=== PHP version requirement ===
As of 1.27, MediaWiki now requires PHP 5.5.9 or higher. This corresponds with
-HHVM 3.1.
+HHVM 3.1. Additionally, the following PHP extensions are required:
+* ctype
+* iconv
+* json
+* mbstring
+* xml
=== Configuration changes in 1.27 ===
* $wgAllowMicrodataAttributes and $wgAllowRdfaAttributes were removed,
changes to languages because of Phabricator reports.
* (T113688) Change default numerals from Gurmukhi to Arabic for Punjabi locale.
+* (T116020) Aliases of magic words in MessagesXx.php are sorted by usage.
=== Other changes in 1.27 ===
+* Added dependency injection (DI) infrastructure, see docs/injection.txt for details.
+ It is planned to incrementally move MediaWiki code towards using DI, using the
+ service locator (SL) pattern as a stepping stone.
* ProfilerOutputUdp was removed. Note that there is a ProfilerOutputStats class.
* WikiPage::doDeleteArticleReal() and WikiPage::doDeleteArticle() now
ignore the 2nd and 3rd arguments (formerly $id and $commit).
* Title::newFromRedirect() was removed (deprecated since 1.21).
* Skin::commonPrintStylesheet() was removed (deprecated since 1.22).
* Skin::getCommonStylePath() was removed (deprecated since 1.24).
+* Skin::newFromKey() was removed (deprecated since 1.24).
+* Skin::getUsableSkins() was removed (deprecated since 1.23).
+* LoadBalancer::pickRandom() was removed (deprecated in 1.21).
+* Article::getUndoText() and WikiPage::getUndoText were removed (deprecated since
+ 1.21).
+* DifferenceEngine::setText() was removed (deprecated in 1.21).
+* Title::newFromRedirectArray() was removed (deprecated in 1.21).
+* UserMailer::send() no longer accepts $replyto as the 5th argument and $contentType
+ as the 6th. These must be passed in the options array now.
+* Title::newFromRedirectRecurse() was removed (deprecated in 1.21).
== Compatibility ==