PHP script to find Apple Touch Icon

I have a PHP script that crawls a page and extracts the first image in the page, this isn't working too well, and I'd rather get no results than a completely ambiguous picture, so is it possible to modify the following script to extract the universal URL of the first link rel="apple-touch-icon" or link rel="apple-touch-icon-precomposed"?

function get($a,$b,$c)
{ // Gets a string between 2 strings
$y = explode($b,$a);
$x = explode($c,$y[1]);
return $x[0];

<div class="addSitetitle"><?php echo get(file_get_contents(''.$_REQUEST['url'].''), "<title>", "</title"); ?></div>
<div class="addSitedescription"><?php echo ($url["description"]); ?></div>
<div class="addSitekeywords"><?php echo ($url["keywords"]); ?></div>
<div class="addSitecopyright"><?php echo ($url["copyright"]); ?></div>
<div class="addSiteimage"><img <?php echo get(file_get_contents(''.$_REQUEST['url'].''), "<img", "/>"); ?> /></div>

Edited to include get function.


using this, you can obtain links to the images with code such as:

$html = file_get_html($url);
$img = $html->find('img[rel=apple-touch-icon]');
echo $img->href;

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