Change the paging mode based on the original

My system is an audio website, and all audio data is written in one field. If there are thousands of pieces! Without pagination, the website will basically freeze when you open it. Share the front-end and back-end code with everyone, hope you can learn the functions
后台代码//分页开始<br>         $rs = M('Vod');<br>         $user = array();<br>         $user['q_islock'] = $_REQUEST['q_islock'];<br>         $selectType = $_REQUEST['q_selectType'];<br>         $wd = urldecode(trim($_REQUEST['wd']));<br>         $user['selectType'] = $selectType;<br>         $user['wd'] = $wd;<br>         $user['p'] = '';<br> <br>         if ($user['q_islock'] == 1) {<br>             $where['islock'] = array('eq', 1);<br>         }<br>         else if ($user['q_islock'] == 2) {<br>             $where['islock'] = array('eq', 0);<br>         }<br> <br>         if (!empty($selectType) && !empty($wd)) {<br>             $where[$selectType] = array('like', '%' . $wd . '%');<br>         }<br>         $ida=$_GET['id'];<br>         $vod_url=$rs->where("vod_id=$ida")->getfield("vod_url");<br>         $count=(substr_count($vod_url,"$")-3)/2;<br>         $limit = C('url_num_admin');<br>         $totalpages = ceil($count / $limit);<br>         $currentpage = (!empty($_GET['p']) ? intval($_GET['p']) : 1);<br>         $currentpage = get_maxpage($currentpage, $totalpages);<br>         $pageurl = U('/read-id-'.$ida, $user, false, false) . '{!page!}' . C('url_html_suffix');<br>         $user['p'] = $currentpage;<br>         $_SESSION['user_jumpurl'] = U('/read-id-'.$ida, $user) . C('url_html_suffix');<br>         $page = '共' . $count . '个 当前:' . $currentpage . '/' . $totalpages . '页 ' . getpage($currentpage, $totalpages, 3, $pageurl, 'pagego('' . $pageurl . '',' . $totalpages . ')');<br>         $user['page'] = $page;<br>         $f['currentpage']=$currentpage;<br>         $sq['vod_id']=$ida;<br>         $vod_playlist=$rs->find($ida);<br>         $this->assign($f);<br>         $this->assign($user);<br>         //分页结束模板代码块<php>$fj=($currentpage-1)*20</php><br>                 <volist name="gxlcms_playlist" id="gxlcms"> <br> <if condition="$gxlcms.playname eq ts"><br>         <fflist name="gxlcms['son']" id="gxlcmsson" order="asc" offset="$fj" length='20'><br> <br>                    <li  ><time>更新时间:{$vod_addtime|date='Y-m-d H:i:s',###}</time><i class="icon-play-d"></i><a  href="{$gxlcmsson.playurl}">{$gxlcmsson.playname}</a></li><br>                     </fflist><br>                       <br>                 </if> </volist>