View source for Template:$wgVersion/en

<languages/>
{{SettingSummary
|name=Version
|version_min=1.2.0
|version_deprecated=1.35.0
|change_deprecated=481950
|sha_deprecated=a5d5ea82cad3
|section=General Settings
|range=(string)
|default=''Current MediaWiki version - you shouldn't change this!''
|summary=MediaWiki version number.
}}
== Details ==
The current version of MediaWiki (e.g, "{{MW stable release number}}").
You shouldn't need to set this option; it is used internally.

=== MW_VERSION ===
{{MW 1.35|+}}
Starting with MediaWiki 1.35, <code>$wgVersion</code> is deprecated, and replaced with the <code>MW_VERSION</code> constant.
It is also available in MediaWiki 1.31.7, 1.33.3 and 1.34.1, though this should not be relied on as its presence is required for some release tools.
<code>$wgVersion</code> will continue to function the same as before in those versions.

== Example code ==

If you're implementing a new feature that only works in MediaWiki 1.19 or later, but you want to maintain backwards compatibility, you could use a test such as the following:

<syntaxhighlight lang="php">
$oldVersion = version_compare( $wgVersion, '1.18', '<=' );
if ( $oldVersion ) {
    # Do stuff for MediaWiki 1.18 and older
} else {
    # Do stuff for MediaWiki 1.19 and newer
}
</syntaxhighlight>

However, it is typically recommended that you use feature detection to see whether the method or class you wish to use is available instead of depending upon raw version strings.

== See also ==
* [[Special:Version]] – view the version number of a MediaWiki installation (plus much more information) from the web interface.
* {{ll|Manual:Upgrading}}
* {{ll|Version}}