php数字分页类的代码

function getnavhtml($pagenum,$pagesize,$rowcount,$navurl){
$pagecount = (int)($rowcount/$pagesize); //总页数
if ($rowcount % $pagesize >0){
$pagecount++;
}
if ($pagenum>$pagecount){
$pagenum = 1;
}
$firstnav = "首页 ";
$lastnav = "尾页 ";
$prevnav="";
$nextnav="";
if ($pagenum>1){
$navpagenum = $pagenum-1;
$prevnav = "上一页 ";
}
if ($pagenum<$pagecount && $pagecount>1){
$navpagenum = $pagenum+1;
$nextnav = "下一页 ";
}
$amongnav="";

//关键循环

for ($i=1;$i<=5;$i++){
$navpagenum = $pagenum+ $i-3;
if ($navpagenum>0 && $navpagenum<=$pagecount){
$navcss教程 = $navpagenum == $pagenum?" class="hover"":"";
$amongnav.="{$navpagenum} ";
}
}
return $firstnav.$prevnav.$amongnav.$nextnav.$lastnav." ".$pagenum."/".$pagecount." 共有[".$rowcount."]条数据";
}
}

/**
* 获取页码导航html
* @param $pagenum：当前页码
* @param $pagesize：每页数量
* @param $rowcount：记录总数
* @param $navurl：链接页面url
*/