{"id":47487,"date":"2024-12-02T17:34:15","date_gmt":"2024-12-02T09:34:15","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47487\/"},"modified":"2024-12-02T17:34:15","modified_gmt":"2024-12-02T09:34:15","slug":"%e6%89%a9%e5%b1%95-php-%e5%87%bd%e6%95%b0%e5%8f%af%e4%bb%a5%e5%b8%a6%e6%9d%a5%e5%93%aa%e4%ba%9b%e5%a5%bd%e5%a4%84%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47487\/","title":{"rendered":"\u6269\u5c55 PHP \u51fd\u6570\u53ef\u4ee5\u5e26\u6765\u54ea\u4e9b\u597d\u5904\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u6269\u5c55 PHP \u51fd\u6570\u53ef\u4ee5\u5e26\u6765\u54ea\u4e9b\u597d\u5904\uff1f<\/h1>\n<p>\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u90fd\u6253\u5f00\u8fd9\u7bc7<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u6269\u5c55 PHP \u51fd\u6570\u53ef\u4ee5\u5e26\u6765\u54ea\u4e9b\u597d\u5904\uff1f\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\uff0c\u5b66\u4e0b\u53bb\u5427\uff01\u672c\u6587\u4e3b\u8981\u4f1a\u7ed9\u5927\u5bb6\u8bb2\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5927\u5bb6\u5bf9\u672c\u6587\u6709\u597d\u7684\u5efa\u8bae\u6216\u8005\u770b\u5230\u6709\u4e0d\u8db3\u4e4b\u5904\uff0c\u975e\u5e38\u6b22\u8fce\u5927\u5bb6\u79ef\u6781\u63d0\u51fa\uff01\u5728\u540e\u7eed\u6587\u7ae0\u6211\u4f1a\u7ee7\u7eed\u66f4\u65b0<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p>\u6269\u5c55 PHP \u51fd\u6570\u53ef\u589e\u5f3a\u529f\u80fd\u3001\u63d0\u9ad8\u53ef\u8bfb\u6027\u3001\u51cf\u5c11\u91cd\u590d\u4ee3\u7801\u548c\u6539\u5584\u6027\u80fd\u3002\u6709\u4e24\u79cd\u4e3b\u8981\u6269\u5c55\u65b9\u6cd5\uff1a1. declare() \u8bed\u53e5\uff08\u4f8b\u5982\uff0cdeclare(strict_types=1)\uff09\u5f3a\u5236\u6267\u884c\u7c7b\u578b\u5b89\u5168\uff1b2. \u547d\u540d\u7a7a\u95f4\uff08\u4f8b\u5982\uff0cnamespace MyNamespace;\uff09\u53ef\u7ec4\u7ec7\u51fd\u6570\u5e76\u907f\u514d\u51b2\u7a81\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729920145671c7c9199400.jpg\" class=\"aligncenter\" title=\"\u6269\u5c55 PHP \u51fd\u6570\u53ef\u4ee5\u5e26\u6765\u54ea\u4e9b\u597d\u5904\uff1f\u63d2\u56fe\" alt=\"\u6269\u5c55 PHP \u51fd\u6570\u53ef\u4ee5\u5e26\u6765\u54ea\u4e9b\u597d\u5904\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u6269\u5c55 PHP \u51fd\u6570\u7684\u597d\u5904<\/strong><\/p>\n<p><strong>\u7b80\u4ecb<\/strong><\/p>\n<p>\u6269\u5c55 PHP \u51fd\u6570\u53ef\u5e26\u6765\u4e00\u7cfb\u5217\u597d\u5904\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u589e\u5f3a\u529f\u80fd\u548c\u7075\u6d3b\u6027<\/li>\n<li>\u63d0\u9ad8\u53ef\u8bfb\u6027\u548c\u7ef4\u62a4\u6027<\/li>\n<li>\u51cf\u5c11\u91cd\u590d\u4ee3\u7801<\/li>\n<li>\u6539\u5584\u6027\u80fd<\/li>\n<\/ul>\n<p><strong>\u5982\u4f55\u6269\u5c55 PHP \u51fd\u6570<\/strong><\/p>\n<p>\u5728 PHP \u4e2d\uff0c\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u53ef\u7528\u4e8e\u6269\u5c55\u51fd\u6570\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528 <code>declare()<\/code> \u8bed\u53e5<\/strong><\/p>\n<pre>declare(strict_types=1);<\/pre>\n<p>\u6b64\u8bed\u53e5\u5f3a\u5236\u8981\u6c42\u51fd\u6570\u53c2\u6570\u548c\u8fd4\u56de\u503c\u7684\u7c7b\u578b\u7b26\u5408\u6307\u5b9a\u7c7b\u578b\uff0c\u4ece\u800c\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u7075\u6d3b\u6027\u3002<\/p>\n<p><strong>2. \u4f7f\u7528 <code>namespace<\/code><\/strong><\/p>\n<pre>namespace MyNamespace;\n\nfunction myFunction() {\n    \/\/ ...\n}<\/pre>\n<p>\u547d\u540d\u7a7a\u95f4\u5141\u8bb8\u5c06\u51fd\u6570\u7ec4\u7ec7\u5230\u547d\u540d\u7a7a\u95f4\u4e2d\uff0c\u4ece\u800c\u51cf\u5c11\u51b2\u7a81\u5e76\u6539\u5584\u4ee3\u7801\u7ec4\u7ec7\u3002<\/p>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p><strong>\u4f7f\u7528 <code>strict_types<\/code> \u63d0\u9ad8\u7c7b\u578b\u5b89\u5168\u6027<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>function addNumbers($a, $b) {\n    return $a + $b;\n}\n\necho addNumbers(1, \"2\"); \/\/ \u7ed3\u679c\u4e3a 12\uff0c\u800c\u4e0d\u662f \"12\"<\/pre>\n<p>\u542f\u7528 <code>strict_types<\/code> \u540e\uff0cPHP \u5c06\u68c0\u6d4b\u5230\u7b2c\u4e00\u4e2a\u53c2\u6570\u7684\u7c7b\u578b\u4e3a\u6574\u6570\uff0c\u800c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u7684\u7c7b\u578b\u4e3a\u5b57\u7b26\u4e32\uff0c\u5e76\u629b\u51fa\u4e00\u4e2a\u7c7b\u578b\u9519\u8bef\u5f02\u5e38\u3002<\/p>\n<pre>declare(strict_types=1);\n\nfunction addNumbers($a, $b) {\n    return $a + $b;\n}\n\necho addNumbers(1, \"2\"); \/\/ PHP \u629b\u51fa TypeError \u5f02\u5e38<\/pre>\n<p><strong>\u4f7f\u7528\u547d\u540d\u7a7a\u95f4\u7ec4\u7ec7\u51fd\u6570<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>function myFunction() {\n    \/\/ ...\n}\n\nfunction otherFunction() {\n    \/\/ ...\n}\n\n\/\/ \u51b2\u7a81\uff0c\u56e0\u4e3a\u4e24\u4e2a\u51fd\u6570\u90fd\u547d\u540d\u76f8\u540c<\/pre>\n<p>\u4f7f\u7528\u547d\u540d\u7a7a\u95f4\uff0c\u6211\u4eec\u53ef\u4ee5\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff1a<\/p>\n<pre>namespace MyNamespace;\n\nfunction myFunction() {\n    \/\/ ...\n}\n\nnamespace OtherNamespace;\n\nfunction myFunction() {\n    \/\/ ...\n}<\/pre>\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4e24\u4e2a <code>myFunction<\/code> \u51fd\u6570\u4e0d\u4f1a\u53d1\u751f\u51b2\u7a81\uff0c\u56e0\u4e3a\u5b83\u4eec\u4f4d\u4e8e\u4e0d\u540c\u7684\u547d\u540d\u7a7a\u95f4\u4e2d\u3002<\/p>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>\u6269\u5c55 PHP \u51fd\u6570\u53ef\u4ee5\u5e26\u6765\u663e\u7740\u7684\u4f18\u52bf\uff0c\u5305\u62ec\u589e\u5f3a\u529f\u80fd\u3001\u63d0\u9ad8\u4ee3\u7801\u8d28\u91cf\u548c\u63d0\u9ad8\u6027\u80fd\u3002\u901a\u8fc7\u4f7f\u7528\u8bf8\u5982 <code>strict_types<\/code> \u548c\u547d\u540d\u7a7a\u95f4\u4e4b\u7c7b\u7684\u6280\u672f\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u521b\u5efa\u66f4\u5065\u58ee\u3001\u66f4\u53ef\u8bfb\u4e14\u66f4\u6613\u4e8e\u7ef4\u62a4\u7684\u4ee3\u7801\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300a\u6269\u5c55 PHP \u51fd\u6570\u53ef\u4ee5\u5e26\u6765\u54ea\u4e9b\u597d\u5904\uff1f\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u7c73\u4e91\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6269\u5c55 PHP \u51fd\u6570\u53ef\u4ee5\u5e26\u6765\u54ea\u4e9b\u597d\u5904\uff1f \u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u90fd\u6253\u5f00\u8fd9\u7bc7\u300a\u6269\u5c55 PHP \u51fd\u6570\u53ef\u4ee5\u5e26\u6765\u54ea\u4e9b\u597d\u5904\uff1f\u300b\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\uff0c\u5b66\u4e0b\u53bb\u5427\uff01\u672c\u6587\u4e3b\u8981\u4f1a\u7ed9\u5927\u5bb6\u8bb2\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5927\u5bb6\u5bf9\u672c\u6587\u6709\u597d\u7684\u5efa\u8bae\u6216\u8005\u770b\u5230\u6709\u4e0d\u8db3\u4e4b\u5904\uff0c\u975e\u5e38\u6b22\u8fce\u5927\u5bb6\u79ef\u6781\u63d0\u51fa\uff01\u5728\u540e\u7eed\u6587\u7ae0\u6211\u4f1a\u7ee7\u7eed\u66f4\u65b0\u6587\u7ae0\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u6709\u6240\u5e2e\u52a9\uff01 \u6269\u5c55 PHP \u51fd\u6570\u53ef\u589e\u5f3a\u529f\u80fd\u3001\u63d0\u9ad8\u53ef\u8bfb\u6027\u3001\u51cf\u5c11\u91cd\u590d\u4ee3\u7801\u548c\u6539\u5584\u6027\u80fd\u3002\u6709\u4e24\u79cd\u4e3b\u8981\u6269\u5c55\u65b9\u6cd5\uff1a1. declare() \u8bed\u53e5\uff08\u4f8b\u5982\uff0cdeclare(strict_types=1)\uff09\u5f3a\u5236\u6267\u884c\u7c7b\u578b\u5b89\u5168\uff1b2. \u547d\u540d\u7a7a\u95f4\uff08\u4f8b\u5982\uff0cnamespace MyNamespace;\uff09\u53ef\u7ec4\u7ec7\u51fd\u6570\u5e76\u907f\u514d\u51b2\u7a81\u3002 \u6269\u5c55 PHP \u51fd\u6570\u7684\u597d\u5904 \u7b80\u4ecb \u6269\u5c55 PHP \u51fd\u6570\u53ef\u5e26\u6765\u4e00\u7cfb\u5217\u597d\u5904\uff0c\u5305\u62ec\uff1a \u589e\u5f3a\u529f\u80fd\u548c\u7075\u6d3b\u6027 \u63d0\u9ad8\u53ef\u8bfb\u6027\u548c\u7ef4\u62a4\u6027 \u51cf\u5c11\u91cd\u590d\u4ee3\u7801 \u6539\u5584\u6027\u80fd \u5982\u4f55\u6269\u5c55 PHP \u51fd\u6570 \u5728 PHP \u4e2d\uff0c\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u53ef\u7528\u4e8e\u6269\u5c55\u51fd\u6570\uff1a 1. \u4f7f\u7528 declare() \u8bed\u53e5 declare(strict_types=1); \u6b64\u8bed\u53e5\u5f3a\u5236\u8981\u6c42\u51fd\u6570\u53c2\u6570\u548c\u8fd4\u56de\u503c\u7684\u7c7b\u578b\u7b26\u5408\u6307\u5b9a\u7c7b\u578b\uff0c\u4ece\u800c\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u7075\u6d3b\u6027\u3002 2. \u4f7f\u7528 namespace namespace MyNamespace; function myFunction() { \/\/ &#8230; } \u547d\u540d\u7a7a\u95f4\u5141\u8bb8\u5c06\u51fd\u6570\u7ec4\u7ec7\u5230\u547d\u540d\u7a7a\u95f4\u4e2d\uff0c\u4ece\u800c\u51cf\u5c11\u51b2\u7a81\u5e76\u6539\u5584\u4ee3\u7801\u7ec4\u7ec7\u3002 \u5b9e\u6218\u6848\u4f8b \u4f7f\u7528 strict_types \u63d0\u9ad8\u7c7b\u578b\u5b89\u5168\u6027 \u8003\u8651\u4ee5\u4e0b\u4ee3\u7801\uff1a function addNumbers($a, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-47487","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47487","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=47487"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47487\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47487"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47487"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}