/**

     * @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;

    }