/**     * @desc    多维数组转化为支持curl提交数组     * @author    lytian    2013-06-29     */    public function toPost(array $params = array(), $pre = '')    {        $result = array();        foreach ($params as $key => $val)        {                if (is_array($val))                {                    $subPre = ($pre=="") ? $key : $pre . "[" . $key . "]";                    //$pre = "[" . $key . "]";                    $result = array_merge($result, toPost($val, $subPre));                                    }                else                {                    $result[$pre."[".$key."]"] = $val;                }        }        return $result;    }