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