issue "checked value hold in pagination" - php

Question

I have a script with the code below and a pagination where the user can check checkboxes to narrow doen the results shown everything seems to work great the only problem is that when a user clicks the next page in the pagination the results are lost and the default results are shown. I think I may need to use sessions to store the query or statement but I am unsure how to use them. If anyone can help me or point me in the right direction I would be very greatful.
<?php
include("config.php");
$start = 0;
$per_page = 10;
if(!isset($_GET['page'])){
$page = 1;
} else
{
$page = $_GET['page'];
}
if($page<=1)
$start = 0;
else
$start = $page * $per_page - $per_page;
$sql="select id,question,correctAnswer,category from math order by id";
$num_rows = mysql_num_rows(mysql_query($sql));
$num_pages = $num_rows / $per_page;
$sql .= " LIMIT $start, $per_page";
$result=mysql_query($sql) or die(mysql_error());
while($row=mysql_fetch_array($result))
{ ?>
..............
<?php
if($page > 1){
$prev = $page - 1;
$prev = " <a href='?page=$prev'>prev</a> ";
} else {
$prev = "";
}
if($page < $num_pages){
$next = $page + 1;
$next = " <a href='?page=$next'>next</a> ";
}
else
{
$next = "";
}
echo $prev;
echo $next;
?>
and the following code is about selection of checkbox value one by one and all
function selectall()
{
var selectAll = document.forms[0].length;
if(document.forms[0].topcheckbox.checked==true)
{
for(i=1;i<selectAll;i++)
{
document.forms[0].elements[i].checked=true;
}
}
else
{
for(i=1;i<selectAll;i++)
document.forms[0].elements[i].checked=false;
}
}
function goSelect()
{
var select = document.forms[0].length;
var checkboxes=""
for(i=1;i<select;i++)
{
if(document.forms[0].elements[i].checked==true)
checkboxes+= " " + document.forms[0].elements[i].name
}
if(checkboxes.length>0)
{
var con=confirm("You have selected ...........");
if(con)
{
window.location.assign("submit.php?recsno="+checkboxes)
// document.forms[0].submit()
}
}
else
{
alert("No record is selected.")
}
}

Answer 1

You could probably use the PHP Get method? and then receive it in your javascript.
For example; searchurl.com/results.php?box=1
Then retrieve it on the next page.
I believe this should help you, be sure to let me know if you need more detail.

Answer 2

This is my all code.
include("config.php");
$start = 0;
$per_page = 10;
if(!isset($_GET['page'])){
$page = 1;
} else{
$page = $_GET['page'];
}
if($page<=1)
$start = 0;
else
$start = $page * $per_page - $per_page;
$sql="select id,question,correctAnswer,category from math order by id";
$num_rows = mysql_num_rows(mysql_query($sql));
$num_pages = $num_rows / $per_page;
$sql .= " LIMIT $start, $per_page";
$result=mysql_query($sql) or die(mysql_error());
while($row=mysql_fetch_array($result))
{ ?>
<tr>
<td><input name="<?php echo $row['id']; ?>" type="checkbox" class="check"></td>
<td><center><?php echo htmlspecialchars_decode($row['id'], ENT_QUOTES); ?></center></td>
<td style="padding-left:25px;margin:15px"><?php echo $_SESSION['question']= htmlspecialchars_decode($row['question'], ENT_QUOTES); ?></center></td>
<td><center><?php echo htmlspecialchars_decode($row['correctAnswer'], ENT_QUOTES); ?></center></td>
<td><center><?php echo htmlspecialchars_decode($row['category'], ENT_QUOTES); ?></center></td>
<td>View</td>
</tr>
<?php } ?>
<tr>
<td><strong>Select</strong></td>
<td><strong>Sr No </strong></td>
<td><strong>Question </strong></td>
<td><strong>CorrectAnswer </strong></td>
<td><strong>Category </strong></td>
<td><strong>View Details</strong></td>
</tr>
</table>
</td>
</tr>
<tr>
<td>
<?php
if($page > 1){
$prev = $page - 1;
$prev = " <a href='?page=$prev'>prev</a> ";
} else {
$prev = "";
}
if($page < $num_pages){
$next = $page + 1;
$next = " <a href='?page=$next'>next</a> ";
}
else
{
$next = "";
}
echo $prev;
echo $next;
?>