public static function Has($sKey){
            $oThis = self::CreateInstanceIfNotExists();
            
            if($oThis->bStarted)
                return array_key_exists($sKey, $_SESSION[$oThis->sName]);
            else
                return false;
        }
public static function Has($sKey){
            $oThis = self::CreateInstanceIfNotExists();
            
            if($oThis->bStarted)
                return array_key_exists($sKey, $_SESSION[$oThis->sName]);
            else
                return false;
        }
public static function Has ( $ sKey ) { $ oThis = self :: CreateInstanceIfNotExists ( ) ; if ( $ oThis -> bStarted ) return array_key_exists ( $ sKey , $ _SESSION [ $ oThis -> sName ] ) ; else return false ; }
Function to check existence of record in the session

@static
@param string $sKey Search Key
@return boolean
Function to check existence of record in the session