<?php
/* * *********************************************
* @类名: page
* @参数: $myde_total - 总记录数
* $myde_size - 一页显示的记录数
* $myde_page - 当前页
* $myde_url - 获取当前的url
* @功能: 分页实现
* @作者: 宋海阁
*/
class page{
private $myde_total; //总记录数
private $myde_size; //一页显示的记录数
private $myde_page; //当前页
private $myde_page_count; //总页数
private $myde_i; //起头页数
private $myde_en; //结尾页数
private $myde_url; //获取当前的url
/*
* $show_pages
* 页面显示的格式，显示链接的页数为2*$show_pages+1。
* 如$show_pages=2那么页面上显示就是[首页] [上页] 1 2 3 4 5 [下页] [尾页]
*/
private $show_pages;
public function __construct($myde_total = 1, $myde_size = 1, $myde_page = 1, $myde_url, $show_pages = 2) {
$this->myde_total = $this->numeric($myde_total);
$this->myde_size = $this->numeric($myde_size);
$this->myde_page = $this->numeric($myde_page);
$this->myde_page_count = ceil($this->myde_total / $this->myde_size);
$this->myde_url = $myde_url;
if ($this->myde_total < 0)
$this->myde_total = 0;
if ($this->myde_page < 1)
$this->myde_page = 1;
if ($this->myde_page_count < 1)
$this->myde_page_count = 1;
if ($this->myde_page > $this->myde_page_count)
$this->myde_page = $this->myde_page_count;
$this->limit = ($this->myde_page - 1) * $this->myde_size;
$this->myde_i = $this->myde_page - $show_pages;
$this->myde_en = $this->myde_page + $show_pages;
if ($this->myde_i < 1) {
$this->myde_en = $this->myde_en + (1 - $this->myde_i);
$this->myde_i = 1;
}
if ($this->myde_en > $this->myde_page_count) {
$this->myde_i = $this->myde_i - ($this->myde_en - $this->myde_page_count);
$this->myde_en = $this->myde_page_count;
}
if ($this->myde_i < 1)
$this->myde_i = 1;
}
//检测是否为数字
private function numeric($num) {
if (strlen($num)) {
if (!preg_match("/^[0-9]+$/", $num)) {
$num = 1;
} else {
$num = substr($num, 0, 11);
}
} else {
$num = 1;
}
return $num;
}
//地址替换
private function page_replace($page) {
return str_replace("{page}", $page, $this->myde_url);
}
//首页
private function myde_home() {
if ($this->myde_page != 1) {
return "<a href=‘" . $this->page_replace(1) . "‘ title=‘首页‘>首页</a>";
} else {
return "<p>首页</p>";
}
}
//上一页
private function myde_prev() {
if ($this->myde_page != 1) {
return "<a href=‘" . $this->page_replace($this->myde_page - 1) . "‘ title=‘上一页‘>上一页</a>";
} else {
return "<p>上一页</p>";
}
}
//下一页
private function myde_next() {
if ($this->myde_page != $this->myde_page_count) {
return "<a href=‘" . $this->page_replace($this->myde_page + 1) . "‘ title=‘下一页‘>下一页</a>";
} else {
return"<p>下一页</p>";
}
}
//尾页
private function myde_last() {
if ($this->myde_page != $this->myde_page_count) {
return "<a href=‘" . $this->page_replace($this->myde_page_count) . "‘ title=‘尾页‘>尾页</a>";
} else {
return "<p>尾页</p>";
}
}
//输出
public function myde_write($id = ‘page‘) {
$str = "<div id=" . $id . ">";
$str.=$this->myde_home();
$str.=$this->myde_prev();
if ($this->myde_i > 1) {
$str.="<p class=‘pageEllipsis‘>...</p>";
}
for ($i = $this->myde_i; $i <= $this->myde_en; $i++) {
if ($i == $this->myde_page) {
$str.="<a href=‘" . $this->page_replace($i) . "‘ title=‘第" . $i . "页‘ class=‘cur‘>$i</a>";
} else {
$str.="<a href=‘" . $this->page_replace($i) . "‘ title=‘第" . $i . "页‘>$i</a>";
}
}
if ($this->myde_en < $this->myde_page_count) {
$str.="<p class=‘pageEllipsis‘>...</p>";
}
$str.=$this->myde_next();
$str.=$this->myde_last();
$str.="<p class=‘pageRemark‘>共<b>" . $this->myde_page_count .
"</b>页<b>" . $this->myde_total . "</b>条数据</p>";
$str.="</div>";
return $str;
}
}
?>
调用方法
<?php
include ‘db.php‘;
require_once(‘page.class.php‘); //分页类
$db=new DB();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<link href="fy.css" rel="stylesheet" type="text/css" />
</head>
<body>
<center>
<table width="500px;" border="1px">
<tr>
<th>id号</th>
<th>类别名称</th>
<th>父id</th>
<th>路径</th>
</tr>
<?php
$sql="select count(*) from infotype";
$select="select * from infotype";
$showrow = 2; //一页显示的行数
$curpage = empty($_GET[‘page‘]) ? 1 : $_GET[‘page‘]; //当前的页,还应该处理非数字的情况
$url = $_SERVER[‘SCRIPT_NAME‘].‘?page={page}‘; //分页地址，如果有检索条件 ="?page={page}&q=".$_GET[‘q‘]
$db=new DB();
$total =$db->queryObj($sql); //记录总条数
if (!empty($_GET[‘page‘]) && $total != 0 && $curpage > ceil($total / $showrow))
$curpage = ceil($total / $showrow); //当前页数大于最后页数，取最后一页
//获取数据
$select.= " limit " .(($curpage - 1) * $showrow ). ",".$showrow."";
//var_dump($q);
$res = $db->queryRows($select);
if($res>0)
{
foreach($res as $v)
{
?>
<tr><td><?php echo $v[‘id‘];?></td><td><?php echo $v[‘name‘];?></td><td><?php echo $v[‘pid‘];?></td><td><?php echo $v[‘path‘];?></td></tr>
<?php
}
}
else
{ echo "没有该信息";
}
?>
</table>
<div style="clear:both"></div>
<?php
if ($total > $showrow) { //总记录数大于每页显示数，显示分页
$page = new page($total, $showrow, $curpage, $url, 2);
echo $page->myde_write();
}
?>
</center>
</body>
</html>