{"id":46728,"date":"2024-12-02T12:29:38","date_gmt":"2024-12-02T04:29:38","guid":{"rendered":"https:\/\/fwq.ai\/blog\/46728\/"},"modified":"2024-12-02T12:29:38","modified_gmt":"2024-12-02T04:29:38","slug":"php-%e5%87%bd%e6%95%b0%e4%b8%ad%e5%a6%82%e4%bd%95%e8%bf%9b%e8%a1%8c%e5%8f%82%e6%95%b0%e7%bb%91%e5%ae%9a%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/46728\/","title":{"rendered":"PHP \u51fd\u6570\u4e2d\u5982\u4f55\u8fdb\u884c\u53c2\u6570\u7ed1\u5b9a\uff1f"},"content":{"rendered":"

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

PHP \u51fd\u6570\u4e2d\u5982\u4f55\u8fdb\u884c\u53c2\u6570\u7ed1\u5b9a\uff1f<\/h1>\n

\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300aPHP \u51fd\u6570\u4e2d\u5982\u4f55\u8fdb\u884c\u53c2\u6570\u7ed1\u5b9a\uff1f\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002<\/p>\n

\u53c2\u6570\u7ed1\u5b9a\u901a\u8fc7\u5360\u4f4d\u7b26\u5c06\u503c\u7ed1\u5b9a\u5230\u51fd\u6570\u53c2\u6570\uff0c\u4e3a\u5904\u7406\u52a8\u6001\u6570\u636e\u63d0\u4f9b\u4e86\u5b89\u5168\u7b80\u6d01\u7684\u65b9\u6cd5\uff0c\u53ef\u7528\u4e8e\u6570\u636e\u5e93\u67e5\u8be2\u3001\u8868\u5355\u9a8c\u8bc1\u548c\u51fd\u6570\u91cd\u7528\u3002<\/p>\n

\"PHP<\/p>\n

PHP \u51fd\u6570\u4e2d\u7684\u53c2\u6570\u7ed1\u5b9a<\/strong><\/p>\n

\u53c2\u6570\u7ed1\u5b9a\u662f\u5c06\u503c\u7ed1\u5b9a\u5230\u51fd\u6570\u53c2\u6570\u7684\u8fc7\u7a0b\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u5b89\u5168\u3001\u66f4\u7b80\u6d01\u7684\u65b9\u6cd5\u6765\u5904\u7406\u52a8\u6001\u6570\u636e\u3002<\/p>\n

\u8bed\u6cd5<\/strong><\/p>\n

function myFunction(type $param1, type $param2, ...)\n{\n    \/\/ \u51fd\u6570\u4ee3\u7801\n}<\/pre>\n
\u53c2\u6570\u7ed1\u5b9a\u4f7f\u7528\u5360\u4f4d\u7b26\uff08\u4f8b\u5982 ?<\/code>\uff09\u6765\u6307\u5b9a\u53c2\u6570\u3002\u5360\u4f4d\u7b26\u5fc5\u987b\u6309\u987a\u5e8f\u6392\u5217\uff0c\u5e76\u4e14\u4e0e\u8981\u7ed1\u5b9a\u7684\u503c\u7684\u7c7b\u578b\u76f8\u5339\u914d\u3002<\/p>\n
\u4ee3\u7801\u8303\u4f8b<\/strong><\/p>\n
function addNumbers(?int $num1, ?int $num2): ?int\n{\n    if (is_null($num1) || is_null($num2)) {\n        return null;\n    }\n\n    return $num1 + $num2;\n}\n\necho addNumbers(10, 20); \/\/ \u8f93\u51fa\uff1a30<\/pre>\n
\u5728\u4e0a\u4f8b\u4e2d\uff0caddNumbers<\/code> \u51fd\u6570\u6709 2 \u4e2a\u5360\u4f4d\u7b26 ?int<\/code>\uff0c\u5206\u522b\u7ed1\u5b9a\u5230\u6574\u6570\u7c7b\u578b\u7684\u53c2\u6570 $num1<\/code> \u548c $num2<\/code>\u3002\u5982\u679c\u4efb\u4e00\u53c2\u6570\u4e3a null<\/code>\uff0c\u51fd\u6570\u5c06\u8fd4\u56de null<\/code>\uff1b\u5426\u5219\uff0c\u5b83\u5c06\u8fd4\u56de\u4e24\u4e2a\u6570\u5b57\u7684\u548c\u3002<\/p>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u4f7f\u7528\u53c2\u6570\u7ed1\u5b9a\u7684\u5e38\u89c1\u793a\u4f8b\u5305\u62ec\uff1a<\/p>\n
    \n
  • \u6570\u636e\u5e93\u67e5\u8be2\uff1a<\/strong>\u5c06\u7528\u6237\u8f93\u5165\u7ed1\u5b9a\u5230 SQL \u67e5\u8be2\uff0c\u4ee5\u9632\u6b62 SQL \u6ce8\u5165\u653b\u51fb\u3002<\/li>\n
  • \u8868\u5355\u9a8c\u8bc1\uff1a<\/strong>\u786e\u4fdd\u8868\u5355\u8f93\u5165\u4e0e\u9884\u671f\u7684\u6570\u636e\u7c7b\u578b\u5339\u914d\u3002<\/li>\n
  • \u51fd\u6570\u91cd\u7528\u6027\uff1a<\/strong>\u521b\u5efa\u66f4\u901a\u7528\u7684\u51fd\u6570\uff0c\u53ef\u4ee5\u5904\u7406\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\u3002<\/li>\n<\/ul>\n
    \u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n
      \n
    • \u53c2\u6570\u5fc5\u987b\u6309\u987a\u5e8f\u7ed1\u5b9a\u3002<\/li>\n
    • \u5360\u4f4d\u7b26\u7684\u7c7b\u578b\u5fc5\u987b\u4e0e\u7ed1\u5b9a\u503c\u7684\u7c7b\u578b\u5339\u914d\u3002<\/li>\n
    • null<\/code> \u503c\u53ef\u4ee5\u7ed1\u5b9a\u5230\u4efb\u4f55\u7c7b\u578b\u7684\u5360\u4f4d\u7b26\u3002<\/li>\n
    • \u53c2\u6570\u7ed1\u5b9a\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/li>\n<\/ul>\n
      \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":"
      PHP \u51fd\u6570\u4e2d\u5982\u4f55\u8fdb\u884c\u53c2\u6570\u7ed1\u5b9a\uff1f \u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300aPHP \u51fd\u6570\u4e2d\u5982\u4f55\u8fdb\u884c\u53c2\u6570\u7ed1\u5b9a\uff1f\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002 \u53c2\u6570\u7ed1\u5b9a\u901a\u8fc7\u5360\u4f4d\u7b26\u5c06\u503c\u7ed1\u5b9a\u5230\u51fd\u6570\u53c2\u6570\uff0c\u4e3a\u5904\u7406\u52a8\u6001\u6570\u636e\u63d0\u4f9b\u4e86\u5b89\u5168\u7b80\u6d01\u7684\u65b9\u6cd5\uff0c\u53ef\u7528\u4e8e\u6570\u636e\u5e93\u67e5\u8be2\u3001\u8868\u5355\u9a8c\u8bc1\u548c\u51fd\u6570\u91cd\u7528\u3002 PHP \u51fd\u6570\u4e2d\u7684\u53c2\u6570\u7ed1\u5b9a \u53c2\u6570\u7ed1\u5b9a\u662f\u5c06\u503c\u7ed1\u5b9a\u5230\u51fd\u6570\u53c2\u6570\u7684\u8fc7\u7a0b\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u5b89\u5168\u3001\u66f4\u7b80\u6d01\u7684\u65b9\u6cd5\u6765\u5904\u7406\u52a8\u6001\u6570\u636e\u3002 \u8bed\u6cd5 function myFunction(type $param1, type $param2, …) { \/\/ \u51fd\u6570\u4ee3\u7801 } \u53c2\u6570\u7ed1\u5b9a\u4f7f\u7528\u5360\u4f4d\u7b26\uff08\u4f8b\u5982 ?\uff09\u6765\u6307\u5b9a\u53c2\u6570\u3002\u5360\u4f4d\u7b26\u5fc5\u987b\u6309\u987a\u5e8f\u6392\u5217\uff0c\u5e76\u4e14\u4e0e\u8981\u7ed1\u5b9a\u7684\u503c\u7684\u7c7b\u578b\u76f8\u5339\u914d\u3002 \u4ee3\u7801\u8303\u4f8b function addNumbers(?int $num1, ?int $num2): ?int { if (is_null($num1) || is_null($num2)) { return null; } return $num1 + $num2; } echo addNumbers(10, 20); \/\/ \u8f93\u51fa\uff1a30 \u5728\u4e0a\u4f8b\u4e2d\uff0caddNumbers \u51fd\u6570\u6709 2 \u4e2a\u5360\u4f4d\u7b26 ?int\uff0c\u5206\u522b\u7ed1\u5b9a\u5230\u6574\u6570\u7c7b\u578b\u7684\u53c2\u6570 $num1 \u548c $num2\u3002\u5982\u679c\u4efb\u4e00\u53c2\u6570\u4e3a […]<\/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-46728","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/46728","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=46728"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/46728\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=46728"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=46728"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=46728"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}