function Delete_v2($db,$table_name, $where_clause=''){   

  $whereSQL = '';

  if(!empty($where_clause)) {

    if(substr(strtoupper(trim($where_clause)), 0, 5) != 'WHERE') {

      $whereSQL = " WHERE ".$where_clause;

    } else {

      $whereSQL = " ".trim($where_clause);

    }

  }

  $sql = "DELETE FROM `".$table_name."` ".$whereSQL;

  $dt['sql']=$sql.";";

  if(mysqli_query($db,$sql)) {

    $dt['result']="Success";

  } else {

    $dt['result']="Error";    

  }  

  return json_encode($dt);

}