How can the path attribute in a cookie affect its functionality, and what considerations should be made when setting this attribute?

The path attribute in a cookie specifies the URL path for which the cookie is valid. If the path attribute is not set correctly, the cookie may not be accessible on certain pages or may be accessible on unintended pages. When setting the path attribute, it is important to ensure that it matches the directory structure of the website to control where the cookie is sent.

// Set a cookie with a specific path
setcookie("user", "John", time() + 3600, "/path/to/cookie");