获取HTTP POST请求参数

名称:	获取系统根目录
函数名:	plug_set_post(“name”)
说明:	如访问name=ceshi
返回说明:	返回:ceshi

        $param_id = plug_set_post('id');
        $param_txt = plug_set_post('txt');
        $param_field = plug_set_post('field');
        $param_sql = "UPDATE `bs_php_language` SET `{$param_field}` = '{$param_txt}' WHERE `lang_id` = '{$param_id}';";
        $this->intelligence_db->intelligence_Bsphp_my_query($param_sql);
        print_json(array(
            'code' => 1,
            'msg' => '修改完毕！',
            'count' => 0,
            'data' => ''
        ));