关于qeephp 框架分页函数getPagination存在问题的修改方法

将qeephp\library\db\select.php函数getPagination()中的
           $count = (int)$this->_conn->execute($this->__toString())->fetchOne();
替换为
        if(empty($this->_parts[self::GROUP])){
            $count = (int)$this->_conn->execute($this->__toString())->fetchOne();
        }else{
            $count_ar = $this->_conn->execute($this->__toString())->fetchAll();
            $count = count($count_ar);
        }
原因我只贴出代码前面一段（原版）
    function getPagination()
    {
        $this->_query_params[self::PAGED_QUERY] = true;
    //此属性只是用来 判断是否是获取分页 的
        if (! empty($this->_parts[self::ORDER]))
        {
            $order = $this->_parts[self::ORDER];
            unset($this->_parts[self::ORDER]);
        }//去掉不必须的order参数
        $count = (int)$this->_conn->execute($this->__toString())->fetchOne();
    //以项为重点分析对象见下面,此时sql语句为select COUNT(*) ...,得到COUNT(*)的值，
当sql语句中group by 时，必然只会得到第一个group by 的COUNT(*)值是不对，修改上面已提到！
        $this->_query_params[self::PAGED_QUERY] = false;//关闭分页查询
        if (isset($order))
        {
            $this->_parts[self::ORDER] = $order;
        }...
    }
下面来分析在未关闭分布查询之前，也就是 $this->_query_params[self::PAGED_QUERY] = false;以前的
到数据库查询sql语句是什么？我们来分析__toString()函数得到是什么吧！
 function __toString()
    {
        $sql = array(
            self::SQL_SELECT
        );//sql=array('SELECT')，我们在定义中可以找到
/**
    此时的下面的self::$parts_init值是什么呢？可以找到定义
   protected static $_parts_init = array
    (
        self::DISTINCT => false,//"distinct"=>false,
        self::COLUMNS => array(),//'columns'=>array(),
        self::AGGREGATE => array(),//下面就不写了....
        self::UNION => array(),
        self::FROM => array(),
        self::WHERE => null,
        self::GROUP => array(),
        self::HAVING => null,
        self::ORDER => array(),
        self::LIMIT_COUNT => 1,
        self::LIMIT_OFFSET => null,
        self::LIMIT_QUERY => false,
        self::FOR_UPDATE => false
    );
*/
        foreach (array_keys(self::$_parts_init) as $part)
        {
            if ($part == self::FROM)
            {
                $sql[self::FROM] = '';
            }
            else
            {//我们只看下$part='columns'的情况
                $method = '_render' . ucfirst($part);
                if (method_exists($this, $method))
                {
                    $sql[$part] = $this->$method();
            //此时$sql['columns']=$this->_renderColumns();下面我再看_renderColumns函数吧！
                }
            }
        }

        $sql[self::FROM] = $this->_renderFrom();
        foreach ($sql as $offset => $part)
        {
            if (trim($part) == '')
            {
                unset($sql[$offset]);
            }
        }

        return implode(' ', $sql);
    }
函数 protected function _renderColumns()
    {
        if (empty($this->_parts[self::COLUMNS]))
        {
            return '';
        }

        if ($this->_query_params[self::PAGED_QUERY])//我们可以看到$this->_query_params['paged_query']的作用了
        {
            return 'COUNT(*)';
        }//相当于sql语名为select COUNT(*) ...

        // $this->_parts[self::COLUMNS] 每个元素的格式
        $columns = array();

        foreach ($this->_parts[self::COLUMNS] as $entry)//这是为正常情况下columns处理
        {.....
        }
     }
关于修改后
        if(empty($this->_parts[self::GROUP])){//判断是否添加了group条件，没有执行以前的
            $count = (int)$this->_conn->execute($this->__toString())->fetchOne();
        }else{//有的话，就用下面的，应该很容易理解吧！
            $count_ar = $this->_conn->execute($this->__toString())->fetchAll();
            $count = count($count_ar);
        }