{"id":202461,"date":"2025-05-13T10:16:53","date_gmt":"2025-05-13T02:16:53","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202461\/"},"modified":"2025-05-13T10:16:53","modified_gmt":"2025-05-13T02:16:53","slug":"%e5%a6%82%e4%bd%95%e5%a4%84%e7%90%86-php-%e5%87%bd%e6%95%b0%e4%b8%ad%e6%8a%9b%e5%87%ba%e7%9a%84%e5%bc%82%e5%b8%b8%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202461\/","title":{"rendered":"\u5982\u4f55\u5904\u7406 PHP \u51fd\u6570\u4e2d\u629b\u51fa\u7684\u5f02\u5e38\uff1f"},"content":{"rendered":"

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

\u5982\u4f55\u5904\u7406 PHP \u51fd\u6570\u4e2d\u629b\u51fa\u7684\u5f02\u5e38\uff1f<\/h1>\n

\u5c0f\u4f19\u4f34\u4eec\u6709\u6ca1\u6709\u89c9\u5f97\u5b66\u4e60\u6587\u7ae0<\/span>\u5f88\u6709\u610f\u601d\uff1f\u6709\u610f\u601d\u5c31\u5bf9\u4e86\uff01\u4eca\u5929\u5c31\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u5982\u4f55\u5904\u7406 PHP \u51fd\u6570\u4e2d\u629b\u51fa\u7684\u5f02\u5e38\uff1f\u300b<\/span>\uff0c\u4ee5\u4e0b\u5185\u5bb9\u5c06\u4f1a\u6d89\u53ca\u5230<\/span>\uff0c\u82e5\u662f\u5728\u5b66\u4e60\u4e2d\u5bf9\u5176\u4e2d\u90e8\u5206\u77e5\u8bc6\u70b9\u6709\u7591\u95ee\uff0c\u6216\u8bb8\u770b\u4e86\u672c\u6587\u5c31\u80fd\u5e2e\u5230\u4f60\uff01<\/p>\n

PHP \u51fd\u6570\u4e2d\u629b\u51fa\u7684\u5f02\u5e38\u53ef\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u5904\u7406\uff1atry-catch \u5757\uff1atry \u5757\u4e2d\u5305\u542b\u53ef\u80fd\u629b\u51fa\u5f02\u5e38\u7684\u4ee3\u7801\uff0ccatch \u5757\u6355\u83b7\u5f02\u5e38\u5e76\u5904\u7406\u3002\u5f02\u5e38\u7c7b\uff1aException \u63d0\u4f9b\u6709\u5173\u5f02\u5e38\u7684\u4fe1\u606f\uff0c\u53ef\u83b7\u53d6\u4ee3\u7801\u3001\u6d88\u606f\u548c\u6808\u8ddf\u8e2a\u3002\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\uff1a\u521b\u5efa\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u63d0\u4f9b\u7279\u5b9a\u7c7b\u578b\u7684\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n

<\/p>\n

\u5982\u4f55\u5904\u7406 PHP \u51fd\u6570\u4e2d\u629b\u51fa\u7684\u5f02\u5e38<\/strong><\/p>\n

PHP \u51fd\u6570\u4e2d\u7684\u5f02\u5e38\u53ef\u4ee5\u7528\u6765\u6307\u793a\u8fd0\u884c\u65f6\u53d1\u751f\u7684\u9519\u8bef\u3002\u5904\u7406\u5f02\u5e38\u5bf9\u4e8e\u5065\u58ee\u548c\u53ef\u7ef4\u62a4\u7684\u4ee3\u7801\u81f3\u5173\u91cd\u8981\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5904\u7406 PHP \u51fd\u6570\u4e2d\u629b\u51fa\u7684\u5f02\u5e38\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e2a\u5b9e\u6218\u6848\u4f8b\u3002<\/p>\n

try-catch \u5757<\/strong><\/p>\n

\u5904\u7406\u5f02\u5e38\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 try-catch \u5757\u3002try-catch \u5757\u7684\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

try {\n    \/\/ \u4ee3\u7801\u5757\u53ef\u80fd\u629b\u51fa\u5f02\u5e38\n} catch (Exception $e) {\n    \/\/ \u5904\u7406\u5f02\u5e38\u7684\u4ee3\u7801\u5757\n}<\/pre>\n
\u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
\u4e0b\u9762\u662f\u4e00\u4e2a\u5b9e\u6218\u6848\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u4f7f\u7528 try-catch \u5757\u6765\u5904\u7406\u51fd\u6570\u4e2d\u629b\u51fa\u7684\u5f02\u5e38\uff1a<\/p>\n
<?php\n\nfunction divide($num1, $num2) {\n    if ($num2 == 0) {\n        throw new Exception(\"Division by zero\");\n    }\n    return $num1 \/ $num2;\n}\n\ntry {\n    echo divide(10, 2);\n    echo divide(10, 0);  \/\/ \u4f1a\u629b\u51fa\u4e00\u4e2a\u5f02\u5e38\n} catch (Exception $e) {\n    echo \"Error: \" . $e->getMessage();\n}<\/pre>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cdivide \u51fd\u6570\u5728 num2 \u4e3a 0 \u65f6\u629b\u51fa\u4e00\u4e2a\u5f02\u5e38\u3002try-catch \u5757\u6355\u83b7\u8fd9\u4e2a\u5f02\u5e38\u5e76\u8f93\u51fa\u9519\u8bef\u6d88\u606f\u3002<\/p>\n
\u5f02\u5e38\u7c7b<\/strong><\/p>\n
\u5f02\u5e38\u662f PHP \u4e2d\u7684\u4e00\u4e2a\u9884\u5b9a\u4e49\u7c7b\uff0c\u5b83\u63d0\u4f9b\u4e86\u6709\u5173\u9519\u8bef\u7684\u4fe1\u606f\u3002\u6211\u4eec\u53ef\u4ee5\u83b7\u53d6\u5f02\u5e38\u7684\u7c7b\u578b\u3001\u6d88\u606f\u548c\u6808\u8ddf\u8e2a\u3002<\/p>\n
\/\/ assume $e is an Exception object\necho $e->getCode(); \/\/ \u5f02\u5e38\u4ee3\u7801\necho $e->getMessage(); \/\/ \u5f02\u5e38\u6d88\u606f\necho $e->getTraceAsString(); \/\/ \u5f02\u5e38\u6808\u8ddf\u8e2a<\/pre>\n
\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b<\/strong><\/p>\n
\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u81ea\u5b9a\u4e49\u5f02\u5e38\u7c7b\u6765\u63d0\u4f9b\u7279\u5b9a\u7c7b\u578b\u7684\u9519\u8bef\u4fe1\u606f\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a DivisionByZeroException \u7c7b\uff1a<\/p>\n
<?php\n\nclass DivisionByZeroException extends Exception {\n    public function __construct() {\n        parent::__construct(\"Division by zero\");\n    }\n}<\/pre>\n
\u7136\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4fee\u6539 divide \u51fd\u6570\u6765\u629b\u51fa\u8fd9\u4e2a\u81ea\u5b9a\u4e49\u5f02\u5e38\uff1a<\/p>\n
<?php\n\nfunction divide($num1, $num2) {\n    if ($num2 == 0) {\n        throw new DivisionByZeroException();\n    }\n    return $num1 \/ $num2;\n}<\/pre>\n
\u4ee5\u4e0a\u5c31\u662f\u300a\u5982\u4f55\u5904\u7406 PHP \u51fd\u6570\u4e2d\u629b\u51fa\u7684\u5f02\u5e38\uff1f\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5982\u4f55\u5904\u7406 PHP \u51fd\u6570\u4e2d\u629b\u51fa\u7684\u5f02...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-202461","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202461","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202461"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202461\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202461"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202461"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}