I want to ask something about my code.
Here is my main.php code:
<?php
session_start();
require"config/connection.php";
?>
<div>
<tr>
<td>
<?php require "template/header_new.php"; ?>
</td>
</tr>
</div>
When I run the code, an error mention this:
Notice: Undefined index: first_name in \template\header_new.php on line 29
Here is my header_new.php:
<span style="line-height:28px"><strong><font color="#00674e"><?= $_SESSION["first_name"]?></font> | <a href="logout.php">Logout</a></strong></span></div>
One thing that makes me confused, it is running well in development server.
But, the error appeared once I migrate the app to the production server. In the production server looks like the code doesn't save php session.
Is this php version issue or other issues that I still haven't discovered yet?
PS: The app running in PHP 5.3.28 version
MySQL is running in development server.
MariaDB is running in production server
Thank you
