I'm not even sure if I am saying this correctly but bear with me. We are moving an application from Ubuntu Server to RHEL. In doing so, we are looking at ways to re-implement a similar way that Debian-based systems clear PHP sessions. I, like a few others, thought that the session_gc() function would meet the need. The first example even states that it would be ran via task manager such as cron. But, as others have found¹², this does not work. I am unable to find a reference to SAPI specific handling in the general Session documentation. The only piece that seems of minor relevance is this part on Session Data Deletion.

I think the documentation needs to be updated to reflect the scenarios where session_gc actually works. The first example may even need to be removed entirely unless it can actually work with some changes.