PHP Soundcloud Downloader V0.9

<?php

set_time_limit(0);
//error_reporting(0);

function get_title($soundcloud_link, $data) {
    $doc=new DOMDocument();
    $doc->loadHTML($data);
    $xml=simplexml_import_dom($doc);

    $title=$xml->xpath('//em');
    return $title[0];
}

function get_id($soundcloud_link, $data) {
    $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;
}

function savefile($id, $title) {
    $dir = "files";

    $file = file_get_contents($id);

    $thetitle = "";

    $titlelen = strlen($title) - 2;

    $thetitle = substr($title, 1, $titlelen);

    $thetitle = str_replace(" ", "_", $thetitle);

    $filename = $dir . "/" . $thetitle . ".mp3";

    file_put_contents("$filename", $file);

    header('Pragma: public');
    header('Expires: 0');
    header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
    header('Cache-Control: public');
    header('Content-type: application/force-download');
    header('Content-Disposition: attachment; filename='.basename($filename).";" );
    header("Content-Transfer-Encoding: binary");
    header('Content-Length: '.filesize("$filename"));
    readfile("$filename");

}

if ( $_POST ) {
    $soundcloud_link = $_POST['l'];

    $data = file_get_contents($soundcloud_link);

    $id = get_id($soundcloud_link,$data);
    $title = get_title($soundcloud_link,$data);


    savefile($id, $title);
} else {
    print <<<SOUND_FORM
<form method="post" ">

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

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

?>