<?php

namespace MediaWiki\Cache\Hook;

// phpcs:disable Squiz.Classes.ValidClassName.NotCamelCaps
/**
 * This is a hook handler interface, see docs/Hooks.md.
 * Use the hook name "MessageCache::get" to register handlers implementing this interface.
 *
 * @stable to implement
 * @ingroup Hooks
 */
interface MessageCache__getHook {
	/**
	 * This hook is called when fetching a message. Use this hook to override the key
	 * for customisations. Given and returned message key must be formatted with:
	 * 1) the first letter in lower case according to the content language
	 * 2) spaces replaced with underscores
	 *
	 * @since 1.35
	 *
	 * @param string &$key Message key
	 * @return bool|void True or no return value to continue or false to abort
	 */
	public function onMessageCache__get( &$key );
}