本文实例讲述了PHP封装的分页类与简单用法。分享给大家供大家参考,具体如下:
分页类的封装如下:
page.php
<?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
}
一个调用分页类的例子
userlist.php
<?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();
运行结果:
数据库的封装之前写过,这里不在赘述:
PHP封装mysqli基于面向对象的mysql数据库操作类