Fatal error: Uncaught mysqli_sql_exception: 通常每个套接字地址(协议/网络地址/端口)只允许使用一次。 in C:\wwwroot\wnl365\wnl3\date6.php:1118 Stack trace: #0 C:\wwwroot\wnl365\wnl3\date6.php(1118): mysqli->__construct('127.0.0.1:3351', 'wnl_mysql', Object(SensitiveParameterValue), 'wnl_mysql') #1 {main} thrown in C:\wwwroot\wnl365\wnl3\date6.php on line 1118