Are there best practices for handling cookies in PHP scripts?

When handling cookies in PHP scripts, it is important to follow best practices to ensure security and proper functionality. One common best practice is to sanitize and validate any data stored in cookies to prevent injection attacks. Additionally, setting secure and HttpOnly flags on cookies can help protect sensitive information from being accessed by malicious actors.

// Set a cookie with secure and HttpOnly flags
setcookie("user_id", $user_id, time() + 3600, "/", "", true, true);