اشکال در کد paging محتویات یک آرایه

[mprophp]

سلام دوستان
در مورد نمایش صفحه به صفحه محتویات یک آرایه تو internet جستجو کردم و کد زیر رو پیدا کردم .اما موقع اجرا صفحه بعد رو نشون نمی ده .کسی نمی دونه مشکل چیه؟

<?php
$items = array("red","yellow",
"pink","green",
"purple","blue",
"orange","opal",
"ruby","brown",
"bronze","copper",
"ginger","tope",
"orange","light blue",
"light green","dark yellow",
"grey","black",
"white","gold",
"silver");

$thispage = $PHP_SELF ;
$num = count($items); // number of items in list
$per_page = 2; // Number of items to show per page
$showeachside = 5; // Number of items to show either side of selected page

if(empty($start))$start=0; // Current start position

$max_pages = ceil($num / $per_page); // Number of pages
$cur = ceil($start / $per_page)+1; // Current page number
?>
<style type="text/css">
<!--
.pageselected {
color: #FF0000;
font-weight: bold;
}
-->
</style>
<table width="400" border="0" align="center" cellpadding="0" cellspacing="0" class="PHPBODY">
<tr>
<td width="99" align="center" valign="middle" bgcolor="#EAEAEA">
<?php
if(($start-$per_page) >= 0)
{
$next = $start-$per_page;
?>
<a href="<?php print("$thispage".($next>0?("?start=").$next:""));?>"><<</a>
<?php
}
?></td>
<td width="201" align="center" valign="middle" class="selected">
Page <?php print($cur);?> of <?php print($max_pages);?><br>
( <?php print($num);?> records )</td>
<td width="100" align="center" valign="middle" bgcolor="#EAEAEA">
<?php
if($start+$per_page<$num)
{
?>
<a href="<?php print("$thispage?start=".max(0,$start+$per_page));?>">&gt;&gt;</a>
<?php
}
?></td>
</tr>
<tr><td colspan="3" align="center" valign="middle">&nbsp;</td></tr>
<tr>
<td colspan="3" align="center" valign="middle" class="selected">
<?php
$eitherside = ($showeachside * $per_page);
if($start+1 > $eitherside)print (" .... ");
$pg=1;
for($y=0;$y<$num;$y+=$per_page)
{
$class=($y==$start)?"pageselected":"";
if(($y > ($start - $eitherside)) && ($y < ($start + $eitherside)))
{
?>
&nbsp;<a class="<?php print($class);?>" href="<?php print("$thispage".($y>0?("?start=").$y:""));?>"><?php print($pg);?></a>&nbsp;
<?php
}
$pg++;
}
if(($start+$eitherside)<$num)print (" .... ");
?></td>
</tr>
<tr>
<td colspan="3" align="center">
<?php
for($x=$start;$x<min($num,($start+$per_page)+1);$x++)print($items[$x]."<br>");
?></td>
</tr>
</table>

[moohssenn]

این خط رو بالای کدت زیر آرایه اضافه کن


$start=$_GET[start];