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