Is it possible to maintain the current structure of passing variables via URLs in PHP without compromising security?

When passing variables via URLs in PHP, it is important to sanitize and validate the input to prevent security vulnerabilities such as SQL injection and cross-site scripting attacks. One way to maintain the current structure of passing variables via URLs without compromising security is to use PHP's built-in functions like `filter_input()` or `filter_var()` to sanitize and validate the input. 

// Retrieve and sanitize input from URL parameters
$user_id = filter_input(INPUT_GET, 'user_id', FILTER_SANITIZE_NUMBER_INT);
$username = filter_input(INPUT_GET, 'username', FILTER_SANITIZE_STRING);

// Use the sanitized variables in your code
echo "User ID: " . $user_id;
echo "Username: " . $username;

Keywords

PHP URL variables security data validation input sanitization

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