不错的php分布类

<?php
function genpage(&$sql,$page_size=10)
{
      global $pages,$sums,$eachpage,$page; //总页数，总记录，每页数，当前页
      $page = $_GET["page"];
   if($page ==0)$page =1;
      $eachpage = $page_size;
      $pagesql = strstr($sql," from ");
      $pagesql = "select count(*) as ids ".$pagesql;
      $conn = mysql_query($pagesql) or die(mysql_error());
      if($rs = mysql_fetch_array($conn))$sums = $rs[0];
     
      $pages=ceil($sums/$eachpage);
   if($pages==0)$pages=1;
  
      $startpos = ($page-1)*$eachpage;
      $sql .=" limit $startpos,$eachpage ";
}
//显示分页
function showpage()
{
 global $pages,$sums,$eachpage,$page; //总页数，总记录，每页数，当前页，其它参数
    $link=$_SERVER['PHP_SELF']; 
 
echo "记录".$sums.":".$eachpage."　";
echo "页数".$page."/".$pages."　";
$p_head=$page-5;
if($p_head<=0)$p_head=1;   //页码循环开始数 前5个
$p_end=$page+5;
if($p_end>$pages)$p_end=$pages;   //页码循环结束数 后5个
echo "[<a href=$link?page=1>首页</a>] ";
 for($i=$p_head;$i<=$p_end;$i++)
 {
 if($i!=$page)
  echo "<a href=$link?page=$i>[$i]</a> ";
 else
  echo "<b><strike>[$i]</strike></b> ";
 }
echo " [<a href=$link?page=$pages>末页</a>]";
}
?>