PHP paging small code

Author：Eve Cole Update Time：2010-07-19 18:22:20

<!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=gb2312" />
<title>php make page list</title>
<style type="text/CSS">

</style>
</head>
<body>
<table width="530" height="103" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<th width="30" height="38" bgcolor="#E3E3E3" scope="col">ID</th>
<th width="500" bgcolor="#E3E3E3" scope="col">文章标题</th>
</tr>
<?php
/*
* Created on 2010-4-17
*
* Order by Kove Wong
*/
$link=MySQL_connect('localhost','root','haoxiazai1987');
mysql_select_db('pagelist');
mysql_query('set names gbk');

$Page_size=10;

$result=mysql_query('select * from v_char');
$count = mysql_num_rows($result);
$page_count = ceil($count/$Page_size);

$init=1;
$page_len=7;
$max_p=$page_count;
$pages=$page_count;

//判断当前页码
if(empty($_GET['page'])||$_GET['page']<0){
$page=1;
}else {
$page=$_GET['page'];
}

$offset=$Page_size*($page-1);
$sql="select * from v_char limit $offset,$Page_size";
$result=mysql_query($sql,$link);
while ($row=mysql_fetch_array($result)) {
?>
<tr>
    <td bgcolor="#E0EEE0" height="25px"><div align="center">
      <?php echo $row['id']?>
    </div></td>
    <td bgcolor="#E0EEE"><div align="center">
      <?php echo $row['name']?>
    </div></td>
</tr>

<?php
}

$page_len = ($page_len%2)?$page_len:$pagelen+1;//页码个数
$pageoffset = ($page_len-1)/2;//页码个数左右偏移量

$key='<div class="page">';
$key.="<span>$page/$pages</span> "; //第几页,共几页
if($page!=1){
$key.="<a href="".$_SERVER['PHP_SELF']."?page=1">第一页</a> "; //第一页
$key.="<a href="".$_SERVER['PHP_SELF']."?page=".($page-1)."">上一页</a>"; //上一页
}else {
$key.="第一页 ";//第一页
$key.="上一页"; //上一页
}

if($pages>$page_len){
//如果当前页小于等于左偏移
if($page<=$pageoffset){
$init=1;
$max_p = $page_len;
}else{//如果当前页大于左偏移
//如果当前页码右偏移超出最大分页数
if($page+$pageoffset>=$pages+1){
$init = $pages-$page_len+1;
}else{
//左右偏移都存在时的计算
$init = $page-$pageoffset;
$max_p = $page+$pageoffset;
}
}
}
for($i=$init;$i<=$max_p;$i++){
if($i==$page){
$key.=' <span>'.$i.'</span>';
} else {
$key.=" <a href="".$_SERVER['PHP_SELF']."?page=".$i."">".$i."</a>";
}
}

if($page!=$pages){
$key.=" <a href="".$_SERVER['PHP_SELF']."?page=".($page+1)."">下一页</a> ";//下一页
$key.="<a href="".$_SERVER['PHP_SELF']."?page={$pages}">最后一页</a>"; //最后一页
}else {
$key.="下一页 ";//下一页
$key.="最后一页"; //最后一页
}
$key.='</div>';
?>
<tr>
<td colspan="2" bgcolor="#E0EEE0"><div align="center"><?php echo $key?></div></td>
</tr>
</table>
</body>
</html>

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