Fedora Users — problem in my php code

Hi,

I have a problem in my php code.  I simplify the code as the 4 pieces
below and hope somebody can help me to fix the problem.

1. tsstart.php: -- this is the start point to be browsed

<?php
include "tsdata.php";
include "tsshow.php";
?>

2. tsdata.php: -- to get data, here I set it as a 2-d array and assign
values to it to simplify the code

<?php
global $obj;
global $ind;
for($i=0;$i<3;$i++) {
 for($j=0;$j<3;$j++) {
  $obj[$i][$j] = $i + $j*2;
 }
}
$ind=0;
?>

3. tsshow.php: -- display the values of $obj:

<?php
global $obj;
global $ind;
echo "result-set index: " . $ind . "<br>";
?>

<html> <body>
<table align=center>
 <tr><td>First Row:</td><td><? echo $obj[$ind][0] ?></td> </tr>
 <tr><td>Second Row:</td><td><? echo $obj[$ind][1] ?></td> </tr>
</table>
<a href="tsnext.php">Next</a>&nbsp;
</body> </html>

4. tsnext.php: -- to display the next 2-d array element's value:

<?php
global $obj;
global $ind;

$ind++;
echo "new ind: " . $ind . "<br>";
include "tsshow.php";
?>

Now, when I browse tsstart.php, it displays:
result-set index: 0
  First Row: 0
  Second Row: 2
and the link "Next"

However, when I click the link "Next", it displays:
new ind: 1
result-set index: 1
  First Row:
  Second Row:

no values are displayed.  Apparently, $obj is not passed to tsnext.php and
tsshow.php (the second time), but $ind is.  What is wrong in the above
codes?  Can somebody help me?

I greatly appreciate all help!

Hongwei Li