$stringa = "[utube]http://www.youtube.com/watch?v=oqZL87QjkGs [/utube]";
$stringa = substr($stringa,0,-8);
$url= substr($stringa,7);
$stringa = "[utube]http://www.youtube.com/watch?v=oqZL87QjkGs [/utube]";
$stringa = substr($stringa,0,-8);
$url= substr($stringa,7);