function execute($request,$silencieux=false){
		if ($silencieux==false) {
			$res = mysql_query($request)
			or
			die($request.' -- '.mysql_error().' -- <br/> Request in file : <b>'.debug_backtrace()[0]['file'].'</b><br/> on line <b>'.debug_backtrace()[0]['line']).'</b>';
		}
		else {
			$res = mysql_query($request);
		}
		return $res;
	}