本文实例讲述了PHP分页显示的方法。分享给大家供大家参考,具体如下:
- <?php
- header("content-type:text/html;charset=utf-8");
- $currentpage = 1;
- if(isset($_GET['page']))
- $currentpage = $_GET['page'];
- //连接数据库
- $link = mysql_connect("localhost","root","") or die('连接失败');
- mysql_select_db('myschool');
- mysql_query('set names utf8');
- $sql ="SELECT count(*) as 'count' from student";//查询记录的sql语句
- $result = mysql_query($sql);
- $arr = mysql_fetch_array($result);
- $count = $arr['count'];
- $pagesize = 3;
- $pages = ceil($count/$pagesize);//共多少页
- $prepage = $currentpage -1;
- if($prepage<=0)
- $prepage=1;
- $nextpage = $currentpage+1;
- if($nextpage >= $pages){
- $nextpage = $pages;
- }
- $start =($currentpage-1) * $pagesize;//起始位置
- $sql = "SELECT * from student limit $start,$pagesize";
- echo $sql;
- // $sql = "select * from student";
- $result = mysql_query($sql);
- ?>
- <!-- html部分 -->
- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <title>Document</title>
- </head>
- <body>
- <table border="1">
- <tr>
- <td>学号</td>
- <td>姓名</td>
- <td>性别</td>
- <td>年龄</td>
- </tr>
- <?php while($arr=mysql_fetch_array($result)){ ?>
- <td><?php echo $arr['number']; ?></td>
- <td><?php echo $arr['name']; ?></td>
- <td><?php echo $arr['sex']; ?></td>
- <td><?php echo $arr['age']; ?></td>
- </tr> //Vevb.com
- <?php } ?>
- </table>
- <a href="<?php echo $_SERVER['PHP_SELF'].'?page='.$prepage; ?>" rel="external nofollow" >上一页</a> <a href="<?php echo $_SERVER['PHP_SELF'].'?page='.$nextpage; ?>" rel="external nofollow" >下一页</a>
- </body>
- </html>
注:当一个文件中有php和html两种时,php文件必须有结束标记
附:php通用分页类与用法:
Page.class.php文件:
- <?php
- /**
- * 分页类
- *
- * 调用方式:
- * $p=new Page(总条数,显示页数,当前页码,每页显示条数,[链接]);
- * print_r($p->getPages()); //生成一个页码数组(键为页码,值为链接)
- * echo $p->showPages(1); //生成一个页码样式(可添加自定义样式)
- *
- */
- /*
- 总条数,需要显示的页数,当前页,每页显示的条数,连接
- 生成一个一维数组,键为页码 值为连接
- 返回一个生成好样式的页码(并且可以根据自己需要添加样式)
- 默认样式 共45条记录,每页显示10条,当前第1/4页 [首页] [上页] [1] [2] [3] .. [下页] [尾页]
- */
- class Page{
- protected $count; //总条数
- protected $showPages; //需要显示的页数
- protected $countPages; //总页数
- protected $currPage; //当前页
- protected $subPages; //每页显示条数
- protected $href; //连接
- protected $page_arr=array(); //保存生成的页码 键页码 值为连接
- /**
- * __construct 构造函数(获取分页所需参数)
- * @param int $count 总条数
- * @param int $showPages 显示页数
- * @param int $currPage 当前页数
- * @param int $subPages 每页显示数量
- * @param string $href 连接(不设置则获取当前URL)
- */
- public function __construct($count,$showPages,$currPage,$subPages,$href=''){
- $this->count=$count;
- $this->showPages=$showPages;
- $this->currPage=$currPage;
- $this->subPages=$subPages;
- //如果链接没有设置则获取当前连接
- if(emptyempty($href)){
- $this->href=htmlentities($_SERVER['PHP_SELF']);
- }else{
- $this->href=$href;
- }
- $this->construct_Pages();
- }
- /**
- * getPages 返回页码数组
- * @return array 一维数组 键为页码 值为链接
- */
- public function getPages(){
- return $this->page_arr;
- }
- /**
- * showPages 返回生成好的页码
- * @param int $style 样式
- * @return string 生成好的页码
- */
- public function showPages($style=1){
- $func='pageStyle'.$style;
- return $this->$func();
- }
- /**
- * pageStyle1 分页样式(可参照这个添加自定义样式 例如pageStyle2())
- * 样式 共45条记录,每页显示10条,当前第1/4页 [首页] [上页] [1] [2] [3] .. [下页] [尾页]
- * @return string
- */
- protected function pageStyle1(){
- /* 构造普通模式的分页
- 共4523条记录,每页显示10条,当前第1/453页 [首页] [上页] [1] [2] [3] .. [下页] [尾页]
- */
- $pageStr='共'.$this->count.'条记录,每页显示'.$this->subPages.'条';
- $pageStr.='当前第'.$this->currPage.'/'.$this->countPages.'页 ';
- $_GET['page'] = 1;
- $pageStr.='<span>[<a href="'.$this->href.'?'.http_build_query($_GET).'" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >首页</a>] </span>';
- //如果当前页不是第一页就显示上页
- if($this->currPage>1){
- $_GET['page'] = $this->currPage-1;
- $pageStr.='<span>[<a href="'.$this->href.'?'.http_build_query($_GET).'" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >上页</a>] </span>';
- }
- foreach ($this->page_arr as $k => $v) {
- $_GET['page'] = $k;
- $pageStr.='<span>[<a href="'.$v.'" rel="external nofollow" >'.$k.'</a>] </span>';
- }
- //如果当前页小于总页数就显示下一页
- if($this->currPage<$this->countPages){
- $_GET['page'] = $this->currPage+1;
- $pageStr.='<span>[<a href="'.$this->href.'?'.http_build_query($_GET).'" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >下页</a>] </span>';
- }
- $_GET['page'] = $this->countPages;
- $pageStr.='<span>[<a href="'.$this->href.'?'.http_build_query($_GET).'" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >尾页</a>] </span>';
- return $pageStr;
- }
- /**
- * construct_Pages 生成页码数组
- * 键为页码,值为链接
- * $this->page_arr=Array(
- * [1] => index.php?page=1
- * [2] => index.php?page=2
- * [3] => index.php?page=3
- * ......)
- */
- protected function construct_Pages(){
- //计算总页数
- $this->countPages=ceil($this->count/$this->subPages);
- //根据当前页计算前后页数
- $leftPage_num=floor($this->showPages/2);
- $rightPage_num=$this->showPages-$leftPage_num;
- //左边显示数为当前页减左边该显示的数 例如总显示7页 当前页是5 左边最小为5-3 右边为5+3
- $left=$this->currPage-$leftPage_num;
- $left=max($left,1); //左边最小不能小于1
- $right=$left+$this->showPages-1; //左边加显示页数减1就是右边显示数
- $right=min($right,$this->countPages); //右边最大不能大于总页数
- $left=max($right-$this->showPages+1,1); //确定右边再计算左边,必须二次计算
- for ($i=$left; $i <= $right; $i++) {
- $_GET['page'] = $i;
- $this->page_arr[$i]=$this->href.'?'.http_build_query($_GET);
- }
- }
- }
- ?>
用法示例demo.php:
- /**
- * demo
- */
- header("content-type:text/html;charset=utf8");
- include('Page.class.php'); //引入类
- //$p=new Page(总条数,显示页数,当前页码,每页显示条数,[链接]);
- //连接不设置则为当前链接
- $page=isset($_GET['page']) ? $_GET['page'] : 1;
- $p=new Page(100,4,$page,8);
- //生成一个页码数组(键为页码,值为链接)
- echo "<pre>";
- print_r($p->getPages());
- //样式 共45条记录,每页显示10条,当前第1/4页 [首页] [上页] [1] [2] [3] .. [下页] [尾页]
- echo $p->showPages(1);
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