Fatal error: Uncaught Error: Call to undefined function mysqli_connect() in D:\wwwroot\tiantiancaifu.cn\config\.env:3 Stack trace: #0 D:\wwwroot\tiantiancaifu.cn\conn.php(13): require_once() #1 D:\wwwroot\tiantiancaifu.cn\list.php(2): require_once('D:\\wwwroot\\tian...') #2 {main} thrown in D:\wwwroot\tiantiancaifu.cn\config\.env on line 3