public function getList($field)
    {
        $this->_cols_str = ' '.self::_quote($field).' ';
        $this->_buildQuery();
        $this->_execute();

        return $this->_pdoSt->fetchAll(PDO::FETCH_COLUMN, 0);
    }
public function getList($field)
    {
        $this->_cols_str = ' '.self::_quote($field).' ';
        $this->_buildQuery();
        $this->_execute();

        return $this->_pdoSt->fetchAll(PDO::FETCH_COLUMN, 0);
    }
public function getList ( $ field ) { $ this -> _cols_str = ' ' . self :: _quote ( $ field ) . ' ' ; $ this -> _buildQuery ( ) ; $ this -> _execute ( ) ; return $ this -> _pdoSt -> fetchAll ( PDO :: FETCH_COLUMN , 0 ) ; }
get field list

@param  string $field
@return  array
@throws  \PDOException
get field list