{"id":47318,"date":"2024-12-02T13:54:13","date_gmt":"2024-12-02T05:54:13","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47318\/"},"modified":"2024-12-02T13:54:13","modified_gmt":"2024-12-02T05:54:13","slug":"php-%e5%87%bd%e6%95%b0%e4%b8%ad%e5%8f%98%e9%87%8f%e7%b1%bb%e5%9e%8b%e5%a6%82%e4%bd%95%e5%bd%b1%e5%93%8d%e7%bb%93%e6%9e%9c%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47318\/","title":{"rendered":"PHP \u51fd\u6570\u4e2d\u53d8\u91cf\u7c7b\u578b\u5982\u4f55\u5f71\u54cd\u7ed3\u679c\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>PHP \u51fd\u6570\u4e2d\u53d8\u91cf\u7c7b\u578b\u5982\u4f55\u5f71\u54cd\u7ed3\u679c\uff1f<\/h1>\n<p>\u6765\u5230\u7c73\u4e91\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60\u6587\u7ae0\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300aPHP \u51fd\u6570\u4e2d\u53d8\u91cf\u7c7b\u578b\u5982\u4f55\u5f71\u54cd\u7ed3\u679c\uff1f\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n<p>PHP \u51fd\u6570\u4e2d\u53d8\u91cf\u7c7b\u578b\u5bf9\u4e8e\u7ed3\u679c\u81f3\u5173\u91cd\u8981\u3002\u57fa\u672c\u7c7b\u578b\u5305\u62ec\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u5b57\u7b26\u4e32\u548c\u5e03\u5c14\u503c\u3002\u51fd\u6570\u53c2\u6570\u7c7b\u578b\u63d0\u793a\u53ef\u786e\u4fdd\u4f20\u9012\u6b63\u786e\u7684\u6570\u636e\u7c7b\u578b\u3002\u4e25\u683c\u6a21\u5f0f\u5f3a\u5236\u6267\u884c\u7c7b\u578b\u68c0\u67e5\uff0c\u4f20\u9012\u9519\u8bef\u7c7b\u578b\u4f1a\u5f15\u53d1 TypeError\u3002\u9690\u5f0f\u8f6c\u6362\u53ef\u80fd\u5bfc\u81f4\u610f\u5916\u7ed3\u679c\uff0c\u53ef\u901a\u8fc7\u6307\u5b9a\u7c7b\u578b\u63d0\u793a\u907f\u514d\u3002\u7406\u89e3\u51fd\u6570\u4e2d\u53d8\u91cf\u7c7b\u578b\u7684\u884c\u4e3a\u6709\u52a9\u4e8e\u7f16\u5199\u53ef\u9760\u7684\u4ee3\u7801\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729910740671c57d48e00e.jpg\" class=\"aligncenter\" title=\"PHP \u51fd\u6570\u4e2d\u53d8\u91cf\u7c7b\u578b\u5982\u4f55\u5f71\u54cd\u7ed3\u679c\uff1f\u63d2\u56fe\" alt=\"PHP \u51fd\u6570\u4e2d\u53d8\u91cf\u7c7b\u578b\u5982\u4f55\u5f71\u54cd\u7ed3\u679c\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>PHP \u51fd\u6570\u4e2d\u53d8\u91cf\u7c7b\u578b\u5982\u4f55\u5f71\u54cd\u7ed3\u679c<\/strong><\/p>\n<p>\u5728 PHP \u4e2d\uff0c\u53d8\u91cf\u7c7b\u578b\u5bf9\u4e8e\u51fd\u6570\u7684\u884c\u4e3a\u6709\u7740\u81f3\u5173\u91cd\u8981\u7684\u5f71\u54cd\u3002\u4e86\u89e3\u4e0d\u540c\u7c7b\u578b\u4e4b\u95f4\u7684\u533a\u522b\u5bf9\u4e8e\u7f16\u5199\u53ef\u9760\u548c\u9ad8\u6548\u7684\u4ee3\u7801\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<p><strong>\u57fa\u672c\u7c7b\u578b<\/strong><\/p>\n<p>PHP \u4e2d\u7684\u57fa\u672c\u6570\u636e\u7c7b\u578b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u6574\u6570 (int)<\/strong>\uff1a\u6574\u6570\u503c\uff0c\u4f8b\u5982 1234<\/li>\n<li><strong>\u6d6e\u70b9\u6570 (float)<\/strong>\uff1a\u6d6e\u70b9\u503c\uff0c\u4f8b\u5982 3.14<\/li>\n<li><strong>\u5b57\u7b26\u4e32 (string)<\/strong>\uff1a\u6587\u672c\u503c\uff0c\u4f8b\u5982 &#8220;Hello&#8221;<\/li>\n<li><strong>\u5e03\u5c14\u503c (bool)<\/strong>\uff1a\u5e03\u5c14\u503c\uff0c\u8868\u793a true \u6216 false<\/li>\n<\/ul>\n<p><strong>\u51fd\u6570\u53c2\u6570\u7c7b\u578b<\/strong><\/p>\n<p>\u51fd\u6570\u7684\u53c2\u6570\u53ef\u4ee5\u6307\u5b9a\u7c7b\u578b\uff0c\u8fd9\u53ef\u4ee5\u786e\u4fdd\u4f20\u9012\u6b63\u786e\u7684\u6570\u636e\u7c7b\u578b\u3002\u5728\u51fd\u6570\u5934\u90e8\u4f7f\u7528\u7c7b\u578b\u63d0\u793a\uff1a<\/p>\n<pre>function myFunction(int $param1, string $param2): void {}<\/pre>\n<p><strong>\u4e25\u683c\u6a21\u5f0f<\/strong><\/p>\n<p>PHP 8 \u5f15\u5165\u4e86\u4e25\u683c\u6a21\u5f0f\uff0c\u5b83\u5f3a\u5236\u6267\u884c\u51fd\u6570\u53c2\u6570\u7684\u7c7b\u578b\u68c0\u67e5\u3002\u5982\u679c\u4e0d\u4f20\u9012\u9884\u671f\u7c7b\u578b\u7684\u53c2\u6570\uff0c\u5c06\u5f15\u53d1 TypeError\u3002<\/p>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4ee5\u4e0b\u51fd\u6570\uff0c\u5b83\u8ba1\u7b97\u4e24\u4e2a\u6570\u5b57\u7684\u603b\u548c\uff1a<\/p>\n<pre>function sum($a, $b) {\n  return $a + $b;\n}<\/pre>\n<p>\u5982\u679c\u6211\u4eec\u4f20\u9012\u4e00\u4e2a\u5b57\u7b26\u4e32\u4f5c\u4e3a\u53c2\u6570\uff0c\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1f<\/p>\n<pre>$result = sum(\"10\", \"20\"); \/\/ \u7ed3\u679c\uff1a\"1020\"<\/pre>\n<p>\u5b57\u7b26\u4e32\u4f1a\u81ea\u52a8\u8fde\u63a5\u5728\u4e00\u8d77\uff0c\u800c\u4e0d\u662f\u8fdb\u884c\u6570\u5b66\u8fd0\u7b97\u3002\u8fd9\u662f\u56e0\u4e3a PHP \u4e3a\u4e86\u65b9\u4fbf\u8d77\u89c1\uff0c\u5728\u6267\u884c\u8fd0\u7b97\u4e4b\u524d\u9690\u5f0f\u5730\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6570\u5b57\u3002<\/p>\n<p>\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u9690\u5f0f\u8f6c\u6362\uff0c\u6211\u4eec\u53ef\u4ee5\u6307\u5b9a\u51fd\u6570\u53c2\u6570\u7684\u7c7b\u578b\uff1a<\/p>\n<pre>function sum(int $a, int $b) {\n  return $a + $b;\n}<\/pre>\n<p>\u73b0\u5728\uff0c\u5982\u679c\u6211\u4eec\u4f20\u9012\u5b57\u7b26\u4e32\uff0c\u5c06\u89e6\u53d1 TypeError\uff1a<\/p>\n<pre>$result = sum(\"10\", \"20\"); \/\/ TypeError: Argument 1 passed to sum() must be of the type integer, string given<\/pre>\n<p>\u4e86\u89e3\u53d8\u91cf\u7c7b\u578b\u5982\u4f55\u5f71\u54cd PHP \u51fd\u6570\u7684\u884c\u4e3a\u5bf9\u4e8e\u7f16\u5199\u5065\u58ee\u548c\u51c6\u786e\u7684\u4ee3\u7801\u81f3\u5173\u91cd\u8981\u3002\u901a\u8fc7\u4f7f\u7528\u7c7b\u578b\u63d0\u793a\u548c\u4e25\u683c\u6a21\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u786e\u4fdd\u51fd\u6570\u5728\u4f20\u9012\u6b63\u786e\u7684\u6570\u636e\u7c7b\u578b\u65f6\u5de5\u4f5c\u6b63\u5e38\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\u7c73\u4e91\uff01\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP \u51fd\u6570\u4e2d\u53d8\u91cf\u7c7b\u578b\u5982\u4f55\u5f71\u54cd\u7ed3\u679c\uff1f \u6765\u5230\u7c73\u4e91\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60\u6587\u7ae0\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300aPHP \u51fd\u6570\u4e2d\u53d8\u91cf\u7c7b\u578b\u5982\u4f55\u5f71\u54cd\u7ed3\u679c\uff1f\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01 PHP \u51fd\u6570\u4e2d\u53d8\u91cf\u7c7b\u578b\u5bf9\u4e8e\u7ed3\u679c\u81f3\u5173\u91cd\u8981\u3002\u57fa\u672c\u7c7b\u578b\u5305\u62ec\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u5b57\u7b26\u4e32\u548c\u5e03\u5c14\u503c\u3002\u51fd\u6570\u53c2\u6570\u7c7b\u578b\u63d0\u793a\u53ef\u786e\u4fdd\u4f20\u9012\u6b63\u786e\u7684\u6570\u636e\u7c7b\u578b\u3002\u4e25\u683c\u6a21\u5f0f\u5f3a\u5236\u6267\u884c\u7c7b\u578b\u68c0\u67e5\uff0c\u4f20\u9012\u9519\u8bef\u7c7b\u578b\u4f1a\u5f15\u53d1 TypeError\u3002\u9690\u5f0f\u8f6c\u6362\u53ef\u80fd\u5bfc\u81f4\u610f\u5916\u7ed3\u679c\uff0c\u53ef\u901a\u8fc7\u6307\u5b9a\u7c7b\u578b\u63d0\u793a\u907f\u514d\u3002\u7406\u89e3\u51fd\u6570\u4e2d\u53d8\u91cf\u7c7b\u578b\u7684\u884c\u4e3a\u6709\u52a9\u4e8e\u7f16\u5199\u53ef\u9760\u7684\u4ee3\u7801\u3002 PHP \u51fd\u6570\u4e2d\u53d8\u91cf\u7c7b\u578b\u5982\u4f55\u5f71\u54cd\u7ed3\u679c \u5728 PHP \u4e2d\uff0c\u53d8\u91cf\u7c7b\u578b\u5bf9\u4e8e\u51fd\u6570\u7684\u884c\u4e3a\u6709\u7740\u81f3\u5173\u91cd\u8981\u7684\u5f71\u54cd\u3002\u4e86\u89e3\u4e0d\u540c\u7c7b\u578b\u4e4b\u95f4\u7684\u533a\u522b\u5bf9\u4e8e\u7f16\u5199\u53ef\u9760\u548c\u9ad8\u6548\u7684\u4ee3\u7801\u975e\u5e38\u91cd\u8981\u3002 \u57fa\u672c\u7c7b\u578b PHP \u4e2d\u7684\u57fa\u672c\u6570\u636e\u7c7b\u578b\u5305\u62ec\uff1a \u6574\u6570 (int)\uff1a\u6574\u6570\u503c\uff0c\u4f8b\u5982 1234 \u6d6e\u70b9\u6570 (float)\uff1a\u6d6e\u70b9\u503c\uff0c\u4f8b\u5982 3.14 \u5b57\u7b26\u4e32 (string)\uff1a\u6587\u672c\u503c\uff0c\u4f8b\u5982 &#8220;Hello&#8221; \u5e03\u5c14\u503c (bool)\uff1a\u5e03\u5c14\u503c\uff0c\u8868\u793a true \u6216 false \u51fd\u6570\u53c2\u6570\u7c7b\u578b \u51fd\u6570\u7684\u53c2\u6570\u53ef\u4ee5\u6307\u5b9a\u7c7b\u578b\uff0c\u8fd9\u53ef\u4ee5\u786e\u4fdd\u4f20\u9012\u6b63\u786e\u7684\u6570\u636e\u7c7b\u578b\u3002\u5728\u51fd\u6570\u5934\u90e8\u4f7f\u7528\u7c7b\u578b\u63d0\u793a\uff1a function myFunction(int $param1, string $param2): void {} \u4e25\u683c\u6a21\u5f0f PHP 8 \u5f15\u5165\u4e86\u4e25\u683c\u6a21\u5f0f\uff0c\u5b83\u5f3a\u5236\u6267\u884c\u51fd\u6570\u53c2\u6570\u7684\u7c7b\u578b\u68c0\u67e5\u3002\u5982\u679c\u4e0d\u4f20\u9012\u9884\u671f\u7c7b\u578b\u7684\u53c2\u6570\uff0c\u5c06\u5f15\u53d1 TypeError\u3002 \u5b9e\u6218\u6848\u4f8b \u8003\u8651\u4ee5\u4e0b\u51fd\u6570\uff0c\u5b83\u8ba1\u7b97\u4e24\u4e2a\u6570\u5b57\u7684\u603b\u548c\uff1a function sum($a, $b) { return $a + $b; } \u5982\u679c\u6211\u4eec\u4f20\u9012\u4e00\u4e2a\u5b57\u7b26\u4e32\u4f5c\u4e3a\u53c2\u6570\uff0c\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1f [&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-47318","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47318","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=47318"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47318\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47318"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47318"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47318"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}