php mysql 上一页 下一页 分页代码片段

<?php

include("conn.php");

$pagesize=5;

$url=$_SERVER["REQUEST_URL"];

$url=parse_url($url);

$url=$url[path];

$numq=mysql_query("SELECT * FROM test ");

$num=mysql_num_rows($numq);

if($_GET){

$pageval=$_GET;

//从第几页开始

$page=($pageval-1)*$pagesize;

$page.=",";

}

if($num > $pagesize){

if($pageval<=1)$pageval=1;

echo "共".$num."条"."<a href=$url?page=".($pageval-1).">上一页</a><a href=$url?page=".($pageval+1).">下一页</a>";

}

echo $SQL = "SELECT * FROM test limit $page,$pagesize";

$query=mysql_query($SQL);

while($row = mysql_fetch_array($query)){

echo "<hr><br>".$row[name]."|".$row[sex];

}

?>