<?php
/* Connect to an ODBC database using driver invocation */
$dsn = 'sqlsrv:Database=testdb;Server=127.0.0.1';
$user = 'dbuser';
$password = 'dbpass';

try {
    $dbh = new PDO($dsn, $user, $password);
} catch (PDOException $e) {
    echo 'Connection failed: ' . $e->getMessage();
}