Fatal error: Uncaught Error: Call to undefined function mysqli_connect() in D:\netcc_website\123soft.cn\vc_api\conn.php:8 Stack trace: #0 D:\netcc_website\123soft.cn\vc_api\jiance.php(2): include() #1 {main} thrown in D:\netcc_website\123soft.cn\vc_api\conn.php on line 8