YouTubeToMp3

<?php
if(isset($_POST['video_url'])) $url= $_POST['video_url'];
elseif (isset($_GET['video_url'])) $url = $_GET['video_url'];
else $url = null;
if ($url != null) {
    parse_str( parse_url( $url, PHP_URL_QUERY ), $my_array_of_vars );
    $video_id = $my_array_of_vars['v'];
    require_once ('unirest/Unirest.php');
    $response = Unirest\Request::get("https://ytapi.p.mashape.com/mp3?id=".$video_id,
        array(
            "X-Mashape-Key" => "eu3tTuvAS7mshdiKlbOo1PnqCkgjp1vAXcojsnmgR6OKvjMYA3",
            "Accept" => "application/json"
        )
    );
    header("Location: ".$response->body[0]->url);
    die();
}