What potential issue is present in the provided code that may prevent session variables from being stored?

The potential issue present in the provided code is that the session_start() function needs to be called before any output is sent to the browser. If there is any whitespace or HTML tags before the session_start() function, it will prevent session variables from being stored. To solve this issue, make sure that session_start() is called at the very beginning of the PHP script, before any HTML or whitespace. 

<?php
// Start the session
session_start();

// Rest of the PHP code goes here
?>
<!DOCTYPE html>
<html>
<head>
    <title>Your Page Title</title>
</head>
<body>
    <!-- Your HTML content goes here -->
</body>
</html>

Keywords

session variables storage code issue prevention

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