What are the potential pitfalls of passing PHP variables through URLs?

Passing PHP variables through URLs can expose sensitive information and make your application vulnerable to security threats such as SQL injection attacks. To prevent this, you should always sanitize and validate user input before using it in your code. Additionally, consider using sessions or POST requests to pass data securely. 

// Example of passing variables securely using sessions
session_start();

$_SESSION['variable'] = $value;

// Redirect to another page
header("Location: another_page.php");
exit;

Keywords

security risks data exposure URL parameters sensitive information injection attacks

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