<?php
    $db_host = "xxx";
    $db_username = "xxx";
    $db_pass = "xxx";
    $db_name = "xxx";

    $con = mysqli_connect($db_host, $db_username, $db_pass, $db_name);

	if(mysqli_connect_error($con){
		echo "Erro na conexão", mysqli_error();
	}
?>