Beta Features/PHP7

From MediaWiki.org
< Beta Features(Redirected from PHP7)
Jump to navigation Jump to search

Other languages:
Cymraeg • ‎Deutsch • ‎English • ‎Tiếng Việt • ‎Türkçe • ‎dansk • ‎español • ‎français • ‎italiano • ‎magyar • ‎polski • ‎português do Brasil • ‎čeština • ‎русский • ‎українська • ‎العربية • ‎سنڌي • ‎हिन्दी • ‎ไทย • ‎中文 • ‎日本語 • ‎한국어

The Wikimedia Foundation has been employing HHVM to run MediaWiki in production since 2014.[1] Since then, a few things happened that made it compelling for us to move back to the "official" PHP interpreter:

  • PHP 7.x has brought huge performance improvements, so that its performance is nowadays comparable to, if not better than, HHVM for our needs.[2][3]
  • HHVM has dropped support for pure PHP in favour of Hack, an "evolution" of PHP which doesn't have widespread support.[4]

The Wikimedia Foundation is moving all Wikimedia wikis to use PHP7 in early 2019.[5] PHP7 has been available since January 2019.[6]

You can verify that it is enabled for you by visiting Special:Version on your wiki, and checking that it says "php" instead of "HHVM" in the "Installed software" table.

Questions and answers[edit]

I am a non-technical user. What does this mean?[edit]

Hopefully nothing. This is about changing the software used to run the wiki's code. Ideally, you should notice no real difference.

When will this happen?[edit]

Work began in 2017 and ramped up over 2018. The beta feature is available since January 2019, and PHP 7 support should be production-complete in the first half of 2019.

What should I do if I find an issue?[edit]

Report it on Phabricator, in the PHP 7.2 support project.

Why are edits being tagged?[edit]

This will help us identify performance, functional and stability concerns specific to PHP in comparison to HHVM. You can ignore the PHP7 tags.

References[edit]