class dbsql {
  function selectquery() {   

  /*in $this->qryresult the problem start. it displays
    illegal operation and will be shutdown ...*/

  $this->qryresult=ibase_query($this->dbh,$this->dbsqlstmt);

   if($this->qryresult) {

     $this->count=0;   //initializes back to zero
     while($rec_qry=ibase_fetch_object($this->qryresult)) {

        $this->rec_result[$this->count++]= $rec_qry;      
     }
      return true;
   }
  return false;
}