Using RAND() and Pagenation

Hello,

Im creating a script that would do the following.

There are total 250 ($max) questions, i want the script to randomly pick 50 ($amount) different / unique questions. – This part works!

What i want it to do then is to display 1 ($show) question on each page, then the user would click next, for the next question, or they could go back and retry it.

So what i am having problems with:

Heres my code:

[code=php]
<?php

$max = 250; $min = 1;
$show = 1; $amount = 50;
$x = 0; $numbers[0] = 0;

$start = isset($_POST[‘s’])?$_POST[‘s’]:0;
$total_rows = isset($_POST[‘t’])?$_POST[‘t’]:”;
$_SERVER[‘PHP_SELF’] = isset($_SERVER[‘PHP_SELF’])?$_SERVER[‘PHP_SELF’]:”;

while (count($numbers) < $amount) {
$ranvar = rand($min, $max);
while(in_array($ranvar, $numbers)) {
$ranvar = rand($min, $max);
}

$numbers[$x] = $ranvar;
$x++;
}

if(!$total_rows)
list($total_rows)=$x;

$startP = $start-$show;
$startN = $start+$show;

$num_pages = intval($total_rows/$show);
if($total_rows%$show)
{
$num_pages++;
}

echo ‘x: ‘.$x.'<br />’;

for($numbers as $value) {
echo ‘Question: ‘.$value.'<br />’;
}

//print_r($numbers);

?>
<table width=”100%”>
<tr>
<td>
<form action=”<?=$_SERVER[‘PHP_SELF’];?>” method=”post”>
<?php
echo $startP>=0? ‘<input type=”submit” value=”PREV”>’.
‘<input type=”hidden” name=”t” value=”‘.$total_rows.'”>’.
‘<input type=”hidden” name=”s” value=”‘.$startP.'”>’:'<input type=”submit” value=”PREV” disabled>’;
?>
</form>
</td>
<td>
<form action=”<?=$_SERVER[‘PHP_SELF’];?>” method=”post”>

<?php
echo $startN<$total_rows? ‘<input type=”submit” value=”NEXT”>’.
‘<input type=”hidden” name=”t” value=”‘.$total_rows.'”>’.
‘<input type=”hidden” name=”s” value=”‘.$startN.'”>’:'<input type=”submit” value=”NEXT” disabled>’;
?>
</form>
</td>
</tr>
</table>
[/code]

Thanks for any help.

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