{"id":48075,"date":"2024-12-02T10:26:11","date_gmt":"2024-12-02T02:26:11","guid":{"rendered":"https:\/\/fwq.ai\/blog\/48075\/"},"modified":"2024-12-02T10:26:11","modified_gmt":"2024-12-02T02:26:11","slug":"php%e5%87%bd%e6%95%b0%e5%a6%82%e4%bd%95%e5%a4%84%e7%90%86%e9%94%99%e8%af%af%e5%8f%82%e6%95%b0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/48075\/","title":{"rendered":"PHP\u51fd\u6570\u5982\u4f55\u5904\u7406\u9519\u8bef\u53c2\u6570"},"content":{"rendered":"

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

PHP\u51fd\u6570\u5982\u4f55\u5904\u7406\u9519\u8bef\u53c2\u6570<\/h1>\n

\u5b66\u4e60\u6587\u7ae0<\/span>\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d\u8981\u6025\uff01\u4eca\u5929\u7684\u8fd9\u7bc7\u6587\u7ae0\u300aPHP\u51fd\u6570\u5982\u4f55\u5904\u7406\u9519\u8bef\u53c2\u6570\u300b<\/span>\u5c06\u4f1a\u4ecb\u7ecd\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u60f3\u6df1\u5165\u5b66\u4e60\u6587\u7ae0<\/span>\uff0c\u53ef\u4ee5\u5173\u6ce8\u6211\uff01\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\u7684\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u80fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n

PHP \u51fd\u6570\u5904\u7406\u9519\u8bef\u53c2\u6570\u7684\u65b9\u6cd5\uff1a\u7c7b\u578b\u68c0\u67e5\uff1a\u68c0\u67e5\u53c2\u6570\u7c7b\u578b\uff0c\u4e0d\u5339\u914d\u65f6\u629b\u51fa\u5f02\u5e38\u3002\u9ed8\u8ba4\u503c\uff1a\u4e3a\u53ef\u9009\u53c2\u6570\u6307\u5b9a\u9ed8\u8ba4\u503c\uff0c\u65e0\u9700\u68c0\u67e5\u53c2\u6570\u5b58\u5728\u6027\u3002\u7c7b\u578b\u63d0\u793a\uff1a\u5728\u51fd\u6570\u7b7e\u540d\u4e2d\u6307\u5b9a\u53c2\u6570\u7c7b\u578b\uff0c\u4e0d\u5339\u914d\u65f6\u89e6\u53d1 TypeError\u3002\u5f02\u5e38\uff1a\u629b\u51fa\u5f02\u5e38\u6307\u793a\u9519\u8bef\u53c2\u6570\uff0c\u505c\u6b62\u6267\u884c\u5e76\u4f20\u9012\u6d88\u606f\u3002<\/p>\n

\"PHP\u51fd\u6570\u5982\u4f55\u5904\u7406\u9519\u8bef\u53c2\u6570\u63d2\u56fe\"<\/p>\n

PHP \u51fd\u6570\u5982\u4f55\u5904\u7406\u9519\u8bef\u53c2\u6570<\/strong><\/p>\n

\u7b80\u4ecb<\/strong><\/p>\n

\u5728 PHP \u4e2d\uff0c\u51fd\u6570\u53ef\u4ee5\u63a5\u53d7\u591a\u4e2a\u53c2\u6570\u3002\u5982\u679c\u4f20\u9012\u7ed9\u51fd\u6570\u7684\u53c2\u6570\u4e0d\u5339\u914d\u51fd\u6570\u7b7e\u540d\u5b9a\u4e49\u7684\u7c7b\u578b\u6216\u6570\u91cf\uff0c\u5219\u5c06\u89c6\u4e3a\u9519\u8bef\u53c2\u6570\u3002\u672c\u6587\u63a2\u8ba8\u4e86 PHP \u4e2d\u5904\u7406\u9519\u8bef\u53c2\u6570\u7684\u4e0d\u540c\u65b9\u6cd5\u3002<\/p>\n

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

\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 if<\/code> \u8bed\u53e5\u548c\u5176\u4ed6\u6761\u4ef6\u68c0\u67e5\u6765\u68c0\u67e5\u7279\u5b9a\u53c2\u6570\u7684\u7c7b\u578b\u3002\u4ee5\u4e0b\u4ee3\u7801\u68c0\u67e5 $name<\/code> \u53c2\u6570\u662f\u5426\u4e3a\u5b57\u7b26\u4e32\uff1a<\/p>\n

function greet($name) {\n  if (!is_string($name)) {\n    throw new InvalidArgumentException('Name must be a string.');\n  }\n\n  \/\/ ...\n}<\/pre>\n
\u9ed8\u8ba4\u503c<\/strong><\/p>\n
\u53ef\u4ee5\u4e3a\u53ef\u9009\u53c2\u6570\u6307\u5b9a\u9ed8\u8ba4\u503c\uff0c\u4ee5\u4fbf\u5728\u672a\u63d0\u4f9b\u53c2\u6570\u65f6\u4f7f\u7528\u3002\u8fd9\u6d88\u9664\u4e86\u68c0\u67e5\u53c2\u6570\u5b58\u5728\u6027\u7684\u9700\u8981\uff1a<\/p>\n
function greet($name = 'World') {\n  \/\/ ...\n}\n\ngreet(); \/\/ \u7b49\u540c\u4e8e greet('World')<\/pre>\n
\u7c7b\u578b\u63d0\u793a<\/strong><\/p>\n
PHP 7 \u53ca\u66f4\u9ad8\u7248\u672c\u652f\u6301\u7c7b\u578b\u63d0\u793a\uff0c\u5141\u8bb8\u5728\u51fd\u6570\u7b7e\u540d\u4e2d\u6307\u5b9a\u53c2\u6570\u7c7b\u578b\u3002\u5f53\u4f20\u9012\u7684\u5b9e\u9645\u53c2\u6570\u7c7b\u578b\u4e0d\u5339\u914d\u58f0\u660e\u7684\u7c7b\u578b\u65f6\uff0c\u4f1a\u89e6\u53d1 TypeError\uff1a<\/p>\n
function greet(string $name): void {\n  \/\/ ...\n}\n\ngreet(123); \/\/ TypeError: Argument 1 passed to greet() must be of the type string, integer given<\/pre>\n
\u5f02\u5e38<\/strong><\/p>\n
\u53ef\u4ee5\u629b\u51fa\u5f02\u5e38\u4ee5\u6307\u793a\u9519\u8bef\u53c2\u6570\u3002\u5f02\u5e38\u5c06\u505c\u6b62\u51fd\u6570\u6267\u884c\u5e76\u4f20\u9012\u6d88\u606f\uff0c\u4f9b\u8c03\u7528\u8005\u5904\u7406\u3002\u4ee5\u4e0b\u4ee3\u7801\u793a\u4f8b\u629b\u51fa\u4e00\u4e2a InvalidArgumentException<\/code>\uff1a<\/p>\n
function greet($name) {\n  if (!is_string($name)) {\n    throw new InvalidArgumentException('Name must be a string.');\n  }\n\n  \/\/ ...\n}<\/pre>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u8003\u8651\u4ee5\u4e0b\u529f\u80fd\uff0c\u5b83\u5c06\u4e24\u4e2a\u6570\u5b57\u76f8\u4e58\uff1a<\/p>\n
function multiply($num1, $num2) {\n  if (!is_numeric($num1) || !is_numeric($num2)) {\n    throw new InvalidArgumentException('Both arguments must be numeric.');\n  }\n\n  return $num1 * $num2;\n}<\/pre>\n
\u5728\u4ee5\u4e0b\u793a\u4f8b\u4e2d\uff0c\u6211\u5c1d\u8bd5\u4e58\u4ee5\u4e00\u4e2a\u6570\u5b57\u548c\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u4f1a\u629b\u51fa\u4e00\u4e2a\u5f02\u5e38\uff1a<\/p>\n
try {\n  $result = multiply(10, 'five');\n} catch (InvalidArgumentException $e) {\n  echo $e->getMessage();\n}<\/pre>\n
\u8f93\u51fa\uff1a<\/p>\n
Both arguments must be numeric.<\/pre>\n
\u672c\u7bc7\u5173\u4e8e\u300aPHP\u51fd\u6570\u5982\u4f55\u5904\u7406\u9519\u8bef\u53c2\u6570\u300b\u7684\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\u5566\uff0c\u4f46\u662f\u5b66\u65e0\u6b62\u5883\uff0c\u60f3\u8981\u4e86\u89e3\u5b66\u4e60\u66f4\u591a\u5173\u4e8e\u6587\u7ae0\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
PHP\u51fd\u6570\u5982\u4f55\u5904\u7406\u9519\u8bef\u53c2\u6570 \u5b66\u4e60\u6587\u7ae0\u8981\u52aa\u529b\uff0c\u4f46\u662f\u4e0d\u8981\u6025\uff01\u4eca\u5929\u7684\u8fd9\u7bc7\u6587\u7ae0\u300aPHP\u51fd\u6570\u5982\u4f55\u5904\u7406\u9519\u8bef\u53c2\u6570\u300b\u5c06\u4f1a\u4ecb\u7ecd\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u4f60\u60f3\u6df1\u5165\u5b66\u4e60\u6587\u7ae0\uff0c\u53ef\u4ee5\u5173\u6ce8\u6211\uff01\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\u7684\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u80fd\u6709\u6240\u5e2e\u52a9\uff01 PHP \u51fd\u6570\u5904\u7406\u9519\u8bef\u53c2\u6570\u7684\u65b9\u6cd5\uff1a\u7c7b\u578b\u68c0\u67e5\uff1a\u68c0\u67e5\u53c2\u6570\u7c7b\u578b\uff0c\u4e0d\u5339\u914d\u65f6\u629b\u51fa\u5f02\u5e38\u3002\u9ed8\u8ba4\u503c\uff1a\u4e3a\u53ef\u9009\u53c2\u6570\u6307\u5b9a\u9ed8\u8ba4\u503c\uff0c\u65e0\u9700\u68c0\u67e5\u53c2\u6570\u5b58\u5728\u6027\u3002\u7c7b\u578b\u63d0\u793a\uff1a\u5728\u51fd\u6570\u7b7e\u540d\u4e2d\u6307\u5b9a\u53c2\u6570\u7c7b\u578b\uff0c\u4e0d\u5339\u914d\u65f6\u89e6\u53d1 TypeError\u3002\u5f02\u5e38\uff1a\u629b\u51fa\u5f02\u5e38\u6307\u793a\u9519\u8bef\u53c2\u6570\uff0c\u505c\u6b62\u6267\u884c\u5e76\u4f20\u9012\u6d88\u606f\u3002 PHP \u51fd\u6570\u5982\u4f55\u5904\u7406\u9519\u8bef\u53c2\u6570 \u7b80\u4ecb \u5728 PHP \u4e2d\uff0c\u51fd\u6570\u53ef\u4ee5\u63a5\u53d7\u591a\u4e2a\u53c2\u6570\u3002\u5982\u679c\u4f20\u9012\u7ed9\u51fd\u6570\u7684\u53c2\u6570\u4e0d\u5339\u914d\u51fd\u6570\u7b7e\u540d\u5b9a\u4e49\u7684\u7c7b\u578b\u6216\u6570\u91cf\uff0c\u5219\u5c06\u89c6\u4e3a\u9519\u8bef\u53c2\u6570\u3002\u672c\u6587\u63a2\u8ba8\u4e86 PHP \u4e2d\u5904\u7406\u9519\u8bef\u53c2\u6570\u7684\u4e0d\u540c\u65b9\u6cd5\u3002 \u7c7b\u578b\u68c0\u67e5 \u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 if \u8bed\u53e5\u548c\u5176\u4ed6\u6761\u4ef6\u68c0\u67e5\u6765\u68c0\u67e5\u7279\u5b9a\u53c2\u6570\u7684\u7c7b\u578b\u3002\u4ee5\u4e0b\u4ee3\u7801\u68c0\u67e5 $name \u53c2\u6570\u662f\u5426\u4e3a\u5b57\u7b26\u4e32\uff1a function greet($name) { if (!is_string($name)) { throw new InvalidArgumentException(‘Name must be a string.’); } \/\/ … } \u9ed8\u8ba4\u503c \u53ef\u4ee5\u4e3a\u53ef\u9009\u53c2\u6570\u6307\u5b9a\u9ed8\u8ba4\u503c\uff0c\u4ee5\u4fbf\u5728\u672a\u63d0\u4f9b\u53c2\u6570\u65f6\u4f7f\u7528\u3002\u8fd9\u6d88\u9664\u4e86\u68c0\u67e5\u53c2\u6570\u5b58\u5728\u6027\u7684\u9700\u8981\uff1a function greet($name = ‘World’) { \/\/ … } greet(); \/\/ \u7b49\u540c\u4e8e greet(‘World’) \u7c7b\u578b\u63d0\u793a PHP 7 \u53ca\u66f4\u9ad8\u7248\u672c\u652f\u6301\u7c7b\u578b\u63d0\u793a\uff0c\u5141\u8bb8\u5728\u51fd\u6570\u7b7e\u540d\u4e2d\u6307\u5b9a\u53c2\u6570\u7c7b\u578b\u3002\u5f53\u4f20\u9012\u7684\u5b9e\u9645\u53c2\u6570\u7c7b\u578b\u4e0d\u5339\u914d\u58f0\u660e\u7684\u7c7b\u578b\u65f6\uff0c\u4f1a\u89e6\u53d1 TypeError\uff1a […]<\/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-48075","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48075","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=48075"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/48075\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=48075"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=48075"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=48075"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}