Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000] [1040] Too many connections' in F:\szsb2\public\wechatConfig.php:10 Stack trace: #0 F:\szsb2\public\wechatConfig.php(10): PDO->__construct('mysql:host=127....', 'szsb2_dev', 'szsb123456!') #1 F:\szsb2\index.php(23): require('F:\\szsb2\\public...') #2 {main} thrown in F:\szsb2\public\wechatConfig.php on line 10