{"id":48450,"date":"2024-12-02T09:48:12","date_gmt":"2024-12-02T01:48:12","guid":{"rendered":"https:\/\/fwq.ai\/blog\/48450\/"},"modified":"2024-12-02T09:48:12","modified_gmt":"2024-12-02T01:48:12","slug":"%e5%a6%82%e4%bd%95%e9%81%bf%e5%85%8dphp%e5%87%bd%e6%95%b0%e4%b8%ad%e7%9a%84%e9%94%99%e8%af%af%e5%8f%82%e6%95%b0%e7%b1%bb%e5%9e%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/48450\/","title":{"rendered":"\u5982\u4f55\u907f\u514dPHP\u51fd\u6570\u4e2d\u7684\u9519\u8bef\u53c2\u6570\u7c7b\u578b\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u907f\u514dPHP\u51fd\u6570\u4e2d\u7684\u9519\u8bef\u53c2\u6570\u7c7b\u578b\uff1f<\/h1>\n

\u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60\u6587\u7ae0<\/span>\u5f88\u6709\u610f\u601d\uff1f\u6709\u610f\u601d\u5c31\u5bf9\u4e86\uff01\u4eca\u5929\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u5982\u4f55\u907f\u514dPHP\u51fd\u6570\u4e2d\u7684\u9519\u8bef\u53c2\u6570\u7c7b\u578b\uff1f\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\uff0c\u82e5\u662f\u5728\u5b66\u4e60\u4e2d\u5bf9\u5176\u4e2d\u90e8\u5206\u77e5\u8bc6\u70b9\u6709\u7591\u95ee\uff0c\u6216\u8bb8\u770b\u4e86\u672c\u6587\u5c31\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n

PHP \u4e2d\u907f\u514d\u9519\u8bef\u53c2\u6570\u7c7b\u578b\u7684 5 \u4e2a\u65b9\u6cd5\uff1a\u542f\u7528\u4e25\u683c\u7c7b\u578b\u68c0\u67e5 (declare(strict_types=1);)\u4f7f\u7528\u7c7b\u578b\u63d0\u793a\u6807\u6ce8\u51fd\u6570\u53c2\u6570\u548c\u8fd4\u56de\u503c\u6839\u636e\u9700\u8981\u8fdb\u884c\u7c7b\u578b\u8f6c\u6362 (settype())\u8bbe\u7f6e\u53c2\u6570\u9ed8\u8ba4\u503c\u9a8c\u8bc1\u548c\u6d88\u6bd2\u7528\u6237\u8f93\u5165<\/p>\n

\"\u5982\u4f55\u907f\u514dPHP\u51fd\u6570\u4e2d\u7684\u9519\u8bef\u53c2\u6570\u7c7b\u578b\uff1f\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u907f\u514d PHP \u51fd\u6570\u4e2d\u7684\u9519\u8bef\u53c2\u6570\u7c7b\u578b<\/strong><\/p>\n

\u5f15\u8a00<\/strong><\/p>\n

\u5728 PHP \u4e2d\uff0c\u51fd\u6570\u53c2\u6570\u7c7b\u578b\u68c0\u67e5\u5bf9\u4e8e\u907f\u514d\u9519\u8bef\u548c\u786e\u4fdd\u4ee3\u7801\u5065\u58ee\u6027\u81f3\u5173\u91cd\u8981\u3002\u9519\u8bef\u7684\u53c2\u6570\u7c7b\u578b\u4f1a\u5bfc\u81f4\u610f\u5916\u7ed3\u679c\u548c\u96be\u4ee5\u8c03\u8bd5\u7684\u9519\u8bef\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u907f\u514d PHP \u51fd\u6570\u4e2d\u9519\u8bef\u53c2\u6570\u7c7b\u578b\u7684\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u5b9e\u6218\u6848\u4f8b\u4ee5\u4f9b\u7406\u89e3\u3002<\/p>\n

\u5f3a\u5236\u53c2\u6570\u7c7b\u578b<\/strong><\/p>\n

PHP \u63d0\u4f9b\u4e86 declare(strict_types=1);<\/code> \u6307\u4ee4\uff0c\u7528\u4e8e\u542f\u7528\u4e25\u683c\u7c7b\u578b\u68c0\u67e5\u3002\u5f53\u542f\u7528\u65f6\uff0c\u51fd\u6570\u5c06\u68c0\u67e5\u53c2\u6570\u7c7b\u578b\uff0c\u5e76\u9488\u5bf9\u4e0d\u5339\u914d\u7684\u7c7b\u578b\u5f15\u53d1\u7c7b\u578b\u9519\u8bef\u3002<\/p>\n

\u4f8b 1:<\/strong><\/p>\n

declare(strict_types=1);\n\nfunction sum(int $a, int $b): int {\n    return $a + $b;\n}\n\necho sum(1, \"2\"); \/\/ TypeError: Argument 2 passed to sum() must be of the type integer, string given<\/pre>\n
\u4f7f\u7528\u7c7b\u578b\u63d0\u793a<\/strong><\/p>\n
\u51fd\u6570\u53c2\u6570\u548c\u8fd4\u56de\u503c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u7c7b\u578b\u63d0\u793a\u8fdb\u884c\u7c7b\u578b\u6807\u6ce8\u3002\u8fd9\u53ef\u4ee5\u8ba9\u5f00\u53d1\u4eba\u5458\u548c IDE \u6e05\u695a\u5730\u4e86\u89e3\u51fd\u6570\u7684\u9884\u671f\u53c2\u6570\u7c7b\u578b\uff0c\u5e76\u6709\u52a9\u4e8e\u907f\u514d\u9519\u8bef\u3002<\/p>\n
\u4f8b 2:<\/strong><\/p>\n
function sum(int $a, int $b): int {\n    return $a + $b;\n}\n\necho sum(1, 2); \/\/ \u8f93\u51fa: 3<\/pre>\n
\u7c7b\u578b\u8f6c\u6362<\/strong><\/p>\n
\u6709\u65f6\u53ef\u80fd\u9700\u8981\u663e\u5f0f\u8f6c\u6362\u53c2\u6570\u7c7b\u578b\u4ee5\u5339\u914d\u51fd\u6570\u9884\u671f\u3002\u53ef\u4ee5\u4f7f\u7528 settype()<\/code> \u6216\u5176\u4ed6\u7c7b\u578b\u8f6c\u6362\u51fd\u6570\u6765\u5b9e\u73b0\u3002<\/p>\n
\u4f8b 3:<\/strong><\/p>\n
function sum(int $a, int $b) {\n    if (!is_int($a)) {\n        settype($a, \"integer\");\n    }\n    if (!is_int($b)) {\n        settype($b, \"integer\");\n    }\n\n    return $a + $b;\n}\n\necho sum(\"1\", \"2\"); \/\/ \u8f93\u51fa: 3<\/pre>\n
\u53c2\u6570\u9ed8\u8ba4\u503c<\/strong><\/p>\n
\u4e3a\u53c2\u6570\u8bbe\u7f6e\u9ed8\u8ba4\u503c\u662f\u4e00\u4e2a\u6709\u7528\u7684\u6280\u5de7\uff0c\u53ef\u4ee5\u907f\u514d\u51fd\u6570\u4e2d\u9519\u8bef\u7684\u53c2\u6570\u7c7b\u578b\u3002\u5982\u679c\u53c2\u6570\u6ca1\u6709\u660e\u786e\u63d0\u4f9b\uff0c\u5219\u5c06\u4f7f\u7528\u9ed8\u8ba4\u503c\u3002<\/p>\n
\u4f8b 4:<\/strong><\/p>\n
function sum(int $a = 0, int $b = 0): int {\n    return $a + $b;\n}\n\necho sum(); \/\/ \u8f93\u51fa: 0\necho sum(1, 2); \/\/ \u8f93\u51fa: 3<\/pre>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u4f8b 5: \u9a8c\u8bc1\u548c\u6d88\u6bd2\u7528\u6237\u8f93\u5165<\/strong><\/p>\n
function validate_input(string $name, string $email): void {\n    if (empty($name) || !is_string($name)) {\n        throw new InvalidArgumentException(\"Invalid name\");\n    }\n    if (empty($email) || !is_string($email)) {\n        throw new InvalidArgumentException(\"Invalid email\");\n    }\n\n    \/\/ ... \u5176\u4ed6\u9a8c\u8bc1\u903b\u8f91\n}<\/pre>\n
\u7ed3\u8bba<\/strong><\/p>\n
\u901a\u8fc7\u5728 PHP \u51fd\u6570\u4e2d\u5b9e\u65bd\u7c7b\u578b\u68c0\u67e5\u548c\u6700\u4f73\u5b9e\u8df5\uff0c\u53ef\u4ee5\u663e\u8457\u51cf\u5c11\u9519\u8bef\u53c2\u6570\u7c7b\u578b\u7684\u98ce\u9669\u3002\u9075\u5faa\u672c\u6587\u4e2d\u4ecb\u7ecd\u7684\u6280\u672f\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u6784\u5efa\u66f4\u5065\u58ee\u3001\u66f4\u53ef\u9760\u7684\u4ee3\u7801\u3002<\/p>\n
\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u5982\u4f55\u907f\u514dPHP\u51fd\u6570\u4e2d\u7684\u9519\u8bef\u53c2\u6570\u7c7b\u578b\uff1f\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5982\u4f55\u907f\u514dPHP\u51fd\u6570\u4e2d\u7684\u9519\u8bef\u53c2\u6570\u7c7b\u578b\uff1f \u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60\u6587\u7ae0\u5f88\u6709\u610f\u601d\uff1f\u6709\u610f\u601d\u5c31\u5bf9\u4e86\uff01\u4eca\u5929\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u5982\u4f55\u907f\u514dPHP\u51fd\u6570\u4e2d\u7684\u9519\u8bef\u53c2\u6570\u7c7b\u578b\uff1f\u300b\uff0c\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230\uff0c\u82e5\u662f\u5728\u5b66\u4e60\u4e2d\u5bf9\u5176\u4e2d\u90e8\u5206\u77e5\u8bc6\u70b9\u6709\u7591\u95ee\uff0c\u6216\u8bb8\u770b\u4e86\u672c\u6587\u5c31\u80fd\u5e2e\u5230\u4f60\uff01 PHP \u4e2d\u907f\u514d\u9519\u8bef\u53c2\u6570\u7c7b\u578b\u7684 5 \u4e2a\u65b9\u6cd5\uff1a\u542f\u7528\u4e25\u683c\u7c7b\u578b\u68c0\u67e5 (declare(strict_types=1);)\u4f7f\u7528\u7c7b\u578b\u63d0\u793a\u6807\u6ce8\u51fd\u6570\u53c2\u6570\u548c\u8fd4\u56de\u503c\u6839\u636e\u9700\u8981\u8fdb\u884c\u7c7b\u578b\u8f6c\u6362 (settype())\u8bbe\u7f6e\u53c2\u6570\u9ed8\u8ba4\u503c\u9a8c\u8bc1\u548c\u6d88\u6bd2\u7528\u6237\u8f93\u5165 \u5982\u4f55\u907f\u514d PHP \u51fd\u6570\u4e2d\u7684\u9519\u8bef\u53c2\u6570\u7c7b\u578b \u5f15\u8a00 \u5728 PHP \u4e2d\uff0c\u51fd\u6570\u53c2\u6570\u7c7b\u578b\u68c0\u67e5\u5bf9\u4e8e\u907f\u514d\u9519\u8bef\u548c\u786e\u4fdd\u4ee3\u7801\u5065\u58ee\u6027\u81f3\u5173\u91cd\u8981\u3002\u9519\u8bef\u7684\u53c2\u6570\u7c7b\u578b\u4f1a\u5bfc\u81f4\u610f\u5916\u7ed3\u679c\u548c\u96be\u4ee5\u8c03\u8bd5\u7684\u9519\u8bef\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u907f\u514d PHP \u51fd\u6570\u4e2d\u9519\u8bef\u53c2\u6570\u7c7b\u578b\u7684\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u5b9e\u6218\u6848\u4f8b\u4ee5\u4f9b\u7406\u89e3\u3002 \u5f3a\u5236\u53c2\u6570\u7c7b\u578b PHP \u63d0\u4f9b\u4e86 declare(strict_types=1); \u6307\u4ee4\uff0c\u7528\u4e8e\u542f\u7528\u4e25\u683c\u7c7b\u578b\u68c0\u67e5\u3002\u5f53\u542f\u7528\u65f6\uff0c\u51fd\u6570\u5c06\u68c0\u67e5\u53c2\u6570\u7c7b\u578b\uff0c\u5e76\u9488\u5bf9\u4e0d\u5339\u914d\u7684\u7c7b\u578b\u5f15\u53d1\u7c7b\u578b\u9519\u8bef\u3002 \u4f8b 1: declare(strict_types=1); function sum(int $a, int $b): int { return $a + $b; } echo sum(1, “2”); \/\/ TypeError: Argument 2 passed to sum() must be of the type integer, string given […]<\/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-48450","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48450","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=48450"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48450\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=48450"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=48450"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=48450"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}