$host = "localhost";
$username = "root";
$password = "";
$dbname = "yourdatabasename";


$mysqli = new mysqli($host, $user, $password, $dbname);
if ($mysqli->connect_errno) {
    echo "Failed to connect to MySQL: (" . $mysqli->connect_errno . ") " . $mysqli->connect_error;
}else{
    echo "Successs connected";
}