php页码下拉框跳转

php页码下拉框跳转
<?
require('sjk.php');
$key=$_GET['key'];
$select=$_GET['select'];
$query="select * from biao where $select like '%$key%'";
$rs=mysql_query($query);
?>
<?
$page_size=2;
if($num<=$page_size){
$page_count=1;
}
if($num%$page_size)
{
$page_count=(int)($num/$page_size)+1;
}
else {
$page_count=$num/$page_size;
}
if(isset($_GET[page]))
{
$page=(int)($_GET[page]);
}
else {
$page=1;
}
$qq=mysql_query("select * from biao where $select like '%$key%' limit ".($page-1)*$page_size .", $page_size");
?>
<div align="center">
<table width="757" border="0" cellpadding="0" cellspacing="0"
id="links">
<!--DWLayoutTable-->
<tr>
<td width="757" height="149"
background="image/SSSSS.jpg"><!--DWLayoutEmptyCell--> </td>
</tr>
</table>
</div>
<div align="center">
<table width="757" border="0" cellpadding="0"
cellspacing="0"id="links">
<!--DWLayoutTable-->
<tr>
<td width="415" height="32" valign="top</td>
<td width="342" valign="top
</table></td>
</div>
<div align="center">
<?
$first=1;
$dd=$page+1;
$jj=$page-1;
$last=$page_count;
if ($page!=$first) {
echo "<a href='?page=".$first."&key=".$key."&select=".$select."'>首页</a>";
echo "<a href='?page=".$jj."&key=".$key."&select=".$select."'> 上一页</a>";
}
for ($j=1;$j<=$page_count;$j++){
if($j==$page){
echo "$j ";
}
else{
echo "<a href='?page=".$j."&key=".$key."&select=".$select."'>[$j] </a> ";
}
}
$first=1;
$dd=$page+1;
$jj=$page-1;
$last=$page_count;
$select=$_GET['select'];
if ($page!=$last) {
echo "<a href='?page=".$dd."&key=".$key."&select=".$select."'> 下一页</a>";
echo "<a
href='?page=".$last."&key=".$key."&select=".$select."'> 尾页</a>";
}
?>
<?
echo "到第 <select name='page' size='1'
onchange='window.location=\"$url=\"+this.value'>\n";
for ($j=1;$j<=$page_count;$j++) {
if ($j == $page)
echo "<option value='$j' selected>$j</option>\n";
else
echo "<option value='$j'>$j</option>\n";
}
echo "</select> 页，共 $page_count 页";
?>
</html>。