Are there any potential pitfalls to be aware of when setting cookies in PHP through links?

When setting cookies in PHP through links, one potential pitfall to be aware of is that the cookie may not be set if the user has disabled cookies in their browser settings. To solve this issue, you can check if cookies are enabled before setting the cookie by using the `headers_sent()` function.

if (!headers_sent()) {
    setcookie('cookie_name', 'cookie_value', time() + 3600, '/');
}