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
  21 === New features in 1.27 ===
  22 * $wgDataCenterId and $wgDataCenterRoles where added, which will serve as
  23   basic configuration settings needed for multi-datacenter setups.
  24   $wgDataCenterUpdateStickTTL was also added.
  25 * Added a new hook, 'UserMailerTransformContent', to transform the contents
  26   of an email. This is similar to the EmailUser hook but applies to all mail
  27   sent via UserMailer.
  28 * Added a new hook, 'UserMailerTransformMessage', to transform the contents
  29   of an emai after MIME encoding.
  30 * Added a new hook, 'UserMailerSplitTo', to control which users have to be
  31   emailed separately (ie. there is a single address in the To: field) so
  32   user-specific changes to the email can be applied safely.
  33 * $wgCdnMaxageLagged was added, which limits the CDN cache TTL
  34   when any load balancer uses a DB that is lagged beyond the 'max lag'
  35   setting in the relevant section of $wgLBFactoryConf.
  36
  37 ==== External libraries ====
  38
  39 === Bug fixes in 1.27 ===
  40
  41 === Action API changes in 1.27 ===
  42 * Added list=allrevisions.
  43
  44 === Action API internal changes in 1.27 ===
  45
  46 === Languages updated in 1.27 ===
  47
  48 MediaWiki supports over 350 languages. Many localisations are updated
  49 regularly. Below only new and removed languages are listed, as well as
  50 changes to languages because of Bugzilla reports.
  51
  52
  53 === Other changes in 1.27 ===
  54
  55
  56 == Compatibility ==
  57
  58 MediaWiki 1.27 requires PHP 5.3.3 or later. There is experimental support for
  59 HHVM 3.3.0.
  60
  61 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
  62 support for them is somewhat less mature. There is experimental support for
  63 Oracle and Microsoft SQL Server.
  64
  65 The supported versions are:
  66
  67 * MySQL 5.0.3 or later
  68 * PostgreSQL 8.3 or later
  69 * SQLite 3.3.7 or later
  70 * Oracle 9.0.1 or later
  71 * Microsoft SQL Server 2005 (9.00.1399)
  72
  73 == Upgrading ==
  74
  75 1.27 has several database changes since 1.26, and will not work without schema
  76 updates. Note that due to changes to some very large tables like the revision
  77 table, the schema update may take quite long (minutes on a medium sized site,
  78 many hours on a large site).
  79
  80 If upgrading from before 1.11, and you are using a wiki as a commons
  81 repository, make sure that it is updated as well. Otherwise, errors may arise
  82 due to database schema changes.
  83
  84 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
  85 new database fields are filled with data.
  86
  87 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
  88 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
  89 with MediaWiki 1.21.
  90
  91 Don't forget to always back up your database before upgrading!
  92
  93 See the file UPGRADE for more detailed upgrade instructions.
  94
  95 For notes on 1.26.x and older releases, see HISTORY.
  96
  97 == Online documentation ==
  98
  99 Documentation for both end-users and site administrators is available on
 100 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 101 for pages that explicitly state that their contents are in the public domain):
 102
 103        https://www.mediawiki.org/wiki/Documentation
 104
 105 == Mailing list ==
 106
 107 A mailing list is available for MediaWiki user support and discussion:
 108
 109        https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 110
 111 A low-traffic announcements-only list is also available:
 112
 113        https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 114
 115 It's highly recommended that you sign up for one of these lists if you're
 116 going to run a public MediaWiki, so you can be notified of security fixes.
 117
 118 == IRC help ==
 119
 120 There's usually someone online in #mediawiki on irc.freenode.net.