{"id":48220,"date":"2024-12-02T11:31:41","date_gmt":"2024-12-02T03:31:41","guid":{"rendered":"https:\/\/fwq.ai\/blog\/48220\/"},"modified":"2024-12-02T11:31:41","modified_gmt":"2024-12-02T03:31:41","slug":"php%e5%87%bd%e6%95%b0%e6%b5%8b%e8%af%95%e4%b8%8e%e8%b0%83%e8%af%95%e6%8a%80%e5%b7%a7%ef%bc%9a%e5%a6%82%e4%bd%95%e8%b0%83%e8%af%95%e6%95%b0%e6%8d%ae%e5%ba%93%e9%97%ae%e9%a2%98%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/48220\/","title":{"rendered":"php\u51fd\u6570\u6d4b\u8bd5\u4e0e\u8c03\u8bd5\u6280\u5de7\uff1a\u5982\u4f55\u8c03\u8bd5\u6570\u636e\u5e93\u95ee\u9898\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>php\u51fd\u6570\u6d4b\u8bd5\u4e0e\u8c03\u8bd5\u6280\u5de7\uff1a\u5982\u4f55\u8c03\u8bd5\u6570\u636e\u5e93\u95ee\u9898\uff1f<\/h1>\n<p>\u4f60\u5728\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300aphp\u51fd\u6570\u6d4b\u8bd5\u4e0e\u8c03\u8bd5\u6280\u5de7\uff1a\u5982\u4f55\u8c03\u8bd5\u6570\u636e\u5e93\u95ee\u9898\uff1f\u300b<\/span>\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01<\/p>\n<p>\u8c03\u8bd5\u6570\u636e\u5e93\u95ee\u9898\u65f6\uff0c\u53ef\u4f7f\u7528\u4ee5\u4e0b\u6280\u5de7\uff1a\u4f7f\u7528 try-catch-finally \u5757\u6765\u5b89\u5168\u5730\u5904\u7406\u5f02\u5e38\u3002\u4f7f\u7528 var_dump() \u6216 print_r() \u6765\u8c03\u8bd5\u67e5\u8be2\u7ed3\u679c\u3002\u4f7f\u7528\u65e5\u5fd7\u8bb0\u5f55\u6765\u8bb0\u5f55\u6570\u636e\u5e93\u64cd\u4f5c\u3001\u9519\u8bef\u548c\u67e5\u8be2\u8be6\u7ec6\u4fe1\u606f\u3002\u4f7f\u7528 Xdebug \u8c03\u8bd5\u5668\u6765\u5355\u6b65\u6267\u884c\u4ee3\u7801\u5e76\u68c0\u67e5\u53d8\u91cf\u3002\u4f7f\u7528\u6570\u636e\u5e93\u7ba1\u7406\u5de5\u5177\u6765\u8bca\u65ad\u6570\u636e\u5e93\u8fde\u63a5\u95ee\u9898\u3001\u8868\u7ed3\u6784\u548c\u67e5\u8be2\u6027\u80fd\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241027\/1730000743671db767b256f.jpg\" class=\"aligncenter\" title=\"php\u51fd\u6570\u6d4b\u8bd5\u4e0e\u8c03\u8bd5\u6280\u5de7\uff1a\u5982\u4f55\u8c03\u8bd5\u6570\u636e\u5e93\u95ee\u9898\uff1f\u63d2\u56fe\" alt=\"php\u51fd\u6570\u6d4b\u8bd5\u4e0e\u8c03\u8bd5\u6280\u5de7\uff1a\u5982\u4f55\u8c03\u8bd5\u6570\u636e\u5e93\u95ee\u9898\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>PHP \u51fd\u6570\u6d4b\u8bd5\u4e0e\u8c03\u8bd5\u6280\u5de7\uff1a\u8c03\u8bd5\u6570\u636e\u5e93\u95ee\u9898<\/strong><\/p>\n<p><strong>\u524d\u8a00<\/strong><\/p>\n<p>\u6570\u636e\u5e93\u95ee\u9898\u662f PHP \u5f00\u53d1\u4e2d\u5e38\u89c1\u7684\u6311\u6218\u3002\u8c03\u8bd5\u6570\u636e\u5e93\u95ee\u9898\u53ef\u80fd\u65e2\u8017\u65f6\u53c8\u4ee4\u4eba\u6cae\u4e27\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u6709\u7528\u7684\u6280\u5de7\uff0c\u5e2e\u52a9\u60a8\u5feb\u901f\u6709\u6548\u5730\u8bc6\u522b\u548c\u89e3\u51b3\u4e0e\u6570\u636e\u5e93\u76f8\u5173\u7684 PHP \u51fd\u6570\u95ee\u9898\u3002<\/p>\n<p><strong>\u4f7f\u7528 <code>try-catch-finally<\/code> \u5757<\/strong><\/p>\n<p><code>try-catch-finally<\/code> \u5757\u662f\u5904\u7406\u6570\u636e\u5e93\u76f8\u5173\u5f02\u5e38\u7684\u4e00\u79cd\u5b89\u5168\u4e14\u7b80\u4fbf\u7684\u65b9\u6cd5\u3002<code>try<\/code> \u5757\u5305\u542b\u60a8\u8981\u6267\u884c\u7684\u4ee3\u7801\uff0c<code>catch<\/code> \u5757\u6355\u83b7\u4efb\u4f55\u629b\u51fa\u7684\u5f02\u5e38\uff0c<code>finally<\/code> \u5757\u59cb\u7ec8\u6267\u884c\uff0c\u65e0\u8bba\u662f\u5426\u53d1\u751f\u5f02\u5e38\u3002<\/p>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<pre>try {\n    \/\/ \u6267\u884c\u6570\u636e\u5e93\u67e5\u8be2\n    $result = $db-&gt;query($sql);\n\n    \/\/ \u8fed\u4ee3\u7ed3\u679c\n    while ($row = $result-&gt;fetch()) {\n        \/\/ \u5904\u7406\u6570\u636e\n    }\n} catch (Exception $e) {\n    \/\/ \u6355\u83b7\u5f02\u5e38\u5e76\u8bb0\u5f55\u6216\u663e\u793a\u9519\u8bef\u8be6\u60c5\n} finally {\n    \/\/ \u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5\u6216\u6267\u884c\u5176\u4ed6\u6e05\u7406\u4efb\u52a1\n}<\/pre>\n<p><strong>\u8c03\u8bd5\u67e5\u8be2<\/strong><\/p>\n<p>PHP \u63d0\u4f9b\u4e86 <code>var_dump()<\/code> \u548c <code>print_r()<\/code> \u51fd\u6570\uff0c\u7528\u4e8e\u8c03\u8bd5\u67e5\u8be2\u7ed3\u679c\u3002\u8fd9\u4e9b\u51fd\u6570\u53ef\u4ee5\u901a\u8fc7\u5c06\u7ed3\u679c\u4ee5\u53ef\u8bfb\u683c\u5f0f\u6253\u5370\u5230\u63a7\u5236\u53f0\u4e2d\u6765\u5e2e\u52a9\u60a8\u68c0\u67e5\u7ed3\u679c\u7684\u7ed3\u6784\u548c\u5185\u5bb9\u3002<\/p>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<pre>\/\/ \u67e5\u8be2\u6570\u636e\u5e93\u5e76\u83b7\u53d6\u7ed3\u679c\n$result = $db-&gt;query($sql);\n\n\/\/ \u6253\u5370\u7ed3\u679c\u4ee5\u8fdb\u884c\u68c0\u67e5\nvar_dump($result-&gt;fetchAll());<\/pre>\n<p><strong>\u4f7f\u7528\u65e5\u5fd7\u8bb0\u5f55<\/strong><\/p>\n<p>\u5bf9\u4e8e\u66f4\u590d\u6742\u7684\u8c03\u8bd5\uff0c\u65e5\u5fd7\u8bb0\u5f55\u662f\u4e00\u4e2a\u5b9d\u8d35\u7684\u5de5\u5177\u3002PHP \u63d0\u4f9b\u4e86 <code>Monolog<\/code> \u548c <code>Psr\\Log<\/code> \u7b49\u5e93\u6765\u7b80\u5316\u65e5\u5fd7\u8bb0\u5f55\u8fc7\u7a0b\u3002\u60a8\u53ef\u4ee5\u8bb0\u5f55\u6570\u636e\u5e93\u64cd\u4f5c\u3001\u9519\u8bef\u548c\u67e5\u8be2\u8be6\u7ec6\u4fe1\u606f\uff0c\u4ee5\u4fbf\u4ee5\u540e\u8fdb\u884c\u5206\u6790\u3002<\/p>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<pre>use Monolog\\Logger;\nuse Monolog\\Handler\\StreamHandler;\n\n\/\/ \u521b\u5efa\u4e00\u4e2a\u65e5\u5fd7\u8bb0\u5f55\u5668\n$log = new Logger('my_logger');\n\n\/\/ \u6dfb\u52a0\u5904\u7406\u7a0b\u5e8f\u4ee5\u8bb0\u5f55\u5230\u6587\u4ef6\n$log-&gt;pushHandler(new StreamHandler('my.log', Logger::DEBUG));\n\n\/\/ \u8bb0\u5f55\u8c03\u8bd5\u4fe1\u606f\n$log-&gt;debug('Executed query: ' . $sql);<\/pre>\n<p><strong>\u4f7f\u7528 Xdebug<\/strong><\/p>\n<p>Xdebug \u662f\u4e00\u4e2a PHP \u8c03\u8bd5\u5668\uff0c\u5b83\u63d0\u4f9b\u4e86\u5e7f\u6cdb\u7684\u529f\u80fd\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u5355\u6b65\u6267\u884c\u4ee3\u7801<\/li>\n<li>\u68c0\u67e5\u53d8\u91cf<\/li>\n<li>\u67e5\u770b\u8c03\u7528\u5806\u6808<\/li>\n<\/ul>\n<p>\u60a8\u53ef\u4ee5\u8bbe\u7f6e\u65ad\u70b9\u5e76\u9010\u884c\u6267\u884c\u4ee3\u7801\uff0c\u8fd9\u5bf9\u4e8e\u8ddf\u8e2a\u6570\u636e\u5e93\u64cd\u4f5c\u7684\u6267\u884c\u6d41\u975e\u5e38\u6709\u7528\u3002<\/p>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<p>\u9996\u5148\uff0c\u5b89\u88c5\u5e76\u914d\u7f6e Xdebug\u3002\u7136\u540e\uff0c\u60a8\u53ef\u4ee5\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4\u6765\u5728 Visual Studio Code \u4e2d\u542f\u7528\u8c03\u8bd5\uff1a<\/p>\n<pre>php xdebug -dc debug.idekey=VSCODE<\/pre>\n<p><strong>\u4f7f\u7528\u6570\u636e\u5e93\u7ba1\u7406\u5de5\u5177<\/strong><\/p>\n<p>\u6570\u636e\u5e93\u7ba1\u7406\u5de5\u5177\uff08\u5982 MySQL Workbench \u6216 pgAdmin\uff09\u63d0\u4f9b\u4e86\u76f4\u89c2\u7684\u754c\u9762\u6765\u67e5\u8be2\u3001\u7f16\u8f91\u548c\u7ba1\u7406\u6570\u636e\u5e93\u3002\u8fd9\u4e9b\u5de5\u5177\u53ef\u4ee5\u5e2e\u52a9\u60a8\u5feb\u901f\u8bca\u65ad\u6570\u636e\u5e93\u8fde\u63a5\u95ee\u9898\u3001\u8868\u7ed3\u6784\u548c\u67e5\u8be2\u6027\u80fd\u3002<\/p>\n<p><strong>\u5b9e\u6218\u6848\u4f8b\uff1a\u8fde\u63a5\u8d85\u65f6\u95ee\u9898<\/strong><\/p>\n<p>\u5982\u679c\u60a8\u9047\u5230\u6570\u636e\u5e93\u8fde\u63a5\u8d85\u65f6\u95ee\u9898\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6280\u5de7\u8fdb\u884c\u8c03\u8bd5\uff1a<\/p>\n<ul>\n<li>\u68c0\u67e5\u670d\u52a1\u5668\u548c\u6570\u636e\u5e93\u662f\u5426\u6b63\u5728\u8fd0\u884c\u3002<\/li>\n<li>\u9a8c\u8bc1\u8fde\u63a5\u5b57\u7b26\u4e32\u662f\u5426\u6b63\u786e\u3002<\/li>\n<li>\u786e\u4fdd\u6ca1\u6709\u9632\u706b\u5899\u963b\u6b62\u8fde\u63a5\u3002<\/li>\n<li>\u4f7f\u7528 <code>try-catch<\/code> \u5757\u6355\u83b7 <code>PDOConnectionException<\/code>\u3002<\/li>\n<li>\u4f7f\u7528\u65e5\u5fd7\u8bb0\u5f55\u6765\u8bb0\u5f55\u8fde\u63a5\u5c1d\u8bd5\u548c\u9519\u8bef\u6d88\u606f\u3002<\/li>\n<\/ul>\n<p>\u4eca\u5929\u5173\u4e8e\u300aphp\u51fd\u6570\u6d4b\u8bd5\u4e0e\u8c03\u8bd5\u6280\u5de7\uff1a\u5982\u4f55\u8c03\u8bd5\u6570\u636e\u5e93\u95ee\u9898\uff1f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8ephp,\u8c03\u8bd5\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>php\u51fd\u6570\u6d4b\u8bd5\u4e0e\u8c03\u8bd5\u6280\u5de7\uff1a\u5982\u4f55\u8c03\u8bd5\u6570\u636e\u5e93\u95ee\u9898\uff1f \u4f60\u5728\u5b66\u4e60\u6587\u7ae0\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587\u300aphp\u51fd\u6570\u6d4b\u8bd5\u4e0e\u8c03\u8bd5\u6280\u5de7\uff1a\u5982\u4f55\u8c03\u8bd5\u6570\u636e\u5e93\u95ee\u9898\uff1f\u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01 \u8c03\u8bd5\u6570\u636e\u5e93\u95ee\u9898\u65f6\uff0c\u53ef\u4f7f\u7528\u4ee5\u4e0b\u6280\u5de7\uff1a\u4f7f\u7528 try-catch-finally \u5757\u6765\u5b89\u5168\u5730\u5904\u7406\u5f02\u5e38\u3002\u4f7f\u7528 var_dump() \u6216 print_r() \u6765\u8c03\u8bd5\u67e5\u8be2\u7ed3\u679c\u3002\u4f7f\u7528\u65e5\u5fd7\u8bb0\u5f55\u6765\u8bb0\u5f55\u6570\u636e\u5e93\u64cd\u4f5c\u3001\u9519\u8bef\u548c\u67e5\u8be2\u8be6\u7ec6\u4fe1\u606f\u3002\u4f7f\u7528 Xdebug \u8c03\u8bd5\u5668\u6765\u5355\u6b65\u6267\u884c\u4ee3\u7801\u5e76\u68c0\u67e5\u53d8\u91cf\u3002\u4f7f\u7528\u6570\u636e\u5e93\u7ba1\u7406\u5de5\u5177\u6765\u8bca\u65ad\u6570\u636e\u5e93\u8fde\u63a5\u95ee\u9898\u3001\u8868\u7ed3\u6784\u548c\u67e5\u8be2\u6027\u80fd\u3002 PHP \u51fd\u6570\u6d4b\u8bd5\u4e0e\u8c03\u8bd5\u6280\u5de7\uff1a\u8c03\u8bd5\u6570\u636e\u5e93\u95ee\u9898 \u524d\u8a00 \u6570\u636e\u5e93\u95ee\u9898\u662f PHP \u5f00\u53d1\u4e2d\u5e38\u89c1\u7684\u6311\u6218\u3002\u8c03\u8bd5\u6570\u636e\u5e93\u95ee\u9898\u53ef\u80fd\u65e2\u8017\u65f6\u53c8\u4ee4\u4eba\u6cae\u4e27\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u6709\u7528\u7684\u6280\u5de7\uff0c\u5e2e\u52a9\u60a8\u5feb\u901f\u6709\u6548\u5730\u8bc6\u522b\u548c\u89e3\u51b3\u4e0e\u6570\u636e\u5e93\u76f8\u5173\u7684 PHP \u51fd\u6570\u95ee\u9898\u3002 \u4f7f\u7528 try-catch-finally \u5757 try-catch-finally \u5757\u662f\u5904\u7406\u6570\u636e\u5e93\u76f8\u5173\u5f02\u5e38\u7684\u4e00\u79cd\u5b89\u5168\u4e14\u7b80\u4fbf\u7684\u65b9\u6cd5\u3002try \u5757\u5305\u542b\u60a8\u8981\u6267\u884c\u7684\u4ee3\u7801\uff0ccatch \u5757\u6355\u83b7\u4efb\u4f55\u629b\u51fa\u7684\u5f02\u5e38\uff0cfinally \u5757\u59cb\u7ec8\u6267\u884c\uff0c\u65e0\u8bba\u662f\u5426\u53d1\u751f\u5f02\u5e38\u3002 \u793a\u4f8b try { \/\/ \u6267\u884c\u6570\u636e\u5e93\u67e5\u8be2 $result = $db-&gt;query($sql); \/\/ \u8fed\u4ee3\u7ed3\u679c while ($row = $result-&gt;fetch()) { \/\/ \u5904\u7406\u6570\u636e } } catch (Exception $e) { \/\/ \u6355\u83b7\u5f02\u5e38\u5e76\u8bb0\u5f55\u6216\u663e\u793a\u9519\u8bef\u8be6\u60c5 } finally { 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