最近学了PHP的分页，简单的写（模仿）了一个从数据库读取数据然后数据显示在网站上的分页代码。
效果：
![WUAKONANHK403KC64LX[1].png](https://img.php.cn//upload/image/769/894/990/1517391586339129.png "1517391586339129.png")
代码：
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>hsdm</title>
<style type="text/css">
.content
{
height: 300px;
}
.page a{
text-decoration: none;
border:1px solid #aaaadd;
padding:2px 5px 2px 5px;
margin:2px;
}
.page
{
text-align: center;
}
.page span.current
{
border: 1px solid #000099;
background-color:#000099;
padding:2px 5px 2px 5px;
margin:2px;
color:#fff;
font-weight:bold;
}
.page span.disable
{
border: #eee 1px solid;
padding:2px 5px;
margin:2px;
color:#ddd;
}
.page form
{
display: inline;
}
</style>
</head>
<body>
<?php
error_reporting('E_ALL&~E_NOTICE');
$page_size=10;
$show_page=5;
$page=$_GET['p'];
if(!$page) $page=1;
$page_banner="<div class='page'>";
$host="localhost:3306";
$user="root";
$passwd="";
$conn=mysqli_connect($host,$user,$passwd);
if(!$conn)
die("数据库连接失败：".mysqli_error($conn));
mysqli_select_db($conn,'new');
mysqli_query($conn,'set names utf8');
$sql='select * from num order by id asc limit '.(($page-1)*$page_size).",$page_size;";
$result=mysqli_query($conn,$sql);
echo '<div class="content">';
echo '<table border="1px" cellspacing="0px" align="center" width="30%">';
echo "<tr><th>ID</th><th>NAME</th></tr>";
while($row=mysqli_fetch_array($result,MYSQL_ASSOC))
{
echo"<tr><td>{$row['id']}</td><td>{$row['name']}</td></tr>";
}
echo "</table>";
echo "</div>";
mysqli_free_result($result);
$total_sql="select count(*) from num";
$total_result=mysqli_fetch_array(mysqli_query($conn,$total_sql),MYSQL_NUM);
$total=$total_result[0];
$total_page=ceil($total/$page_size);
mysqli_close($conn);
$pageoffset=($show_page-1)/2;
if($page>1){
$page_banner.="<a href=".$_SEAVER['PHP_SELF']."?p=1>首页</a>";
$page_banner.="<a href=".$_SEAVER['PHP_SELF']."?p=".($page-1).">上一页</a>";
}
else
{
$page_banner.="<span class='disable'>首页</span>";
$page_banner.="<span class='disable'>上一页</span>";
}
$start=1;
$end=$total_page;
if($total_page>$show_page){
if($page>$pageoffset+1){
$page_banner.='...';
}
if($page>$pageoffset)
{
$start=$page-$pageoffset;
$end=$total_page>$page+$pageoffset?$page+$pageoffset:$total_page;
}
else
{
$start=1;
$end=$show_page;
}
if($page+$pageoffset>$total_page){
$start=$start-($page+$pageoffset-$end);
}
}
for($i=$start;$i<=$end;$i++)
{
if($page==$i)
$page_banner.="<span class='current'>{$i}</span>";
else
$page_banner.="<a href=".$_SERVER['PHP_SELF']."?p=$i>".$i."</a>";
}
if($total_page>$show_page&&$total_page>$page+$pageoffset)
$page_banner.="...";
if($page<$total_page)
{
$page_banner.="<a href=".$_SEAVER['PHP_SELF']."?p=".($page+1).">下一页</a>";
$page_banner.="<a href=".$_SEAVER['PHP_SELF']."?p=".$total_page.">尾页</a>";
}
else
{
$page_banner.="<span class='disable'>尾页</span>";
$page_banner.="<span class='disable'>下一页</span>";
}
$page_banner.="共{$total_page}页,";
$page_banner.="<form action='mypage.php' method='get'>";
$page_banner.="到第<input type='text' size=2 name='p'>页";
$page_banner.="<input type='submit' value='确定'>";
$page_banner.="</form>";
$page_banner.="</div>";
echo $page_banner;
?>
</body>
</html>
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