As per decision during RFC review for T172165: Require either PHP 7.0+ or HHVM in MW 1.31, MediaWiki should bump its PHP requirement to 5.6 as soon as possible, and at the latest in time for the 1.31 branch point (i.e. April 2018).
WMF blockers include PHP upgrades on wikitech and dumps infrastructure.
- Final call period ended
- Upgrade wikitech
- Upgrade dump hosts
- Upgrade script hosts