Php 从子查询结果中获取最大值

我有一个查询，它连接3个表并返回按页码排序的结果，这样我一次只能查看一个页面及其通过数组的输出

这是我的问题

select wo.*,
   (select count(distinct order)
    from (SELECT *
          FROM `movements` LEFT JOIN
               `classes`
               ON `movements`.`class_id` = `classes`.`class_id` LEFT JOIN
               `clients`
               ON `movements`.`class_id` = `clients`.`class_id`
          WHERE `classes`.`class_id` = '$class_id' 
         ) wo2
    where wo2.order <= wo.order
   ) as pagenum
from (SELECT *
  FROM `movements` LEFT JOIN
       `classes`
        ON `movements`.`class_id` = `classes`.`class_id` LEFT JOIN
        `clients`
       ON `movements`.`class_id` = `clients`.`class_id`
   WHERE `classes`.`class_id` = '$class_id' 
  ) wo
order by pagenum

还是有更好的方法来实现这一点

下面是此查询结果的屏幕截图。我现在有下一个和上一个链接，当我在这些结果中到达查询页面5的末尾时，会将用户从一页转到另一页。我希望PHP不再提供转到下一页的选项。因此，我必须以某种方式获得每个查询的MAXpagenum的值

---

可以通过包含另一个相关子查询来获取maxpage num：

select wo.*,
       (select count(distinct order)
        from (SELECT *
              FROM `movements` LEFT JOIN
                   `classes`
                   ON `movements`.`class_id` = `classes`.`class_id` LEFT JOIN
                   `clients`
                   ON `movements`.`class_id` = `clients`.`class_id`
                   WHERE `classes`.`class_id` = '$class_id'
             ) wo2
        where wo2.order <= wo.order
       ) as pagenum,
       (select count(distinct order)
        from (SELECT *
              FROM `movements` LEFT JOIN
                   `classes`
                   ON `movements`.`class_id` = `classes`.`class_id` LEFT JOIN
                   `clients`
                   ON `movements`.`class_id` = `clients`.`class_id`
                   WHERE `classes`.`class_id` = '$class_id'
             ) wo2
       ) as maxpages          
 from (SELECT *
       FROM `movements` LEFT JOIN
            `classes`
            ON `movements`.`class_id` = `classes`.`class_id` LEFT JOIN
            `clients`
            ON `movements`.`class_id` = `clients`.`class_id`
       WHERE `classes`.`class_id` = '$class_id'
      ) wo
order by pagenum 

select wo.*,
       (select count(distinct order)
        from (SELECT *
              FROM `movements` LEFT JOIN
                   `classes`
                   ON `movements`.`class_id` = `classes`.`class_id` LEFT JOIN
                   `clients`
                   ON `movements`.`class_id` = `clients`.`class_id`
                   WHERE `classes`.`class_id` = '$class_id'
             ) wo2
        where wo2.order <= wo.order
       ) as pagenum,
       (select count(distinct order)
        from (SELECT *
              FROM `movements` LEFT JOIN
                   `classes`
                   ON `movements`.`class_id` = `classes`.`class_id` LEFT JOIN
                   `clients`
                   ON `movements`.`class_id` = `clients`.`class_id`
                   WHERE `classes`.`class_id` = '$class_id'
             ) wo2
       ) as maxpages          
 from (SELECT *
       FROM `movements` LEFT JOIN
            `classes`
            ON `movements`.`class_id` = `classes`.`class_id` LEFT JOIN
            `clients`
            ON `movements`.`class_id` = `clients`.`class_id`
       WHERE `classes`.`class_id` = '$class_id'
      ) wo
order by pagenum