{"id":47878,"date":"2024-12-02T09:23:25","date_gmt":"2024-12-02T01:23:25","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47878\/"},"modified":"2024-12-02T09:23:25","modified_gmt":"2024-12-02T01:23:25","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8-php-%e5%87%bd%e6%95%b0%e8%b0%83%e7%94%a8%e5%85%b7%e6%9c%89%e4%b8%8d%e5%90%8c%e5%8f%82%e6%95%b0%e7%b1%bb%e5%9e%8b%e7%9a%84%e5%a4%96%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47878\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528 PHP \u51fd\u6570\u8c03\u7528\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u5916\u51fd\u6570"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5982\u4f55\u4f7f\u7528 PHP \u51fd\u6570\u8c03\u7528\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u5916\u51fd\u6570<\/h1>\n<p>\u672c\u7bc7\u6587\u7ae0\u7ed9\u5927\u5bb6\u5206\u4eab\u300a\u5982\u4f55\u4f7f\u7528 PHP \u51fd\u6570\u8c03\u7528\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u5916\u51fd\u6570\u300b\uff0c\u8986\u76d6\u4e86\u6587\u7ae0\u7684\u5e38\u89c1\u57fa\u7840\u77e5\u8bc6\uff0c\u5176\u5b9e\u4e00\u4e2a\u8bed\u8a00\u7684\u5168\u90e8\u77e5\u8bc6\u70b9\u4e00\u7bc7\u6587\u7ae0\u662f\u4e0d\u53ef\u80fd\u8bf4\u5b8c\u7684\uff0c\u4f46\u5e0c\u671b\u901a\u8fc7\u8fd9\u4e9b\u95ee\u9898\uff0c\u8ba9\u8bfb\u8005\u5bf9\u81ea\u5df1\u7684\u638c\u63e1\u7a0b\u5ea6\u6709\u4e00\u5b9a\u7684\u8ba4\u8bc6(B \u6570)\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u66f4\u597d\u7684\u638c\u63e1\u5b83\u3002<\/p>\n<p>PHP \u5141\u8bb8\u901a\u8fc7 declare \u51fd\u6570\u8c03\u7528\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u5916\u90e8\u51fd\u6570\u3002\u53c2\u6570\u7c7b\u578b\u5305\u62ec\u5e03\u5c14\u503c\u3001\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u5b57\u7b26\u4e32\u3001\u6570\u7ec4\u3001\u5bf9\u8c61\u548c\u53ef\u8c03\u7528\u5bf9\u8c61\u3002\u58f0\u660e\u53c2\u6570\u7c7b\u578b\u8bed\u6cd5\u4e3a declare(type=&#8221;param_type&#8221;, &#8230;, type)\uff0c\u51fd\u6570\u8c03\u7528\u65f6\u5e94\u4fdd\u6301\u7c7b\u578b\u987a\u5e8f\u4e0e\u58f0\u660e\u4e00\u81f4\u3002PHP 8.0 \u53ca\u4ee5\u4e0a\u7248\u672c\u652f\u6301\u7c7b\u578b\u63a8\u65ad\uff0c\u65e0\u9700\u4f7f\u7528 declare \u51fd\u6570\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729941281671ccf21a3b2d.jpg\" class=\"aligncenter\" title=\"\u5982\u4f55\u4f7f\u7528 PHP \u51fd\u6570\u8c03\u7528\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u5916\u51fd\u6570\u63d2\u56fe\" alt=\"\u5982\u4f55\u4f7f\u7528 PHP \u51fd\u6570\u8c03\u7528\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u5916\u51fd\u6570\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 PHP \u51fd\u6570\u8c03\u7528\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u5916\u51fd\u6570<\/strong><\/p>\n<p>PHP \u5141\u8bb8\u60a8\u8c03\u7528\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u5916\u51fd\u6570\uff0c\u8fd9\u53ef\u4ee5\u6269\u5c55\u60a8\u7684\u7f16\u7a0b\u80fd\u529b\u3002\u8981\u505a\u5230\u8fd9\u4e00\u70b9\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 <code>declare<\/code> \u51fd\u6570\u58f0\u660e\u5916\u90e8\u51fd\u6570\u5e76\u6307\u5b9a\u5176\u53c2\u6570\u7c7b\u578b\u3002<\/p>\n<p><strong>\u8bed\u6cd5\uff1a<\/strong><\/p>\n<pre>declare(type=\"param_type\", ..., type);\nfunction_name(typed_arg, ..., typed_arg);<\/pre>\n<p><strong>\u53c2\u6570\u7c7b\u578b\uff1a<\/strong><\/p>\n<ul>\n<li><strong>bool<\/strong>: \u5e03\u5c14\u503c<\/li>\n<li><strong>int<\/strong>: \u6574\u6570<\/li>\n<li><strong>float<\/strong>: \u6d6e\u70b9\u6570<\/li>\n<li><strong>string<\/strong>: \u5b57\u7b26\u4e32<\/li>\n<li><strong>array<\/strong>: \u6570\u7ec4<\/li>\n<li><strong>object<\/strong>: \u5bf9\u8c61<\/li>\n<li><strong>callable<\/strong>: \u53ef\u8c03\u7528\u5bf9\u8c61<\/li>\n<\/ul>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a<\/strong><\/p>\n<p>\u8003\u8651\u6211\u4eec\u6709\u4e00\u4e2a\u51fd\u6570 <code>sum()<\/code>:<\/p>\n<pre>function sum($a, $b) {\n  return $a + $b;\n}<\/pre>\n<p>\u73b0\u5728\uff0c\u5047\u8bbe\u6211\u4eec\u9700\u8981\u5728\u4e4b\u540e\u6269\u5c55\u8fd9\u4e2a\u51fd\u6570\u4ee5\u652f\u6301\u66f4\u590d\u6742\u7684\u53c2\u6570\u7c7b\u578b\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 <code>declare<\/code> \u51fd\u6570\u6765\u8fd9\u6837\u505a\uff1a<\/p>\n<pre>declare(type=\"int, int\");\nfunction sum($a, $b) {\n  \/\/ ...\n}<\/pre>\n<p>\u8fd9\u58f0\u660e\u4e86 <code>sum()<\/code> \u51fd\u6570\u63a5\u53d7\u4e24\u4e2a\u6574\u578b\u53c2\u6570\uff0c\u5e76\u5c06\u4ea7\u751f\u4e00\u4e2a\u6574\u578b\u7ed3\u679c\u3002\u5982\u679c\u6211\u4eec\u5c1d\u8bd5\u7528\u5176\u4ed6\u7c7b\u578b\u7684\u503c\u8c03\u7528\u6b64\u51fd\u6570\uff0cPHP \u4f1a\u4ea7\u751f\u4e00\u4e2a\u9519\u8bef\u3002<\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>\u60a8\u53ef\u4ee5\u4f7f\u7528\u9017\u53f7 (<code>,<\/code>) \u5206\u9694\u591a\u4e2a\u53c2\u6570\u7c7b\u578b\u3002<\/li>\n<li>\u53c2\u6570\u7c7b\u578b\u7684\u987a\u5e8f\u5fc5\u987b\u4e0e\u51fd\u6570\u53c2\u6570\u7684\u987a\u5e8f\u5339\u914d\u3002<\/li>\n<li>PHP 8.0 \u53ca\u66f4\u9ad8\u7248\u672c\u5141\u8bb8\u60a8\u4f7f\u7528\u7c7b\u578b\u63a8\u65ad\uff0c\u65e0\u9700\u4f7f\u7528 <code>declare<\/code> \u51fd\u6570\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u4f7f\u7528 <code>declare<\/code> \u51fd\u6570\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u5730\u521b\u5efa\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u53ef\u91cd\u7528\u51fd\u6570\uff0c\u4ece\u800c\u63d0\u9ad8\u60a8\u7684 PHP \u4ee3\u7801\u7684\u53ef\u6269\u5c55\u6027\u3002<\/p>\n<p>\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300a\u5982\u4f55\u4f7f\u7528 PHP \u51fd\u6570\u8c03\u7528\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u5916\u51fd\u6570\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8ephp,\u5916\u51fd\u6570\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528 PHP \u51fd\u6570\u8c03\u7528\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u5916\u51fd\u6570 \u672c\u7bc7\u6587\u7ae0\u7ed9\u5927\u5bb6\u5206\u4eab\u300a\u5982\u4f55\u4f7f\u7528 PHP \u51fd\u6570\u8c03\u7528\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u5916\u51fd\u6570\u300b\uff0c\u8986\u76d6\u4e86\u6587\u7ae0\u7684\u5e38\u89c1\u57fa\u7840\u77e5\u8bc6\uff0c\u5176\u5b9e\u4e00\u4e2a\u8bed\u8a00\u7684\u5168\u90e8\u77e5\u8bc6\u70b9\u4e00\u7bc7\u6587\u7ae0\u662f\u4e0d\u53ef\u80fd\u8bf4\u5b8c\u7684\uff0c\u4f46\u5e0c\u671b\u901a\u8fc7\u8fd9\u4e9b\u95ee\u9898\uff0c\u8ba9\u8bfb\u8005\u5bf9\u81ea\u5df1\u7684\u638c\u63e1\u7a0b\u5ea6\u6709\u4e00\u5b9a\u7684\u8ba4\u8bc6(B \u6570)\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u66f4\u597d\u7684\u638c\u63e1\u5b83\u3002 PHP \u5141\u8bb8\u901a\u8fc7 declare \u51fd\u6570\u8c03\u7528\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u5916\u90e8\u51fd\u6570\u3002\u53c2\u6570\u7c7b\u578b\u5305\u62ec\u5e03\u5c14\u503c\u3001\u6574\u6570\u3001\u6d6e\u70b9\u6570\u3001\u5b57\u7b26\u4e32\u3001\u6570\u7ec4\u3001\u5bf9\u8c61\u548c\u53ef\u8c03\u7528\u5bf9\u8c61\u3002\u58f0\u660e\u53c2\u6570\u7c7b\u578b\u8bed\u6cd5\u4e3a declare(type=&#8221;param_type&#8221;, &#8230;, type)\uff0c\u51fd\u6570\u8c03\u7528\u65f6\u5e94\u4fdd\u6301\u7c7b\u578b\u987a\u5e8f\u4e0e\u58f0\u660e\u4e00\u81f4\u3002PHP 8.0 \u53ca\u4ee5\u4e0a\u7248\u672c\u652f\u6301\u7c7b\u578b\u63a8\u65ad\uff0c\u65e0\u9700\u4f7f\u7528 declare \u51fd\u6570\u3002 \u5982\u4f55\u4f7f\u7528 PHP \u51fd\u6570\u8c03\u7528\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u5916\u51fd\u6570 PHP \u5141\u8bb8\u60a8\u8c03\u7528\u5177\u6709\u4e0d\u540c\u53c2\u6570\u7c7b\u578b\u7684\u5916\u51fd\u6570\uff0c\u8fd9\u53ef\u4ee5\u6269\u5c55\u60a8\u7684\u7f16\u7a0b\u80fd\u529b\u3002\u8981\u505a\u5230\u8fd9\u4e00\u70b9\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 declare \u51fd\u6570\u58f0\u660e\u5916\u90e8\u51fd\u6570\u5e76\u6307\u5b9a\u5176\u53c2\u6570\u7c7b\u578b\u3002 \u8bed\u6cd5\uff1a declare(type=&#8221;param_type&#8221;, &#8230;, type); function_name(typed_arg, &#8230;, typed_arg); \u53c2\u6570\u7c7b\u578b\uff1a bool: \u5e03\u5c14\u503c int: \u6574\u6570 float: \u6d6e\u70b9\u6570 string: \u5b57\u7b26\u4e32 array: \u6570\u7ec4 object: \u5bf9\u8c61 callable: \u53ef\u8c03\u7528\u5bf9\u8c61 \u5b9e\u6218\u6848\u4f8b\uff1a \u8003\u8651\u6211\u4eec\u6709\u4e00\u4e2a\u51fd\u6570 sum(): function sum($a, $b) { return [&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-47878","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47878","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=47878"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47878\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47878"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47878"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}