Get "MySQL In App(Azure)" connection string.

mysqlinapp.php

<?php
define('ENV_STR', 'MYSQLCONNSTR_localdb');

$return = array('result' => false);

if (isset($_SERVER[ENV_STR])) {
    $connectStr = $_SERVER[ENV_STR];

    $return['connection'] = array(
        'host' => preg_replace("/^.*Data Source=(.+?);.*$/", "\\1", $connectStr),
        'database' => preg_replace("/^.*Database=(.+?);.*$/", "\\1", $connectStr),
        'user' => preg_replace("/^.*User Id=(.+?);.*$/", "\\1", $connectStr),
        'password' => preg_replace("/^.*Password=(.+?)$/", "\\1", $connectStr)
    );

    $return['result'] = true;
}

header('Content-Type: application/json; charset=utf-8');
echo json_encode($return);

Can I ask which parts of this code would be changed to retreive the local web app details and connect? Are there any specific parts that I would be needing to change? thanks.