php页面防重复提交方法总结

        $("#submit").attr('disabled','true');
         $("#submit").val("正在提交，请稍等");

      $('#submit ').removeAttr('disabled');
      $("#submit ").val("确定提交");

function checkRepeatSubmit($uniqueid = '', $expire = 30) {

        $uniqueid = empty($uniqueid) ? Yii::app()->user->id . Yii::app()->user->name . Yii::app()->user->mihome : $uniqueid;
        $token = md5("wms_check_repeat" . $uniqueid);

        $time = time();

        if (isset($_SESSION['token']) && !empty($_SESSION['token']) && $_SESSION['token'] == $token && ($time - $_SESSION['expire_time'] < $expire)) {

            return false;
        } else {

            $_SESSION['token'] = $token;
            $_SESSION['expire_time'] = $time;
            //session写入的时候会等待整个页面加载完成，用此函数可以立即写入
            session_write_close();
            return true;
        }
    }

 //删除存入的值

   function cancelRepeatSubmit() {

        unset($_SESSION['token']);
        unset($_SESSION['expire_time']);
    }

 /
     第二种方案
     1、产生token，并存在session中
     2、随页面生成
     3、提交页面与session进行比对，成功后对session进行销毁
     4、第二次提交则不存在这个值而报错
     @param type $uniqueid
     @return type
     /
    function createToken($uniqueid) {

        $uniqueid = empty($uniqueid) ? Yii::app()->user->id . Yii::app()->user->name . Yii::app()->user->mihome : $uniqueid;
        $token = md5("wms_check2_repeat" . $uniqueid);
        $_SESSION['form_token'] = $token;

       ​session_write_close();

        return $token;
    }

    function checkToken($token) {

        if (!isset($_SESSION['form_token']) || empty($_SESSION['form_token']) || $_SESSION['form_token'] != $token) {
            return false;
        } else {
            unset($_SESSION['form_token']);
            return true;
        }
    }