检查codeigniter查询错误，而不是向用户显示

在application / config / database.php中设置

// suppress error output to the screen$db['default']['db_debug'] = FALSE;

在模型或控制器中：

// try the select.$dbRet = $this->db->select($table, $dataArray);// select has had some problem.if( !$dbRet ){   $errNo   = $this->db->_error_number();   $errMess = $this->db->_error_message();   // Do something with the error message or just show_404();}