What are the potential challenges or limitations when including PHP files that use sessions for captcha generation in a main PHP file?

When including PHP files that use sessions for captcha generation in a main PHP file, a potential challenge is that the session variables may not be accessible in the included files. To solve this, you can start the session in the main PHP file before including the files that use sessions for captcha generation. 

<?php
session_start();
include 'captcha_generation.php';
// Rest of the code
?>

Keywords

PHP sessions captcha include limitations

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