The current version of MediaWiki (e.g, "1.44.0"). You shouldn't need to set this option; it is used internally.
MediaWiki version:≥ 1.35
Starting with MediaWiki 1.35, $wgVersion is deprecated, and replaced with the MW_VERSION 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. $wgVersion will continue to function the same as before in those versions.
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:
global $wgVersion;
$oldVersion = version_compare( $wgVersion, '1.18', '<=' );
if ( $oldVersion ) {
# Do stuff for MediaWiki 1.18 and older
} else {
# Do stuff for MediaWiki 1.19+
}
MediaWiki version:
≥ 1.35
$oldVersion = version_compare( MW_VERSION, '1.39', '<' );
if ( $oldVersion ) {
# Do stuff for MediaWiki 1.35 - 1.38
} else {
# Do stuff for MediaWiki 1.39+
}
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.
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