TL;DR: * ported upstream 712e60f9ed into the Webtatic php71w 7.1.33 SRPM, rebuilt on a CentOS 7 container, ~35 min to build, ~6 s of php-fpm downtime per host. Two gotchas at the bottom.

Someone in the earlier PHP2Shell thread asked if Ondřej's backports are Debian only. They are, and that was our problem. We still had a couple dozen CentOS 7 boxes on Webtatic 7.1.33, Webtatic has been dead for years, and the PHP 8 estimate for just one of the apps was 6 to 8 person-days. So we rebuilt the packages ourselves. Writing it down because I couldn't find anyone who had done it for Webtatic.

The patch. Upstream's fix for old branches is php-src 712e60f9ed ("Avoid state corruption via bailout"). It doesn't apply to 7.1 cleanly. I diffed four community 7.1 ports against upstream and Qsnh/php2shell-fixed was the closest.…