What are the limitations of using session variables in PHP?

One limitation of using session variables in PHP is that they rely on cookies, which may not be supported by all browsers or may be disabled by the user. To solve this issue, you can use a combination of session variables and URL parameters to ensure data persistence across pages. 

// Start the session
session_start();

// Set session variables
$_SESSION['username'] = 'john_doe';

// Use URL parameters to pass data between pages
header("Location: page2.php?username=".$_SESSION['username']);

Keywords

session variables PHP limitations scalability security

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