RELEASE-NOTES-1.27

   1 Security reminder: If you have PHP's register_globals option set, you must
   2 turn it off. MediaWiki will not work with it enabled.
   3
   4 == MediaWiki 1.27 ==
   5
   6 THIS IS NOT A RELEASE YET
   7
   8 MediaWiki 1.27 is an alpha-quality branch and is not recommended for use in
   9 production.
  10
  11 === Configuration changes in 1.27 ===
  12 * Removed $wgUseLinkNamespaceDBFields
  13 * Deprecated $wgResourceLoaderMinifierStatementsOnOwnLine and
  14   $wgResourceLoaderMinifierMaxLineLength, because there was little value in
  15   making the behavior configurable. The default values (`false` for the former,
  16   1000 for the latter) are now hard-coded.
  17 * $wgDebugDumpSqlLength was removed (deprecated in 1.24).
  18 * $wgDebugDBTransactions was removed (deprecated in 1.20).
  19 * $wgRemoteUploadTarget (added in 1.26) removed, replaced by $wgForeignUploadTargets
  20 * $wgUseXVO has been removed, as it provides functionality only used by
  21   custom Wikimedia patches against Squid 2.x that probably noone uses in
  22   production anymore. There is now $wgUseKeyHeader that provides similar
  23   functionality but instead of the MediaWiki-specific X-Vary-Options header,
  24   uses the draft Key header standard.
  25 * $wgScriptExtension (and support for '.php5' entry points) was removed. See the
  26   deprecation notice in the release notes for version 1.25 for advice on how to
  27   preserve support for '.php5' entry points via URL rewriting.
  28
  29 === New features in 1.27 ===
  30 * $wgDataCenterId and $wgDataCenterRoles where added, which will serve as
  31   basic configuration settings needed for multi-datacenter setups.
  32   $wgDataCenterUpdateStickTTL was also added.
  33 * Added a new hook, 'UserMailerTransformContent', to transform the contents
  34   of an email. This is similar to the EmailUser hook but applies to all mail
  35   sent via UserMailer.
  36 * Added a new hook, 'UserMailerTransformMessage', to transform the contents
  37   of an emai after MIME encoding.
  38 * Added a new hook, 'UserMailerSplitTo', to control which users have to be
  39   emailed separately (ie. there is a single address in the To: field) so
  40   user-specific changes to the email can be applied safely.
  41 * $wgCdnMaxageLagged was added, which limits the CDN cache TTL
  42   when any load balancer uses a DB that is lagged beyond the 'max lag'
  43   setting in the relevant section of $wgLBFactoryConf.
  44
  45 ==== External libraries ====
  46
  47 === Bug fixes in 1.27 ===
  48
  49 === Action API changes in 1.27 ===
  50 * Added list=allrevisions.
  51 * generator=recentchanges now has the option to generate revids.
  52
  53 === Action API internal changes in 1.27 ===
  54
  55 === Languages updated in 1.27 ===
  56
  57 MediaWiki supports over 350 languages. Many localisations are updated
  58 regularly. Below only new and removed languages are listed, as well as
  59 changes to languages because of Bugzilla reports.
  60
  61 === Other changes in 1.27 ===
  62
  63 == Compatibility ==
  64
  65 MediaWiki 1.27 requires PHP 5.3.3 or later. There is experimental support for
  66 HHVM 3.3.0.
  67
  68 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
  69 support for them is somewhat less mature. There is experimental support for
  70 Oracle and Microsoft SQL Server.
  71
  72 The supported versions are:
  73
  74 * MySQL 5.0.3 or later
  75 * PostgreSQL 8.3 or later
  76 * SQLite 3.3.7 or later
  77 * Oracle 9.0.1 or later
  78 * Microsoft SQL Server 2005 (9.00.1399)
  79
  80 == Upgrading ==
  81
  82 1.27 has several database changes since 1.26, and will not work without schema
  83 updates. Note that due to changes to some very large tables like the revision
  84 table, the schema update may take quite long (minutes on a medium sized site,
  85 many hours on a large site).
  86
  87 If upgrading from before 1.11, and you are using a wiki as a commons
  88 repository, make sure that it is updated as well. Otherwise, errors may arise
  89 due to database schema changes.
  90
  91 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
  92 new database fields are filled with data.
  93
  94 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
  95 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
  96 with MediaWiki 1.21.
  97
  98 Don't forget to always back up your database before upgrading!
  99
 100 See the file UPGRADE for more detailed upgrade instructions.
 101
 102 For notes on 1.26.x and older releases, see HISTORY.
 103
 104 == Online documentation ==
 105
 106 Documentation for both end-users and site administrators is available on
 107 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 108 for pages that explicitly state that their contents are in the public domain):
 109
 110        https://www.mediawiki.org/wiki/Documentation
 111
 112 == Mailing list ==
 113
 114 A mailing list is available for MediaWiki user support and discussion:
 115
 116        https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 117
 118 A low-traffic announcements-only list is also available:
 119
 120        https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 121
 122 It's highly recommended that you sign up for one of these lists if you're
 123 going to run a public MediaWiki, so you can be notified of security fixes.
 124
 125 == IRC help ==
 126
 127 There's usually someone online in #mediawiki on irc.freenode.net.