$servername = "localhost";
$username = "your_username";
$password = "your_password";
$db_name = 'your_database_name';
$con = new mysqli($servername, $username, $password, $db_name);
if ($con->connect_error) {
die("Connection failed: " . $mysqli->connect_errno . " : " . $con->connect_error);
}
echo "Connection Success: " . $con->host_info;
$con->close();
/*
run:
Connection Success: localhost via TCP/IP
*/