PHP session is not persisting in pagination - php

Question

PHP session variable loses data when used in a page that uses pagination script.
I'm using PHP pagination using $_GET[]. When the url looks like example.com/folder/index.php?page=2 the session does not work. But it works fine when the url is like example.com/folder/index.php.
How can I keep the session data persistent when using along with pagination script?
Edit:
Yes I am using session_start() at the top of the page.
session_start();
$page = (!isset($_GET['page']))? 1 : (int)$_GET['page'];
$prev_link = ($page - 1);
$next_link = ($page + 1);
/* Max results per page */
$max_results = 20;
/* Calculate the offset */
$from = (($page * $max_results) - $max_results);
$stmt3 = $dbh->prepare("SELECT COUNT(id) FROM my_table");
$stmt3->execute();
$row3 = $stmt3->fetch(PDO::FETCH_NUM);
if(!$row3)
{
die('Could not get data.');
}
$total_results = $row3[0];
$total_pages = ceil($total_results / $max_results);
$pagination = '';
/* Create a PREV link if there is one */
if($page > 1)
{
$pagination .= "<a class='pagination_link' href='http://example.com/folder/index.php?page=".$prev_link."' style='padding:1%;'>Previous</a>";
}
/* Loop through the total pages */
for($i = max(1, $page - 5); $i <= min($page + 5, $total_pages); $i++)
{
if(($page) == $i)
{
$pagination .= "<span style='padding:1%;font-weight:bold;'>$i</span>";
}
else
{
$pagination .= "<a class='pagination_link' href='index.php?page=".$i."' style='padding:1%;'>".$i."</a>";
}
}
/* Print NEXT link if there is one */
if($page < $total_pages)
{
$pagination .= "<a class='pagination_link' href='http://example.com/folder/index.php?page=".$next_link."' style='padding:1%;'> Next</a>";
}

Answer 1

In each of your php pages that you wish to utilise PHP Sessions, please make sure that the following line is at the top of your PHP pages
<?php session_start(); ?>
This ensures that session data is carried across pages