GetLangPreferredVariantHook.php
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GetLangPreferredVariantHook.php
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	<?php

	namespace MediaWiki\Hook;

	/**
	* This is a hook handler interface, see docs/Hooks.md.
	* Use the hook name "GetLangPreferredVariant" to register handlers implementing this interface.
	*
	* @stable to implement
	* @ingroup Hooks
	*/
	interface GetLangPreferredVariantHook {
	/**
	* This hook is called in LanguageConverter#getPreferredVariant() to
	* allow fetching the language variant code from cookies or other such
	* alternative storage.
	*
	* @since 1.35
	*
	* @param string\|null &$req Language variant from the URL or null if no variant
	* was specified in the URL; the value of this variable comes from
	* LanguageConverter#getURLVariant()
	* @return bool\|void True or no return value to continue or false to abort
	*/
	public function onGetLangPreferredVariant( &$req );
	}