如何解决php翻页出现乱码问题

<?php
include("conn.php");
function _PAGEFT($totle,$displaypg=20,$url=''){
global $page,$firstcount,$pagenav,$_SERVER;
$GLOBALS["displaypg"]=$displaypg;
if(!$page)
$page=1;
if(!$url){
$url=$_SERVER["REQUEST_URI"];
}
$parse_url=parse_url($url);
$url_query=$parse_url["query"];
if($url_query){
$url_query=ereg_replace("(^|&)page=$page","",$url_query);
$url = str_replace($parse_url["query"], $url_query, $url);
if ($url_query)
$url .= "&page";
else
$url .= "page";
} else {
$url .= "?page";
}
$lastpg = ceil($totle / $displaypg); //最后页，也是总页数
$page = min($lastpg, $page);
$prepg = $page -1; //上一页
$nextpg = ($page == $lastpg ? 0 : $page +1); //下一页
$firstcount = ($page -1) * $displaypg;
$pagenav = "显示第 <B>" . ($totle ? ($firstcount +1) : 0) . "</B>-<B>" . min($firstcount + $displaypg, $totle) . "</B> 条记录，共 $totle 条记录";
if ($lastpg <= 1)
return false;
$pagenav .= " <a href='$url=1'>首页</a> ";
if ($prepg)
$pagenav .= " <a href='$url=$prepg'>前页</a> ";
else
$pagenav .= " 前页 ";
if ($nextpg)
$pagenav .= " <a href='$url=$nextpg'>后页</a> ";
else
$pagenav .= " 后页 ";
$pagenav .= " <a href='$url=$lastpg'>尾页</a> ";
$pagenav .= "　到第 <select name='topage' size='1' onchange='window.location=\"$url=\"+this.value'>\n";
for ($i = 1; $i <= $lastpg; $i++) {
if ($i == $page)
$pagenav .= "<option value='$i' selected>$i</option>\n";
else
$pagenav .= "<option value='$i'>$i</option>\n";
}
$pagenav .= "</select> 页，共 $lastpg 页";
}
?>

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