Problema con DOMDocument e immagini

[fermat]

ok, ho fatto usando curl:

$url = '.............';

$ch = curl_init();
$timeout = 5;
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$html = curl_exec($ch);

$dom = new DOMDocument();
libxml_use_internal_errors(true);
$dom->loadHTML($html);
$imgs = $dom->getElementsByTagName('img');

if ($imgs->length > 0) {
    foreach ($imgs as $img) {
        echo $img->getAttribute('src');
    }
} else {
    echo 'Nessun elemento trovato!';
} 

evidentemten DOMDocument non accetta url!