Fatal error: Uncaught Error: Call to undefined function mysqli_connect() in C:\Wamp64\www\xades\plantillas _con_variables.php:20 Stack trace: #0 C:\Wamp64\www\xades\plantillas _con_variables.php(12): index('', '', '') #1 {main} thrown in C:\Wamp64\www\xades\plantillas _con_variables.php on line 20