Are there any potential pitfalls to consider when working with frames in PHP?

One potential pitfall to consider when working with frames in PHP is the risk of security vulnerabilities such as clickjacking. To prevent this, you can use the X-Frame-Options header to control how your content is embedded in frames on other sites. This header allows you to specify whether your content can be framed by other pages or not.

header('X-Frame-Options: DENY');