What are the best practices for setting cookies in PHP for website customization?

When setting cookies in PHP for website customization, it is important to follow best practices to ensure security and efficiency. One key practice is to set the cookie parameters securely, including the expiration time, path, domain, and secure flag. Additionally, it is recommended to sanitize and validate the data being stored in the cookie to prevent any security vulnerabilities.

// Set a cookie with secure parameters
$cookie_name = 'user';
$cookie_value = 'John Doe';
$expiration_time = time() + 3600; // 1 hour
$cookie_path = '/';
$cookie_domain = 'example.com';
$secure_flag = true; // Set to true if using HTTPS

setcookie($cookie_name, $cookie_value, $expiration_time, $cookie_path, $cookie_domain, $secure_flag);