PHP Soundcloud Downloader V0.1

<?php

error_reporting(0);

function get_id($soundcloud_link) {
    $data = file_get_contents($soundcloud_link);

    $doc=new DOMDocument();
    $doc->loadHTML($data);
    $xml=simplexml_import_dom($doc);
    $images=$xml->xpath('//img');

    foreach ($images as $img) {
        if ($img['class'] == "waveform") {
            $final_id = $img['src'];
            break;
        }
    }

    $final_id = end(explode('/', $final_id));
    $final_id = current(explode('_', $final_id));

    return "http://media.soundcloud.com/stream/" . $final_id;
}

if ( $_POST ) {
    $file = get_id($_POST['l']);
    print "<a href=\"$file\"> Right-Click & Save Link as...</a>";
} else {
    print <<<SOUND_FORM
<form action="soundcloud.php" method="post" onsubmit="return valid2ate()">

    <label for="name">Soundcloud Link: </label><br />
    <input name="l" id="l" type="text" maxlength="150" value=""/>

    <input type="submit" value="Submit" />
</form>
SOUND_FORM;
}

?>