wikimedia / mediawiki

			'remove-self' => []

		];

		if ( empty( $wgAddGroups[$group] ) ) {

			// Don't add anything to $groups

		} elseif ( $wgAddGroups[$group] === true ) {

			// You get everything

			$groups['add'] = self::getAllGroups();

		} elseif ( is_array( $wgAddGroups[$group] ) ) {

			$groups['add'] = $wgAddGroups[$group];

		}

		// Same thing for remove

		if ( empty( $wgRemoveGroups[$group] ) ) {

		}

		// Same thing for remove

		if ( empty( $wgRemoveGroups[$group] ) ) {

			// Do nothing

		} elseif ( $wgRemoveGroups[$group] === true ) {

			$groups['remove'] = self::getAllGroups();

		} elseif ( is_array( $wgRemoveGroups[$group] ) ) {

			$groups['remove'] = $wgRemoveGroups[$group];

		}

		// Re-map numeric keys of AddToSelf/RemoveFromSelf to the 'user' key for backwards compatibility

		if ( empty( $wgGroupsAddToSelf['user'] ) || $wgGroupsAddToSelf['user'] !== true ) {

		}

		// Now figure out what groups the user can add to him/herself

		if ( empty( $wgGroupsAddToSelf[$group] ) ) {

			// Do nothing

		} elseif ( $wgGroupsAddToSelf[$group] === true ) {

			// No idea WHY this would be used, but it's there

			$groups['add-self'] = User::getAllGroups();

		} elseif ( is_array( $wgGroupsAddToSelf[$group] ) ) {

			$groups['add-self'] = $wgGroupsAddToSelf[$group];

		}

		if ( empty( $wgGroupsRemoveFromSelf[$group] ) ) {

			// Do nothing

			$groups['add-self'] = $wgGroupsAddToSelf[$group];

		}

		if ( empty( $wgGroupsRemoveFromSelf[$group] ) ) {

			// Do nothing

		} elseif ( $wgGroupsRemoveFromSelf[$group] === true ) {

			$groups['remove-self'] = User::getAllGroups();

		} elseif ( is_array( $wgGroupsRemoveFromSelf[$group] ) ) {

			$groups['remove-self'] = $wgGroupsRemoveFromSelf[$group];

		}

		return $groups;

	}