{"id":47437,"date":"2024-12-02T14:23:06","date_gmt":"2024-12-02T06:23:06","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47437\/"},"modified":"2024-12-02T14:23:06","modified_gmt":"2024-12-02T06:23:06","slug":"php%e5%87%bd%e6%95%b0%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e5%8f%af%e5%8f%98%e5%8f%82%e6%95%b0%e5%88%97%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47437\/","title":{"rendered":"PHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u5217\u8868"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>PHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u5217\u8868<\/h1>\n<p>\u5927\u5bb6\u597d\uff0c\u4eca\u5929\u672c\u4eba\u7ed9\u5927\u5bb6\u5e26\u6765\u6587\u7ae0<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aPHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u5217\u8868\u300b<\/span>\uff0c\u6587\u4e2d\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span><\/span>\uff0c\u5982\u679c\u4f60\u5bf9<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u90a3\u5c31\u8bf7\u5404\u4f4d\u670b\u53cb\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427~\u5e0c\u671b\u80fd\u771f\u6b63\u5e2e\u5230\u4f60\u4eec\uff0c\u8c22\u8c22\uff01<\/p>\n<p>PHP \u51fd\u6570\u652f\u6301\u53ef\u53d8\u53c2\u6570\u5217\u8868\uff0c\u5141\u8bb8\u51fd\u6570\u63a5\u6536\u6570\u91cf\u4e0d\u5b9a\u4e14\u7c7b\u578b\u672a\u77e5\u7684\u53c2\u6570\uff0c\u7528\u4e8e\u521b\u5efa\u63a5\u53d7\u4efb\u610f\u8f93\u5165\u503c\u7684\u51fd\u6570\u6216\u8fd4\u56de\u4efb\u610f\u6570\u91cf\u9644\u52a0\u503c\u7684\u51fd\u6570\u3002\u8bed\u6cd5\u4e3a\uff1afunction func_name(&#8230;$arg_name): ?\uff0c\u5176\u4e2d &#8230;$arg_name \u4e3a\u7279\u6b8a\u8bed\u6cd5\uff0c? \u8868\u793a\u53c2\u6570\u7c7b\u578b\u672a\u77e5\u3002\u793a\u4f8b\u51fd\u6570 sum \u53ef\u6c42\u4efb\u610f\u6570\u91cf\u53c2\u6570\u7684\u548c\u3002\u53ef\u53d8\u53c2\u6570\u5217\u8868\u8fd8\u53ef\u7528\u4e8e\u6839\u636e\u7279\u5b9a\u6761\u4ef6\u8fd4\u56de\u4e0d\u540c\u7ed3\u679c\uff0c\u5982\u51fd\u6570 get_result \u6839\u636e\u7b2c\u4e00\u4e2a\u53c2\u6570\u7684\u7c7b\u578b\u8fd4\u56de\u6574\u6570\u3001\u6d6e\u70b9\u6570\u6216\u5b57\u7b26\u4e32\u3002\u53ef\u53d8\u53c2\u6570\u5217\u8868\u53c2\u6570\u53ef\u4ee5\u662f\u4efb\u4f55\u7c7b\u578b\uff0c\u5305\u62ec\u6570\u7ec4\uff0c\u53ef\u4e0e\u5176\u4ed6\u53c2\u6570\u7c7b\u578b\u4e00\u8d77\u4f7f\u7528\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241026\/1729918120671c74a8d0ff5.jpg\" class=\"aligncenter\" title=\"PHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u5217\u8868\u63d2\u56fe\" alt=\"PHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u5217\u8868\u63d2\u56fe\" \/><\/p>\n<p><strong>PHP \u51fd\u6570\u7684\u53ef\u53d8\u53c2\u6570\u5217\u8868<\/strong><\/p>\n<p>\u53ef\u53d8\u53c2\u6570\u5217\u8868\u5141\u8bb8\u51fd\u6570\u63a5\u6536\u6570\u91cf\u4e0d\u5b9a\u4e14\u7c7b\u578b\u672a\u77e5\u7684\u53c2\u6570\u3002\u5b83\u5728\u4ee5\u4e0b\u573a\u666f\u4e2d\u5f88\u6709\u7528\uff1a<\/p>\n<ul>\n<li>\u5f53\u8981\u521b\u5efa\u63a5\u53d7\u4efb\u610f\u6570\u91cf\u8f93\u5165\u503c\u7684\u51fd\u6570\u65f6<\/li>\n<li>\u5f53\u8981\u5c06\u51fd\u6570\u7ed3\u679c\u4e0e\u4efb\u610f\u6570\u91cf\u7684\u9644\u52a0\u503c\u4e00\u8d77\u8fd4\u56de\u65f6<\/li>\n<\/ul>\n<p><strong>\u8bed\u6cd5<\/strong><\/p>\n<p>\u8981\u5728 PHP \u51fd\u6570\u4e2d\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u5217\u8868\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n<pre>function func_name(...$arg_name): ?<\/pre>\n<p>\u5176\u4e2d\uff1a<\/p>\n<ul>\n<li><code>...$arg_name<\/code>\uff1a\u63a5\u53d7\u53ef\u53d8\u6570\u91cf\u53c2\u6570\u7684\u7279\u6b8a\u8bed\u6cd5<\/li>\n<li><code>?<\/code>\uff1a\u53ef\u53d8\u53c2\u6570\u5217\u8868\u7684\u7c7b\u578b\uff0c\u8868\u793a\u53c2\u6570\u7c7b\u578b\u672a\u77e5<\/li>\n<\/ul>\n<p><strong>\u7528\u6cd5<\/strong><\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u5217\u8868\u7684\u793a\u4f8b\u51fd\u6570\uff1a<\/p>\n<pre>function sum(...$numbers): int\n{\n    $total = 0;\n    foreach ($numbers as $number) {\n        $total += $number;\n    }\n    return $total;\n}\n\n$result = sum(1, 2, 3, 4, 5); \/\/ \u7ed3\u679c\uff1a15<\/pre>\n<p><strong>\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n<p>\u8003\u8651\u4e00\u4e2a\u9700\u8981\u6839\u636e\u4e0d\u540c\u6761\u4ef6\u8fd4\u56de\u4e0d\u540c\u7ed3\u679c\u7684\u51fd\u6570\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u51fd\u6570\uff1a<\/p>\n<pre>function get_result(...$args): int|float|string\n{\n    $type = gettype($args[0]);\n    switch ($type) {\n        case 'integer':\n            return $args[0] + $args[1];\n        case 'double':\n            return $args[2] - $args[3];\n        case 'string':\n            return strtoupper($args[0]);\n        default:\n            return null;\n    }\n}\n\n$result = get_result(1, 2, 3.14, 2.71, 'hello');<\/pre>\n<p>\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c<code>get_result<\/code> \u51fd\u6570\u6839\u636e\u7b2c\u4e00\u4e2a\u53c2\u6570\u7684\u7c7b\u578b\u8fd4\u56de\u4e0d\u540c\u7684\u7ed3\u679c\uff1a<\/p>\n<ul>\n<li>\u5982\u679c\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u6574\u6570\uff0c\u8fd4\u56de\u524d\u4e24\u4e2a\u53c2\u6570\u7684\u548c<\/li>\n<li>\u5982\u679c\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u6d6e\u70b9\u6570\uff0c\u8fd4\u56de\u7b2c\u4e8c\u4e2a\u548c\u7b2c\u4e09\u4e2a\u53c2\u6570\u7684\u5dee<\/li>\n<li>\u5982\u679c\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u5b57\u7b26\u4e32\uff0c\u8fd4\u56de\u7b2c\u4e00\u4e2a\u53c2\u6570\u7684\u5927\u5199\u5f62\u5f0f<\/li>\n<\/ul>\n<p><strong>\u6ce8\u610f<\/strong><\/p>\n<ul>\n<li>\u53ef\u53d8\u53c2\u6570\u5217\u8868\u53ea\u80fd\u51fa\u73b0\u5728\u6700\u53f3\u8fb9\u7684\u53c2\u6570\u4f4d\u7f6e<\/li>\n<li>\u4f20\u9012\u7ed9\u53ef\u53d8\u53c2\u6570\u5217\u8868\u7684\u53c2\u6570\u53ef\u4ee5\u662f\u4efb\u4f55\u7c7b\u578b\uff0c\u5305\u62ec\u6570\u7ec4<\/li>\n<li>\u53ef\u53d8\u53c2\u6570\u5217\u8868\u53ef\u4ee5\u4e0e\u5176\u4ed6\u53c2\u6570\u7c7b\u578b\u4e00\u8d77\u4f7f\u7528<\/li>\n<li>\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u5217\u8868\u65f6\u8981\u5c0f\u5fc3\uff0c\u56e0\u4e3a\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4ee3\u7801\u6df7\u4e71\uff0c\u5e76\u4e14\u96be\u4ee5\u7ef4\u62a4<\/li>\n<\/ul>\n<p>\u4eca\u5929\u5173\u4e8e\u300aPHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u5217\u8868\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>PHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u5217\u8868 \u5927\u5bb6\u597d\uff0c\u4eca\u5929\u672c\u4eba\u7ed9\u5927\u5bb6\u5e26\u6765\u6587\u7ae0\u300aPHP\u51fd\u6570\u5982\u4f55\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u5217\u8868\u300b\uff0c\u6587\u4e2d\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230\uff0c\u5982\u679c\u4f60\u5bf9\u6587\u7ae0\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u90a3\u5c31\u8bf7\u5404\u4f4d\u670b\u53cb\u7ee7\u7eed\u770b\u4e0b\u53bb\u5427~\u5e0c\u671b\u80fd\u771f\u6b63\u5e2e\u5230\u4f60\u4eec\uff0c\u8c22\u8c22\uff01 PHP \u51fd\u6570\u652f\u6301\u53ef\u53d8\u53c2\u6570\u5217\u8868\uff0c\u5141\u8bb8\u51fd\u6570\u63a5\u6536\u6570\u91cf\u4e0d\u5b9a\u4e14\u7c7b\u578b\u672a\u77e5\u7684\u53c2\u6570\uff0c\u7528\u4e8e\u521b\u5efa\u63a5\u53d7\u4efb\u610f\u8f93\u5165\u503c\u7684\u51fd\u6570\u6216\u8fd4\u56de\u4efb\u610f\u6570\u91cf\u9644\u52a0\u503c\u7684\u51fd\u6570\u3002\u8bed\u6cd5\u4e3a\uff1afunction func_name(&#8230;$arg_name): ?\uff0c\u5176\u4e2d &#8230;$arg_name \u4e3a\u7279\u6b8a\u8bed\u6cd5\uff0c? \u8868\u793a\u53c2\u6570\u7c7b\u578b\u672a\u77e5\u3002\u793a\u4f8b\u51fd\u6570 sum \u53ef\u6c42\u4efb\u610f\u6570\u91cf\u53c2\u6570\u7684\u548c\u3002\u53ef\u53d8\u53c2\u6570\u5217\u8868\u8fd8\u53ef\u7528\u4e8e\u6839\u636e\u7279\u5b9a\u6761\u4ef6\u8fd4\u56de\u4e0d\u540c\u7ed3\u679c\uff0c\u5982\u51fd\u6570 get_result \u6839\u636e\u7b2c\u4e00\u4e2a\u53c2\u6570\u7684\u7c7b\u578b\u8fd4\u56de\u6574\u6570\u3001\u6d6e\u70b9\u6570\u6216\u5b57\u7b26\u4e32\u3002\u53ef\u53d8\u53c2\u6570\u5217\u8868\u53c2\u6570\u53ef\u4ee5\u662f\u4efb\u4f55\u7c7b\u578b\uff0c\u5305\u62ec\u6570\u7ec4\uff0c\u53ef\u4e0e\u5176\u4ed6\u53c2\u6570\u7c7b\u578b\u4e00\u8d77\u4f7f\u7528\u3002 PHP \u51fd\u6570\u7684\u53ef\u53d8\u53c2\u6570\u5217\u8868 \u53ef\u53d8\u53c2\u6570\u5217\u8868\u5141\u8bb8\u51fd\u6570\u63a5\u6536\u6570\u91cf\u4e0d\u5b9a\u4e14\u7c7b\u578b\u672a\u77e5\u7684\u53c2\u6570\u3002\u5b83\u5728\u4ee5\u4e0b\u573a\u666f\u4e2d\u5f88\u6709\u7528\uff1a \u5f53\u8981\u521b\u5efa\u63a5\u53d7\u4efb\u610f\u6570\u91cf\u8f93\u5165\u503c\u7684\u51fd\u6570\u65f6 \u5f53\u8981\u5c06\u51fd\u6570\u7ed3\u679c\u4e0e\u4efb\u610f\u6570\u91cf\u7684\u9644\u52a0\u503c\u4e00\u8d77\u8fd4\u56de\u65f6 \u8bed\u6cd5 \u8981\u5728 PHP \u51fd\u6570\u4e2d\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u5217\u8868\uff0c\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a function func_name(&#8230;$arg_name): ? \u5176\u4e2d\uff1a &#8230;$arg_name\uff1a\u63a5\u53d7\u53ef\u53d8\u6570\u91cf\u53c2\u6570\u7684\u7279\u6b8a\u8bed\u6cd5 ?\uff1a\u53ef\u53d8\u53c2\u6570\u5217\u8868\u7684\u7c7b\u578b\uff0c\u8868\u793a\u53c2\u6570\u7c7b\u578b\u672a\u77e5 \u7528\u6cd5 \u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528\u53ef\u53d8\u53c2\u6570\u5217\u8868\u7684\u793a\u4f8b\u51fd\u6570\uff1a function sum(&#8230;$numbers): int { $total = 0; foreach ($numbers as $number) { $total += $number; } return $total; } $result = sum(1, 2, 3, 4, [&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-47437","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47437","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=47437"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47437\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47437"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47437"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}