connection.php

<?php
function Connect()
{
 $dbhost = "localhost";
 $dbuser = "USERNAME";
 $dbpass = "PASSWORD";
 $dbname = "DBNAME";

 // Create connection
 $conn = new mysqli($dbhost, $dbuser, $dbpass, $dbname) or die($conn->connect_error);
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

 return $conn;
}

?>