/**
* Constructs a BSMAvatar instance from a <PHOTO> tag of the vCard
* @param BSMXMLTag link to an instance of BSMXMLTag representing <PHOTO> element of the vCard
*/
public function __construct(XMLTag $photo_tag)
{
$this->tag = $photo_tag;
file_put_contents($this->filename = tempnam(sys_get_temp_dir(), 'xmpp_avatar'), base64_decode($photo_tag->getChildValue('BINVAL')));
//parent::__construct($this->filename);
}
