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
}

<?php
include "../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();