PHP封装的分页类与简单用法示例

<?php//showPage(页号，总页数，分隔符)function showPage($page,$totalPage,$sep=" "){  $url = $_SERVER ['PHP_SELF'];      //获取当前路径  $index = ($page == 1) ? "首页" : "<a href='{$url}?page=1'>首页</a>";  $last = ($page == $totalPage) ? "尾页" : "<a href='{$url}?page={$totalPage}'>尾页</a>";  $prevPage=($page>=1)?$page-1:1;  $nextPage=($page>=$totalPage)?$totalPage:$page+1;  $prev = ($page == 1) ? "上一页" : "<a href='{$url}?page={$prevPage}'>上一页</a>";  $next = ($page == $totalPage) ? "下一页" : "<a href='{$url}?page={$nextPage}'>下一页</a>";  $str = "总共{$totalPage}页/当前是第{$page}页";  $p="";  for($i = 1; $i <= $totalPage; $i ++) {    //当前页无连接    if ($page == $i) {      $p .= "[{$i}]";    } else {      $p .= "<a href='{$url}?page={$i}'>[{$i}]</a>";    }  }  $pageStr=$str.$sep . $index .$sep. $prev.$sep . $p.$sep . $next.$sep . $last;  return $pageStr;  //返回分页字符串}

<?phpinclude "../mysql.php";include "../page.php";//连接数据库$conn=new Mysql();//$pageSize=2;    //每页显示的记录数$sql="select * from user;";$totalRows=$conn->getResultNum($sql);  //总记录数$totalPage=ceil($totalRows/$pageSize); //总页数$page=isset($_REQUEST['page'])?(int)$_REQUEST['page']:1;//当前页数if($page<1||$page==null||!is_numeric($page)){  $page=1;}if($page>=$totalPage)$page=$totalPage;$offset=($page-1)*$pageSize;$sql="select * from user limit {$offset},{$pageSize}";$result=$conn->sql($sql);echo "<table style='text-align: center'>";echo "<tr><td>用户名</td><td>密码</td><td>性别</td><td>邮箱</td></tr>";foreach ($result as $k=>$v){  echo "<tr><td>{$v['name']}</td>";  echo "<td>"."{$v['password']}"."</td>";  echo "<td>{$v['sex']}</td>";  echo "<td>{$v['email']}</td></tr>";}echo "</table>";echo showPage($page,$totalPage);    //输出页码链接echo"<hr/>";//关闭数据库$conn->close();