What are the potential advantages and disadvantages of passing variables via URL versus storing them in session variables in PHP?

Passing variables via URL can make it easier to share links and bookmark pages, but it can also expose sensitive data and clutter the URL. Storing variables in session variables can provide a more secure and cleaner way to handle data, but it may require more server resources and can be less user-friendly for sharing links. 

// Passing variables via URL
// Example: www.example.com/page.php?variable=value

$variable = $_GET['variable'];

// Storing variables in session
session_start();
$_SESSION['variable'] = $value;

Keywords

URL parameters session variables security risks data persistence PHP programming.

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