Is the current version compatible with PHP 7.1 ?

Yes, the current PmWiki 2.2.97 will work up to PHP 7.1. Some old cookbook recipes (modules written by other people) may not work. --Petko May 20, 2017, at 03:58 PM

Since whenever pmwiki.php started using session_status(), it now requires PHP 5.4 or later. "5.3 or later" is no longer correct - at least not with pmwiki-2.3.15

Thanks for noticing - indeed, the session_status() call was added in 2.3.15. For the next version it will only be called if it exists. You can get the pre-release from ChangeLog. --Petko

This is a talk page for improving PmWiki.Requirements.