分页Model

<?php
namespace Admin\Model;

use Think\Model;

<?php
class PageModel extends Model
{
    /*
     *此函数分页函数。传入表名和当前页，返回 总页数，总条数 底标的分页的数组
    */
    public function index($tableName, $page, $where, $prefix_page, $sql = '', $add_one_flag = false)
    {
        $tables = M($tableName);
        //第一返回总条数
        if ($sql) {
            $tmp = $tables->query($sql);
            $data['count'] = $tmp[0]['count_num'];
        } else {
            if ($where) {
                $data['count'] = $tables->where($where)->count();
            } else {
                $data['count'] = $tables->count();
            }
        }
        if ($add_one_flag === true) {
            $data['count'] += 1;
        }

        $page_step = C('PAGE_NORMAL_COUNT');
        //第二返回总页数
        $data['page_all'] = (int) ceil($data['count'] / $page_step);

        //第三返回底标的分页数组
        $page_start = $page - 2;
        if ($data['page_all'] > 5) {
            if ($page_start <= 0) {
                $page_start = 1;
                $page_end = 5;
            } else {
                $page_end = $page + 2;
                if ($page_end >= $data['page_all']) {
                    $page_end = $data['page_all'];
                    $page_start = $page_end - 4;
                }
            }
        } else {
            $page_start = 1;
            $page_end = $data['page_all'];
        }
        $data['page_start'] = $page_start;
        $data['page_end'] = $page_end;
        //第四返回当前页
        $data['page'] = $page;
        //第五 返回上一页和下一页
        $prev_page = $page - 1;
        if ($prev_page <= 0) {
            $prev_page = 1;
        }
        $next_page = $page + 1;
        if ($next_page >= $data['page_all']) {
            $next_page = $data['page_all'];
        }

        $data['prev_page'] = $prev_page;
        $data['next_page'] = $next_page;
        $data['prefix_page'] = $prefix_page;

        // 自动获取参数，避免分页丢失
        $query_string = $_SERVER['QUERY_STRING'];
        // setlog($query_string);
        if ($query_string) {
            if (strpos($query_string, 'page') === false) {
                // setlog('111');
                $data['tail'] = '&' . $query_string;
            } else {
                // setlog('222');
                // 去掉page
                $pos = strpos($query_string, '&');
                if ($pos === false) {
                    $data['tail'] = '';
                    // setlog('333');
                } else {
                    // setlog('444');
                    $my_query_string = substr($query_string, $pos);
                    $arr = explode('&',$my_query_string);
                    $new_query_string = '';
                    foreach($arr as $k => &$v) {
                        if (strpos($v, 'page') === false && $v) {
                            $new_query_string .= '&'.$v;
                        }
                    }
                    // setlog($new_query_string);
                    $data['tail'] = $new_query_string;
                }
            }
        }
        return $data;
    }
}

php

$allPage = $model->index('room', $page, $where);
$this->assign('allPage', $allPage);

html

<div class="layui-card-body ">
    <div class="page">
        <div>
            <a href="__ACTION__?page=1{$allPage['prefix_page']}{$allPage.tail}">首页</a>
            <a class="prev" href="__ACTION__?page={$allPage['prev_page']}{$allPage['prefix_page']}{$allPage.tail}">上一页</a>
            <php> for ($i = $allPage['page_start']; $i <= $allPage['page_end']; $i++) {
                if ($i == $allPage['page']) { </php>
            <span class="current">
                <php> echo $i; </php>
            </span>
            <php> } else { </php>
            <a class="num" href="__ACTION__?page=<php>echo $i;</php>{$allPage['prefix_page']}{$allPage.tail}">
                <php> echo $i; </php>
            </a>
            <?php
                     }
              }
        ?>
            <a class="next" href="__ACTION__?page={$allPage['next_page']}{$allPage['prefix_page']}{$allPage.tail}">下一页</a>
            <a href="__ACTION__?page={$allPage['page_all']}{$allPage['prefix_page']}{$allPage.tail}">尾页</a>
        </div>
    </div>
</div>