请求大家帮我看一下代码出现的问题。我不知道问题在哪里

<?php
include "page.class.php";
$link=mysql_connect("localhost","root");
if(!$link){
echo "链接数据库失败！";
exit;
}
mysql_select_db("users",$link);
$result=mysql_query("select * from shops");
$total=mysql_num_rows($result);
$num=8;
$page=new page($total,$num);
$sql="select * from shops{$page->limit}";
$result=mysql_query($sql);
echo *<table align="center", width="800px" border="black">*;
echo*<caption><h1>shops</h1></caption>*;
while($row=mysql_fetch_assoc($result)){
echo *<tr>*;
echo *<td>*.$row[id].*</td>*;
echo *<td>*.$row[name].*</td>*;
echo *<td>*.$row[sex].*</td>*;
echo *</tr>*;
}
echo *<tr><td colspan="5", align="right">*.$page->fpage().*</td><tr>*;
echo "</table>";
?>

<?php
class page {
private $total;
private $listrows;
private $limit;
private $uri;
private $pagenum;
public function __construct($total,$listrows=8){
$this->total=$total;
$this->listrows=$listrows;
$this->uri=$this->geturi();
$this->page!=empty($_GET["page"]) ? $_GET["page"] : 1;
$this->pagenum=ceil($this->total/$this->listrows);
$this->limit=$this->setlimit();
}
private function setlimit(){
return "limit".($this->page-1)*$this->listrows.",{$this->listrows}";
}
private function geturi(){
$url=$_SERVER["REQUEST_URI"].(strpos($_SERVER["REQUEST_URI"],*?*)?**:"?");
$parse=parse_url($url);
if(isset($parse["query"])){
parse_str($parse["query"],$params);
unset($params["page"]);
$url=$parse[*path*].*?*.http_build_query($params);
}
return $url;
}
private function __get($args){
if($args=="limit"){
return $this->limit;
}
else{
return null;
}
}
function fpage(){
return *分页信息*;
}
}
?>

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