很好的PHP分页(调试过)

<?
//分页函数

function genpage(&$sql,$page_size=2)
{
global $prepage,$nextpage,$pages,$sums; //out param
$page = $_GET["page"];
$eachpage = $page_size;
$pagesql = strstr($sql," from ");
$pagesql = "select count(*) as ids ".$pagesql;
$result = mysql_query($pagesql) or die(mysql_error());
if($rs = mysql_fetch_array($result)) $sums = $rs[0];
$pages = ceil(($sums-0.5)/$eachpage)-1;
$pages = $pages>=0?$pages:0;
$prepage = ($page>0)?$page-1:0;
$nextpage = ($page<$pages)?$page+1:$pages;
$startpos = $page*$eachpage;
$sql .=" limit $startpos,$eachpage ";
}
//显示分页
function showpage()
{
global $page,$pages,$prepage,$nextpage,$queryString; //param from genpage function
$shownum =10/2;
$startpage = ($page>=$shownum)?$page-$shownum:0;
$endpage = ($page+$shownum<=$pages)?$page+$shownum:$pages;

echo "共".($pages+1)."页: ";
if($page>0)echo "<a href=$PHP_SELF?page=0&$queryString>首页</a>";
if($startpage>0)
echo " ... <b><a href=$PHP_SELF?page=".($page-$shownum*2)."&$queryString>?</a></b>";
for($i=$startpage;$i<=$endpage;$i++)
{
if($i==$page) echo " <b>[".($i+1)."]</b> ";
else echo " <a href=$PHP_SELF?page=$i&$queryString>".($i+1)."</a> ";
}
if($endpage<$pages)
echo "<b><a href=$PHP_SELF?page=".($page+$shownum*2)."&$queryString>?</a></b> ... ";
if($page<$pages)
echo "<a href=$PHP_SELF?page=$pages&$queryString>尾页</a>";

}
?>


-------------------------------------------
//显示前

程序代码
<?php
$db=mysql_connect($servname,$sqlservname,$sqlservpws) or die("数据库连接失败");
mysql_select_db($sqlname,$db);
$sql = "select * from news order by yd631_id desc ";
genpage($sql); //只需要正常代码加上这一行就ok。
$result =mysql_query($sql);
while($rs =mysql_fetch_array($result))
{
?>


显示信息
显示信息
显示信息

<?php
}
?>

//循环

<?php

showpage(); //显示页
?>
<?php
mysql_close();
exit;
?>[align=left][size=1][color=#cccccc][Edit on 2008-1-19 16:24:14 By ishion][/color][/size][/align]