PHP搜索结果分页 - PHP search results pagination

PHP search results pagination

本文关键字：分页搜索结果 PHP | 更新日期: 2023-09-27

我正在用mysql建立一个基于php的搜索。

但是我遇到了这个问题:我有一个很长很重的(mysql服务器上)查询搜索。

要对结果进行分页，我需要以下数据:

所有结果的计数(不限制，所以我知道有多少数字显示)
```
SELECT COUNT(*) as count FROM table WHERE col="val"
```

有限的结果-我将这些显示给用户

SELECT * FROM table WHERE col="val" LIMIT 20, 10

我如何避免对上面提到的2个需求有2个单独的查询?

注意: 为了避免"你的查询有多重?"，这是我的真实where条件:

    SELECT *, 
    (1000 * 6371 * acos( cos( radians(42.6051862) ) * cos( radians( project_lat ) ) * cos( radians( project_lng ) - radians(23.037836800000036) ) + sin( radians(42.6051862) ) * sin( radians( project_lat ) ) ) ) AS distance
    FROM `projects` 
    JOIN `subcategories` ON `projects`.`subcat_id` = `subcategories`.`subcat_id` 
    JOIN `categories` ON `subcategories`.`cat_id` = `categories`.`cat_id`
    JOIN `project_images` ON `projects`.`project_id` = `project_images`.`project_id` 
    WHERE `projects`.`subcat_id` = 618 
    AND `project_start` < '2016-10-30' 
    AND `project_start` > '2016-10-14' 
    AND `project_price` > 123 
    AND `project_price` < 233 
    AND `project_currency` = 'BTN' 
    AND `project_approved` = 1 
    AND MATCH (project_title, project_description) AGAINST ('test') 
    GROUP BY `projects`.`project_id` 
    HAVING `distance` < 7400

使用sql_calc_found_rows

SELECT SQL_CALC_FOUND_ROWS * FROM table WHERE id > 100 LIMIT 10;
SELECT FOUND_ROWS();