{"id":47876,"date":"2024-12-02T17:47:51","date_gmt":"2024-12-02T09:47:51","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47876\/"},"modified":"2024-12-02T17:47:51","modified_gmt":"2024-12-02T09:47:51","slug":"php-%e5%87%bd%e6%95%b0%e5%8f%82%e6%95%b0%e7%bb%91%e5%ae%9a%e4%b8%ad%e7%b1%bb%e5%9e%8b%e7%9a%84%e6%a3%80%e6%9f%a5%e5%92%8c%e8%bd%ac%e6%8d%a2%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47876\/","title":{"rendered":"PHP \u51fd\u6570\u53c2\u6570\u7ed1\u5b9a\u4e2d\u7c7b\u578b\u7684\u68c0\u67e5\u548c\u8f6c\u6362\uff1f"},"content":{"rendered":"

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

PHP \u51fd\u6570\u53c2\u6570\u7ed1\u5b9a\u4e2d\u7c7b\u578b\u7684\u68c0\u67e5\u548c\u8f6c\u6362\uff1f<\/h1>\n

\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587\u300aPHP \u51fd\u6570\u53c2\u6570\u7ed1\u5b9a\u4e2d\u7c7b\u578b\u7684\u68c0\u67e5\u548c\u8f6c\u6362\uff1f\u300b<\/span>\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6587\u7ae0<\/span>\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591a\u6587\u7ae0<\/span>\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~<\/p>\n

\u5728 PHP \u51fd\u6570\u53c2\u6570\u7ed1\u5b9a\u4e2d\uff0c\u7c7b\u578b\u68c0\u67e5\u5141\u8bb8\u6307\u5b9a\u53c2\u6570\u7c7b\u578b\uff0c\u89e6\u53d1\u7c7b\u578b\u9519\u8bef\u5f02\u5e38\uff1b\u7c7b\u578b\u8f6c\u6362\u5c06\u4e00\u79cd\u7c7b\u578b\u8f6c\u6362\u4e3a\u53e6\u4e00\u79cd\u7c7b\u578b\uff0c\u901a\u8fc7 settype() \u6216\u8fd0\u7b97\u7b26\u5b9e\u73b0\uff1b\u7c7b\u578b\u5f3a\u5236\u8f6c\u6362\u5c06\u4e00\u79cd\u7c7b\u578b\u5f3a\u5236\u8f6c\u6362\u4e3a\u53e6\u4e00\u79cd\u7c7b\u578b\uff0c\u4e0d\u8fdb\u884c\u68c0\u67e5\u3002\u5728\u5b9e\u8df5\u4e2d\uff0c\u53ef\u901a\u8fc7\u7c7b\u578b\u68c0\u67e5\u786e\u4fdd\u6b63\u786e\u7684\u53c2\u6570\u7c7b\u578b\uff0c\u907f\u514d\u5f02\u5e38\u3002<\/p>\n

\"PHP<\/p>\n

PHP \u51fd\u6570\u53c2\u6570\u7ed1\u5b9a\u4e2d\u7684\u7c7b\u578b\u68c0\u67e5\u548c\u8f6c\u6362<\/strong><\/p>\n

\u5728 PHP \u4e2d\uff0c\u51fd\u6570\u53c2\u6570\u7ed1\u5b9a\u5141\u8bb8\u60a8\u6307\u5b9a\u51fd\u6570\u53c2\u6570\u7684\u7c7b\u578b\uff0c\u4ece\u800c\u589e\u5f3a\u5b89\u5168\u6027\u5e76\u6539\u8fdb\u53ef\u8bfb\u6027\u3002\u4f46\u662f\uff0c\u5728\u4f7f\u7528\u7c7b\u578b\u68c0\u67e5\u65f6\uff0c\u60a8\u9700\u8981\u6ce8\u610f\u7c7b\u578b\u8f6c\u6362\u548c\u7c7b\u578b\u5f3a\u5236\u8f6c\u6362\u4e4b\u95f4\u7684\u533a\u522b\u3002<\/p>\n

\u7c7b\u578b\u68c0\u67e5<\/strong><\/p>\n

\u7c7b\u578b\u68c0\u67e5\u5141\u8bb8\u60a8\u6307\u5b9a\u51fd\u6570\u53c2\u6570\u7684\u671f\u671b\u7c7b\u578b\uff0c\u4f8b\u5982\uff1a<\/p>\n

function add(int $a, int $b) {\n}<\/pre>\n
\u8fd9\u544a\u8bc9 PHP \u7f16\u8bd1\u5668\uff0c$a<\/code> \u548c $b<\/code> \u5e94\u8be5\u662f\u4e0d\u5e26\u5c0f\u6570\u70b9\u7684\u6574\u6570\u3002\u5982\u679c\u4f20\u9012\u7684\u662f\u5176\u4ed6\u7c7b\u578b\u7684\u53c2\u6570\uff0c\u5c06\u89e6\u53d1 TypeError \u5f02\u5e38\u3002<\/p>\n
\u7c7b\u578b\u8f6c\u6362<\/strong><\/p>\n
\u7c7b\u578b\u8f6c\u6362\u7528\u4e8e\u5c06\u4e00\u79cd\u6570\u636e\u7c7b\u578b\u8f6c\u6362\u4e3a\u53e6\u4e00\u79cd\u6570\u636e\u7c7b\u578b\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 settype()<\/code> \u51fd\u6570\u6216\u7c7b\u578b\u8f6c\u6362\u8fd0\u7b97\u7b26\uff08\u4f8b\u5982\u5f3a\u5236\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32 (string) $value<\/code>\uff09\u6765\u5b8c\u6210\u3002<\/p>\n
function add(string $a, string $b) {\n    $a = (int) $a;\n    $b = (int) $b;\n    return $a + $b;\n}<\/pre>\n
\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c$a<\/code> \u548c $b<\/code> \u88ab\u8f6c\u6362\u4e3a\u6574\u6570\uff0c\u4ee5\u4fbf\u53ef\u4ee5\u8fdb\u884c\u52a0\u6cd5\u8fd0\u7b97\u3002<\/p>\n
\u7c7b\u578b\u5f3a\u5236\u8f6c\u6362<\/strong><\/p>\n
\u7c7b\u578b\u5f3a\u5236\u8f6c\u6362\u5c06\u4e00\u79cd\u6570\u636e\u7c7b\u578b\u5f3a\u5236\u8f6c\u6362\u4e3a\u53e6\u4e00\u79cd\u6570\u636e\u7c7b\u578b\uff0c\u800c\u4e0d\u4f1a\u8fdb\u884c\u4efb\u4f55\u7c7b\u578b\u68c0\u67e5\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 (type) $value<\/code> \u8bed\u6cd5\u6765\u5b8c\u6210\u3002<\/p>\n
function add($a, $b) {\n    return (int) $a + (int) $b;\n}<\/pre>\n
\u4e0e\u4e0a\u9762\u7684\u793a\u4f8b\u4e0d\u540c\uff0c\u8fd9\u4e2a\u51fd\u6570\u4e0d\u68c0\u67e5 $a<\/code> \u548c $b<\/code> \u7684\u7c7b\u578b\u3002 <\/p>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u8003\u8651\u4ee5\u4e0b\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u63a5\u53d7\u751f\u65e5\u5b57\u7b26\u4e32\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a DateTime \u5bf9\u8c61\uff1a<\/p>\n
function getBirthday(string $birthday) {\n    $date = DateTime::createFromFormat('Y-m-d', $birthday);\n    if (! $date) {\n        throw new InvalidArgumentException('Invalid birthday format');\n    }\n    return $date;\n}<\/pre>\n
\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u6267\u884c\u7c7b\u578b\u68c0\u67e5\u4ee5\u786e\u4fdd $birthday<\/code> \u662f\u5b57\u7b26\u4e32\uff0c\u7136\u540e\u4f7f\u7528 DateTime::createFromFormat()<\/code> \u51fd\u6570\u5c1d\u8bd5\u4ece\u5b57\u7b26\u4e32\u521b\u5efa DateTime \u5bf9\u8c61\u3002\u5982\u679c\u65e0\u6cd5\u521b\u5efa\u5bf9\u8c61\uff0c\u6211\u4eec\u5c06\u5f15\u53d1\u5f02\u5e38\u3002<\/p>\n
\u4eca\u5929\u5173\u4e8e\u300aPHP \u51fd\u6570\u53c2\u6570\u7ed1\u5b9a\u4e2d\u7c7b\u578b\u7684\u68c0\u67e5\u548c\u8f6c\u6362\uff1f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8ephp,\u53c2\u6570\u7c7b\u578b\u68c0\u67e5\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
PHP \u51fd\u6570\u53c2\u6570\u7ed1\u5b9a\u4e2d\u7c7b\u578b\u7684\u68c0\u67e5\u548c\u8f6c\u6362\uff1f \u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587\u300aPHP \u51fd\u6570\u53c2\u6570\u7ed1\u5b9a\u4e2d\u7c7b\u578b\u7684\u68c0\u67e5\u548c\u8f6c\u6362\uff1f\u300b\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u6587\u7ae0\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591a\u6587\u7ae0\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~ \u5728 PHP \u51fd\u6570\u53c2\u6570\u7ed1\u5b9a\u4e2d\uff0c\u7c7b\u578b\u68c0\u67e5\u5141\u8bb8\u6307\u5b9a\u53c2\u6570\u7c7b\u578b\uff0c\u89e6\u53d1\u7c7b\u578b\u9519\u8bef\u5f02\u5e38\uff1b\u7c7b\u578b\u8f6c\u6362\u5c06\u4e00\u79cd\u7c7b\u578b\u8f6c\u6362\u4e3a\u53e6\u4e00\u79cd\u7c7b\u578b\uff0c\u901a\u8fc7 settype() \u6216\u8fd0\u7b97\u7b26\u5b9e\u73b0\uff1b\u7c7b\u578b\u5f3a\u5236\u8f6c\u6362\u5c06\u4e00\u79cd\u7c7b\u578b\u5f3a\u5236\u8f6c\u6362\u4e3a\u53e6\u4e00\u79cd\u7c7b\u578b\uff0c\u4e0d\u8fdb\u884c\u68c0\u67e5\u3002\u5728\u5b9e\u8df5\u4e2d\uff0c\u53ef\u901a\u8fc7\u7c7b\u578b\u68c0\u67e5\u786e\u4fdd\u6b63\u786e\u7684\u53c2\u6570\u7c7b\u578b\uff0c\u907f\u514d\u5f02\u5e38\u3002 PHP \u51fd\u6570\u53c2\u6570\u7ed1\u5b9a\u4e2d\u7684\u7c7b\u578b\u68c0\u67e5\u548c\u8f6c\u6362 \u5728 PHP \u4e2d\uff0c\u51fd\u6570\u53c2\u6570\u7ed1\u5b9a\u5141\u8bb8\u60a8\u6307\u5b9a\u51fd\u6570\u53c2\u6570\u7684\u7c7b\u578b\uff0c\u4ece\u800c\u589e\u5f3a\u5b89\u5168\u6027\u5e76\u6539\u8fdb\u53ef\u8bfb\u6027\u3002\u4f46\u662f\uff0c\u5728\u4f7f\u7528\u7c7b\u578b\u68c0\u67e5\u65f6\uff0c\u60a8\u9700\u8981\u6ce8\u610f\u7c7b\u578b\u8f6c\u6362\u548c\u7c7b\u578b\u5f3a\u5236\u8f6c\u6362\u4e4b\u95f4\u7684\u533a\u522b\u3002 \u7c7b\u578b\u68c0\u67e5 \u7c7b\u578b\u68c0\u67e5\u5141\u8bb8\u60a8\u6307\u5b9a\u51fd\u6570\u53c2\u6570\u7684\u671f\u671b\u7c7b\u578b\uff0c\u4f8b\u5982\uff1a function add(int $a, int $b) { } \u8fd9\u544a\u8bc9 PHP \u7f16\u8bd1\u5668\uff0c$a \u548c $b \u5e94\u8be5\u662f\u4e0d\u5e26\u5c0f\u6570\u70b9\u7684\u6574\u6570\u3002\u5982\u679c\u4f20\u9012\u7684\u662f\u5176\u4ed6\u7c7b\u578b\u7684\u53c2\u6570\uff0c\u5c06\u89e6\u53d1 TypeError \u5f02\u5e38\u3002 \u7c7b\u578b\u8f6c\u6362 \u7c7b\u578b\u8f6c\u6362\u7528\u4e8e\u5c06\u4e00\u79cd\u6570\u636e\u7c7b\u578b\u8f6c\u6362\u4e3a\u53e6\u4e00\u79cd\u6570\u636e\u7c7b\u578b\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 settype() \u51fd\u6570\u6216\u7c7b\u578b\u8f6c\u6362\u8fd0\u7b97\u7b26\uff08\u4f8b\u5982\u5f3a\u5236\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32 (string) $value\uff09\u6765\u5b8c\u6210\u3002 function add(string $a, string $b) { $a = (int) $a; $b = (int) $b; return $a + $b; […]<\/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-47876","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47876","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=47876"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47876\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47876"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47876"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}