eccoti servito con "classe"

codice:
$Stringa="2008-07-08T11:00:19Z";
eregi("^([0-9]{4})-([0-9]{2})-([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})Z$",$Stringa,$AD);
echo "data: ".(int)$AD[3]."-".(int)$AD[2]."-".(int)$AD[1]."   ora: ".(int)$AD[4]."-".$AD[5]."-".$AD[6];