR__<\/span> <span class=\"mf\">.<\/span> <span class=\"s1\">'\/classTest.php'<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nv\">$app<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">childClass<\/span><span class=\"p\">();<\/span>\r\n<span class=\"k\">echo<\/span> <span class=\"nv\">$app<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">method<\/span><span class=\"p\">();<\/span>\r\n\r\n<span class=\"cp\">?&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u5728childClass\u548cclassTest\u4e2d\u5b58\u5728\u76f8\u540c\u7684\u65b9\u6cd5\uff0c\u90a3\u4e48childClass\u7684\u65b9\u6cd5\u4f1a\u88ab\u8986\u76d6\u3002<br \/>\n\u8fd9\u4e2a\u8fc7\u7a0b\u88ab\u79f0\u4e3a\u65b9\u6cd5\u91cd\u5199\u3002<br \/>\n\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5c06\u8f93\u51fa&#8221;\u65b0Public\u6d88\u606f&#8221;\u3002<\/p>\n<p>\u90a3\u4e48\uff0c\u6211\u4eec\u56de\u5230\u521a\u624d\u7684\u8bdd\u9898\u3002<br \/>\n\u4ece\u5b50\u7c7b\u4e2d\u8c03\u7528\u4e00\u4e2a\u53d7\u4fdd\u62a4\u7684\u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">class<\/span> <span class=\"nc\">childClass<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">classTest<\/span>\r\n<span class=\"p\">{<\/span>\r\n\r\n    <span class=\"k\">public<\/span> <span class=\"k\">function<\/span> <span class=\"n\">method<\/span><span class=\"p\">(){<\/span>\r\n        <span class=\"nv\">$message<\/span> <span class=\"o\">=<\/span> <span class=\"nv\">$this<\/span><span class=\"o\">-&gt;<\/span><span class=\"nf\">protectedMethod<\/span><span class=\"p\">();<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"nv\">$message<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u6837\u4e00\u6765\uff0c\u5e94\u8be5\u4f1a\u8f93\u51fa&#8221;Protected\u6d88\u606f&#8221;\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. \u8bfe\u5802\u662f\u4ec0\u4e48\uff1f \u53ef\u80fd\u6709\u4eba\u4f1a\u8ba4\u4e3a\uff1a\u201c\u660e\u660e\u6211\u90fd\u61c2\uff01\u201d\u53ef\u662f\uff0c\u4e00\u65e6\u8981\u89e3\u91ca\uff0c\u5374\u65e0\u6cd5\u7ed9\u51fa\u597d\u7684\u56de\u7b54\u3002\u8fd9\u5c31\u662f\u4e00\u4e2a\u7269\u4f53\u7684\u5806\u79ef [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30743","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>PHP\u7684\u7c7b\u548c\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8ePHP\u7684\u7c7b\u548c\u65b9\u6cd5\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/php\u7684\u7c7b\u548c\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta 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