如何在php中使用htaccess文件重写url

在我的项目中添加。htaccess文件后分页不工作。

分页代码为:

if ($page > 0) {
            $last = $page - 2;
            echo "<a href=" . $this->SITE_URL . "categories/page/$last>Previous</a>";
            echo "<a href=" . $this->SITE_URL . "categories/page/$page>Next</a>";
        } else if ($page == 0) {
            echo "<a href=" . $this->SITE_URL . "categories/page/$page>Next</a>";
        } else if ($left_rec < $rec_limit) {
            $last = $page - 2;
            echo "<a href=" . $this->SITE_URL . "categories/page/$last>Previous</a>";
        }
.htaccess file have
RewriteRule categories category.php
RewriteRule categories/page/(.*)/ category.php?page=$1
RewriteRule categories/page/(.*) category.php?page=$1

当我点击类别链接时，它显示100个类别，url是

但是当我点击下一个链接它将显示100个类别的相同内容，url为

主机名/site1/类别/页面/0