PHP StringUtil::getHash方法代码示例

 /**
  * @see	\wcf\system\worker\IWorker::validate()
  */
 public function validate()
 {
     WCF::getSession()->checkPermissions(array('admin.system.canImportData'));
     if (!isset($this->parameters['objectType'])) {
         throw new SystemException("parameter 'objectType' missing");
     }
     // get import data
     $this->importData = WCF::getSession()->getVar('importData');
     if ($this->importData === null) {
         throw new SystemException("import data missing");
     }
     // get exporter
     $this->exporter = ObjectTypeCache::getInstance()->getObjectTypeByName('com.woltlab.wcf.exporter', $this->importData['exporterName'])->getProcessor();
     // set data
     $this->exporter->setData($this->importData['dbHost'], $this->importData['dbUser'], $this->importData['dbPassword'], $this->importData['dbName'], $this->importData['dbPrefix'], $this->importData['fileSystemPath'], $this->importData['additionalData']);
     $this->exporter->init();
     // set user merge mode
     ImportHandler::getInstance()->setUserMergeMode($this->importData['userMergeMode']);
     // set import hash
     ImportHandler::getInstance()->setImportHash(substr(StringUtil::getHash($this->importData['dbHost'] . $this->importData['dbName'] . $this->importData['dbPrefix']), 0, 8));
 }

	/**
	 * Writes an error to log file.
	 */
	protected function logError() {
		$logFile = WCF_DIR . 'log/' . date('Y-m-d', TIME_NOW) . '.txt';
		
		// try to create file
		@touch($logFile);
		
		// validate if file exists and is accessible for us
		if (!file_exists($logFile) || !is_writable($logFile)) {
			/*
				We cannot recover if we reached this point, the server admin
				is urged to fix his pretty much broken configuration.
				
				GLaDOS: Look at you, sailing through the air majestically, like an eagle... piloting a blimp.
			*/
			return;
		}
		
		$e = ($this->getPrevious() ?: $this);
		
		$message = date('r', TIME_NOW)."\n".
			'Message: '.$e->getMessage()."\n".
			'File: '.$e->getFile().' ('.$e->getLine().")\n".
			'PHP version: '.phpversion()."\n".
			'WCF version: '.WCF_VERSION."\n".
			'Request URI: '.(isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : '')."\n".
			'Referrer: '.(isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '')."\n".
			"Stacktrace: \n ".implode("\n  ", explode("\n", $e->getTraceAsString()))."\n";
		
		// calculate Exception-ID
		$id = StringUtil::getHash($message);
		$message = "<<<<<<<<".$id."<<<<\n".$message."<<<<\n\n";
		
		// append
		@file_put_contents($logFile, $message, FILE_APPEND);
		
		return $id;
	}

 /**
  * @see	wcf\action\IAction::execute()
  */
 public function execute()
 {
     //parent::execute();  //!!!
     $this->readParameters();
     //!!!
     // set active menu item (for error messages)
     //PageMenu::getInstance()->setActiveMenuItem('wbb.header.menu.board');
     // build conditions
     $sql = '';
     $conditionBuilder = new PreparedStatementConditionBuilder();
     switch ($this->mode) {
         case 'unreadPosts':
             $conditionBuilder->add('thread.boardID IN (?)', array($this->boardIDs));
             $conditionBuilder->add('thread.lastPostTime > ?', array(VisitTracker::getInstance()->getVisitTime('com.woltlab.wbb.thread')));
             $conditionBuilder->add('thread.isDeleted = 0');
             $conditionBuilder->add('thread.isDisabled = 0');
             $conditionBuilder->add('thread.movedThreadID IS NULL');
             $conditionBuilder->add('(thread.lastPostTime > tracked_thread_visit.visitTime OR tracked_thread_visit.visitTime IS NULL)');
             $conditionBuilder->add('(thread.lastPostTime > tracked_board_visit.visitTime OR tracked_board_visit.visitTime IS NULL)');
             if (LanguageFactory::getInstance()->multilingualismEnabled() && count(WCF::getUser()->getLanguageIDs())) {
                 $conditionBuilder->add('(thread.languageID IN (?) OR thread.languageID IS NULL)', array(WCF::getUser()->getLanguageIDs()));
             }
             $conditionBuilder->add('thread.isAnnouncement = 0');
             //!!!
             $sql = "SELECT\t\tthread.threadID\n\t\t\t\t\tFROM\t\twbb" . WCF_N . "_thread thread\n\t\t\t\t\tLEFT JOIN\twcf" . WCF_N . "_tracked_visit tracked_thread_visit\n\t\t\t\t\tON\t\t(tracked_thread_visit.objectTypeID = " . VisitTracker::getInstance()->getObjectTypeID('com.woltlab.wbb.thread') . " AND tracked_thread_visit.objectID = thread.threadID AND tracked_thread_visit.userID = " . WCF::getUser()->userID . ")\n\t\t\t\t\tLEFT JOIN\twcf" . WCF_N . "_tracked_visit tracked_board_visit\n\t\t\t\t\tON\t\t(tracked_board_visit.objectTypeID = " . VisitTracker::getInstance()->getObjectTypeID('com.woltlab.wbb.board') . " AND tracked_board_visit.objectID = thread.boardID AND tracked_board_visit.userID = " . WCF::getUser()->userID . ")\n\t\t\t\t\t" . $conditionBuilder . "\n\t\t\t\t\tORDER BY\tthread.lastPostTime DESC";
             $exttMbqSqlCount = "SELECT\t\tcount(thread.threadID) as totalNum\n\t\t\t\t\tFROM\t\twbb" . WCF_N . "_thread thread\n\t\t\t\t\tLEFT JOIN\twcf" . WCF_N . "_tracked_visit tracked_thread_visit\n\t\t\t\t\tON\t\t(tracked_thread_visit.objectTypeID = " . VisitTracker::getInstance()->getObjectTypeID('com.woltlab.wbb.thread') . " AND tracked_thread_visit.objectID = thread.threadID AND tracked_thread_visit.userID = " . WCF::getUser()->userID . ")\n\t\t\t\t\tLEFT JOIN\twcf" . WCF_N . "_tracked_visit tracked_board_visit\n\t\t\t\t\tON\t\t(tracked_board_visit.objectTypeID = " . VisitTracker::getInstance()->getObjectTypeID('com.woltlab.wbb.board') . " AND tracked_board_visit.objectID = thread.boardID AND tracked_board_visit.userID = " . WCF::getUser()->userID . ")\n\t\t\t\t\t" . $conditionBuilder;
             break;
             /*
             case 'undoneThreads':
             	$boardIDs = array();
             	foreach ($this->boardIDs as $boardID) {
             		if (BoardCache::getInstance()->getBoard($boardID)->enableMarkingAsDone) $boardIDs[] = $boardID;
             	}
             	if (empty($boardIDs)) {
             		throw new NamedUserException(WCF::getLanguage()->getDynamicVariable('wcf.search.error.noMatches', array('query' => '')));
             	}
             	
             	$conditionBuilder->add('thread.boardID IN (?)', array($boardIDs));
             	$conditionBuilder->add('thread.isDone = 0');
             	$conditionBuilder->add('thread.isDeleted = 0');
             	$conditionBuilder->add('thread.isDisabled = 0');
             	$conditionBuilder->add('thread.movedThreadID IS NULL');
             	if (LanguageFactory::getInstance()->multilingualismEnabled() && count(WCF::getUser()->getLanguageIDs())) {
             		$conditionBuilder->add('(thread.languageID IN (?) OR thread.languageID IS NULL)', array(WCF::getUser()->getLanguageIDs()));
             	}
             	
             	$sql = "SELECT		thread.threadID
             		FROM		wbb".WCF_N."_thread thread
             		".$conditionBuilder."		
             		ORDER BY	thread.lastPostTime DESC";
             break;
             */
     }
     // build search hash
     $searchHash = StringUtil::getHash($sql);
     // execute query
     $matches = array();
     $statement = WCF::getDB()->prepareStatement($sql, $this->exttMbqNumPerPage, $this->exttMbqStartNum);
     $statement->execute($conditionBuilder->getParameters());
     while ($row = $statement->fetchArray()) {
         $matches[] = array('objectID' => $row['threadID'], 'objectType' => 'com.woltlab.wbb.post');
     }
     //get total count
     $exttMbqStatementCount = WCF::getDB()->prepareStatement($exttMbqSqlCount);
     $exttMbqStatementCount->execute($conditionBuilder->getParameters());
     while ($exttMbqRecord = $exttMbqStatementCount->fetchArray()) {
         $exttMbqTotal = $exttMbqRecord['totalNum'];
     }
     // check result
     /*
     if (!count($matches)) {
     	throw new NamedUserException(WCF::getLanguage()->getDynamicVariable('wcf.search.error.noMatches', array('query' => '')));
     }
     */
     // save result in database
     $searchData = array('packageID' => PACKAGE_ID, 'query' => '', 'results' => $matches, 'additionalData' => array('com.woltlab.wbb.post' => array('findThreads' => 1)), 'sortOrder' => 'DESC', 'sortField' => 'time', 'objectTypes' => array('com.woltlab.wbb.post'));
     $searchData = serialize($searchData);
     $search = SearchEditor::create(array('userID' => WCF::getUser()->userID ?: null, 'searchData' => $searchData, 'searchTime' => TIME_NOW, 'searchType' => 'messages', 'searchHash' => $searchHash));
     // forward to result page
     //HeaderUtil::redirect(LinkHandler::getInstance()->getLink('SearchResult', array('id' => $search->searchID)));
     //exit;
     $exttMbqRetIds = array();
     foreach ($matches as $exttMbqTopicId) {
         $exttMbqRetIds[] = $exttMbqTopicId['objectID'];
     }
     return array('total' => $exttMbqTotal, 'topicIds' => $exttMbqRetIds);
 }

 /**
  * @see	\wcf\form\IForm::validate()
  */
 public function validate()
 {
     parent::validate();
     // get search conditions
     $this->getConditions();
     // check query and author
     if (empty($this->query) && empty($this->username) && !$this->userID) {
         throw new UserInputException('q');
     }
     // build search hash
     $this->searchHash = StringUtil::getHash(serialize(array($this->query, $this->selectedObjectTypes, !$this->subjectOnly, $this->searchIndexCondition, $this->additionalConditions, $this->sortField . ' ' . $this->sortOrder, PACKAGE_ID)));
     // check search hash
     if (!empty($this->query)) {
         $parameters = array($this->searchHash, 'messages', TIME_NOW - 1800);
         if (WCF::getUser()->userID) {
             $parameters[] = WCF::getUser()->userID;
         }
         $sql = "SELECT\tsearchID\n\t\t\t\tFROM\twcf" . WCF_N . "_search\n\t\t\t\tWHERE\tsearchHash = ?\n\t\t\t\t\tAND searchType = ?\n\t\t\t\t\tAND searchTime > ?\n\t\t\t\t\t" . (WCF::getUser()->userID ? 'AND userID = ?' : 'AND userID IS NULL');
         $statement = WCF::getDB()->prepareStatement($sql);
         $statement->execute($parameters);
         $row = $statement->fetchArray();
         if ($row !== false) {
             HeaderUtil::redirect(LinkHandler::getInstance()->getLink('SearchResult', array('id' => $row['searchID']), 'highlight=' . urlencode($this->query)));
             exit;
         }
     }
     // do search
     $this->results = SearchEngine::getInstance()->search($this->query, $this->selectedObjectTypes, $this->subjectOnly, $this->searchIndexCondition, $this->additionalConditions, $this->sortField . ' ' . $this->sortOrder);
     // result is empty
     if (empty($this->results)) {
         $this->throwNoMatchesException();
     }
 }

 /**
  * Returns the hash for an matched code bbcode in the message.
  * 
  * @param	array		$matches
  * @return	string
  */
 protected function cacheCodesCallback($matches)
 {
     // create hash
     $hash = '@@' . StringUtil::getHash(uniqid(microtime()) . $matches[3]) . '@@';
     // build tag
     $tag = $this->buildTag($matches[1]);
     $tag['content'] = $matches[3];
     // save tag
     $this->cachedCodes[$hash] = $tag;
     return $hash;
 }

 /**
  * Exports labels.
  */
 public function exportLabels($offset, $limit)
 {
     $prefixMap = array();
     // get global prefixes
     $globalPrefixes = '';
     $sql = "SELECT\toptionValue\n\t\t\tFROM\twcf" . $this->dbNo . "_option\n\t\t\tWHERE\toptionName = ?";
     $statement = $this->database->prepareStatement($sql);
     $statement->execute(array('thread_default_prefixes'));
     $row = $statement->fetchArray();
     if ($row !== false) {
         $globalPrefixes = $row['optionValue'];
     }
     // get boards
     if (substr($this->getPackageVersion('com.woltlab.wcf'), 0, 3) == '1.1') {
         $sql = "SELECT\t\tboardID, prefixes, prefixMode\n\t\t\t\tFROM\t\twbb" . $this->dbNo . "_" . $this->instanceNo . "_board\n\t\t\t\tWHERE\t\tprefixMode > ?";
         $statement = $this->database->prepareStatement($sql);
         $statement->execute(array(0));
     } else {
         $sql = "SELECT\t\tboardID, prefixes, 2 AS prefixMode\n\t\t\t\tFROM\t\twbb" . $this->dbNo . "_" . $this->instanceNo . "_board\n\t\t\t\tWHERE\t\tprefixes <> ?";
         $statement = $this->database->prepareStatement($sql);
         $statement->execute(array(''));
     }
     while ($row = $statement->fetchArray()) {
         $prefixes = '';
         switch ($row['prefixMode']) {
             case 1:
                 $prefixes = $globalPrefixes;
                 break;
             case 2:
                 $prefixes = $row['prefixes'];
                 break;
             case 3:
                 $prefixes = $globalPrefixes . "\n" . $row['prefixes'];
                 break;
         }
         $prefixes = StringUtil::trim(StringUtil::unifyNewlines($prefixes));
         if ($prefixes) {
             $key = StringUtil::getHash($prefixes);
             if (!isset($prefixMap[$key])) {
                 $prefixMap[$key] = array('prefixes' => $prefixes, 'boardIDs' => array());
             }
             $boardID = ImportHandler::getInstance()->getNewID('com.woltlab.wbb.board', $row['boardID']);
             if ($boardID) {
                 $prefixMap[$key]['boardIDs'][] = $boardID;
             }
         }
     }
     // save prefixes
     if (!empty($prefixMap)) {
         $i = 1;
         $objectType = ObjectTypeCache::getInstance()->getObjectTypeByName('com.woltlab.wcf.label.objectType', 'com.woltlab.wbb.board');
         foreach ($prefixMap as $key => $data) {
             // import label group
             ImportHandler::getInstance()->getImporter('com.woltlab.wcf.label.group')->import($key, array('groupName' => 'labelgroup' . $i), array('objects' => array($objectType->objectTypeID => $data['boardIDs'])));
             // import labels
             $labels = explode("\n", $data['prefixes']);
             foreach ($labels as $label) {
                 ImportHandler::getInstance()->getImporter('com.woltlab.wcf.label')->import($key . '-' . $label, array('groupID' => $key, 'label' => mb_substr($label, 0, 80)));
             }
             $i++;
         }
     }
 }

 /**
  * Sends the mail notification.
  * 
  * @param	\wcf\data\user\notification\UserNotification			$notification
  * @param	\wcf\data\user\User						$user
  * @param	\wcf\system\user\notification\event\IUserNotificationEvent	$event
  */
 public function sendInstantMailNotification(UserNotification $notification, User $user, IUserNotificationEvent $event)
 {
     // no notifications for disabled or banned users
     if ($user->activationCode) {
         return;
     }
     if ($user->banned) {
         return;
     }
     // recipient's language
     $event->setLanguage($user->getLanguage());
     // add mail header
     $message = $user->getLanguage()->getDynamicVariable('wcf.user.notification.mail.header', array('user' => $user)) . "\n\n";
     // get message
     $message .= $event->getEmailMessage();
     // append notification mail footer
     $token = $user->notificationMailToken;
     if (!$token) {
         // generate token if not present
         $token = mb_substr(StringUtil::getHash(serialize(array($user->userID, StringUtil::getRandomID()))), 0, 20);
         $editor = new UserEditor($user);
         $editor->update(array('notificationMailToken' => $token));
     }
     $message .= "\n\n" . $user->getLanguage()->getDynamicVariable('wcf.user.notification.mail.footer', array('user' => $user, 'token' => $token, 'notification' => $notification));
     // build mail
     $mail = new Mail(array($user->username => $user->email), $user->getLanguage()->getDynamicVariable('wcf.user.notification.mail.subject', array('title' => $event->getEmailTitle())), $message);
     $mail->setLanguage($user->getLanguage());
     $mail->send();
 }

 /**
  * Creates a conversation id out of the old rootLevel
  * and the participants.
  * 
  * This ensures that only the actual receivers of a pm
  * are able to see it after import, while minimizing the
  * number of conversations.
  */
 private function getConversationID($rootLevel, array $participants)
 {
     $conversationID = $rootLevel;
     $participants = array_unique($participants);
     sort($participants);
     $conversationID .= '-' . implode(',', $participants);
     return StringUtil::getHash($conversationID);
 }

 /**
  * Loads group data from cache.
  */
 protected function loadGroupData()
 {
     if ($this->groupData !== null) {
         return;
     }
     // work-around for setup process (package wcf does not exist yet)
     if (!PACKAGE_ID) {
         $groupIDs = array();
         $sql = "SELECT\tgroupID\n\t\t\t\tFROM\twcf" . WCF_N . "_user_to_group\n\t\t\t\tWHERE\tuserID = ?";
         $statement = WCF::getDB()->prepareStatement($sql);
         $statement->execute(array($this->user->userID));
         while ($row = $statement->fetchArray()) {
             $groupIDs[] = $row['groupID'];
         }
     } else {
         $groupIDs = $this->user->getGroupIDs();
     }
     $groups = implode(',', $groupIDs);
     $groupsFileName = StringUtil::getHash($groups);
     // register cache resource
     $cacheName = 'groups-' . PACKAGE_ID . '-' . $groups;
     CacheHandler::getInstance()->addResource($cacheName, WCF_DIR . 'cache/cache.groups-' . PACKAGE_ID . '-' . $groupsFileName . '.php', 'wcf\\system\\cache\\builder\\UserGroupPermissionCacheBuilder');
     // get group data from cache
     $this->groupData = CacheHandler::getInstance()->get($cacheName);
     if (isset($this->groupData['groupIDs']) && $this->groupData['groupIDs'] != $groups) {
         $this->groupData = array();
     }
 }

 /**
  * Returns the hash for an matched e-mail in the message.
  * 
  * @param	array		$matches
  * @return	string
  */
 protected function cacheEmailsCallback($matches)
 {
     $hash = '@@' . StringUtil::getHash(uniqid(microtime()) . $matches[0]) . '@@';
     $this->cachedEmails[$hash] = $matches[0];
     return $hash;
 }

 /**
  * @see \wcf\system\bbcode\IBBCode::getParsedTag()
  */
 public function getParsedTag(array $openingTag, $content, array $closingTag, BBCodeParser $parser)
 {
     // copyright
     TeraliosBBCodesCopyright::callCopyright();
     $content = StringUtil::trim($content);
     // check controller for parsing foot notes.
     if (static::$parse == null) {
         static::parseFootnotes();
     }
     // footnote and fn parse.
     if ($openingTag['name'] == 'fn') {
         if (self::$parse == true) {
             // no content and no index for content tag: drop footnote.
             $content = StringUtil::trim($content);
             if (empty($content) && !isset($openingTag['attributes'][0])) {
                 return '';
             }
             // build hash from content or use index for content attribute
             $hash = !empty($content) ? StringUtil::getHash($content) : StringUtil::getHash($openingTag['attributes'][0]);
             // check footnotes for existing.
             if (!isset(static::$footnotes[$hash])) {
                 // check for buffred content.
                 if (empty($content) && isset(static::$footnoteContent[$hash])) {
                     $content = static::$footnoteContent[$hash];
                 }
                 $footnoteIndex = FootnoteMap::getInstance()->add($content, Footnote::TYPE_BBCODE);
                 static::$footnotes[$hash] = $footnoteIndex;
             } else {
                 $footnoteIndex = static::$footnotes[$hash];
             }
             // get index for tag attribute.
             $footnoteTagIndex = Footnote::getTagIndex($footnoteIndex);
         } else {
             $footnoteTagIndex = '';
             $footnoteIndex = static::$indexNoParse;
             ++static::$indexNoParse;
         }
         WCF::getTPL()->assign(array('footnoteTagID' => $footnoteTagIndex, 'footnoteIndex' => $footnoteIndex));
         return WCF::getTPL()->fetch('footnoteBBCode');
     } else {
         if ($openingTag['name'] == 'fnc') {
             if (static::$parse == false) {
                 return '';
             }
             $contentIndex = StringUtil::getHash($openingTag['attributes'][0]);
             // set content or buffered.
             if (isset(static::$footnotes[$contentIndex])) {
                 $index = static::$footnotes[$contentIndex];
                 $footnote = FootnoteMap::getInstance()->getFootnote($index);
                 if ($footnote != false) {
                     $footnote->setText(StringUtil::trim($content), Footnote::TYPE_HTML);
                 }
             } else {
                 static::$footnoteContent[$contentIndex] = $content;
             }
             return '';
         }
     }
 }

//.........这里部分代码省略.........
     $statement2 = WCF::getDB()->prepareStatement($sql);
     $statement2->execute($conditions->getParameters());
     // collect data
     $eventsToUser = $objectTypes = $eventIDs = $notificationObjects = array();
     $availableObjectTypes = UserNotificationHandler::getInstance()->getAvailableObjectTypes();
     while ($row = $statement->fetchArray()) {
         if (!isset($eventsToUser[$row['userID']])) {
             $eventsToUser[$row['userID']] = array();
         }
         $eventsToUser[$row['userID']][] = $row['notificationID'];
         // cache object types
         if (!isset($objectTypes[$row['objectType']])) {
             $objectTypes[$row['objectType']] = array('objectType' => $availableObjectTypes[$row['objectType']], 'objectIDs' => array(), 'objects' => array());
         }
         $objectTypes[$row['objectType']]['objectIDs'][] = $row['objectID'];
         $eventIDs[] = $row['eventID'];
         $notificationObjects[$row['notificationID']] = new UserNotification(null, $row);
     }
     // load authors
     $conditions = new PreparedStatementConditionBuilder();
     $conditions->add("notificationID IN (?)", array(array_keys($notificationObjects)));
     $sql = "SELECT\t\tnotificationID, authorID\n\t\t\tFROM\t\twcf" . WCF_N . "_user_notification_author\n\t\t\t" . $conditions . "\n\t\t\tORDER BY\ttime ASC";
     $statement = WCF::getDB()->prepareStatement($sql);
     $statement->execute($conditions->getParameters());
     $authorIDs = $authorToNotification = array();
     while ($row = $statement->fetchArray()) {
         if ($row['authorID']) {
             $authorIDs[] = $row['authorID'];
         }
         if (!isset($authorToNotification[$row['notificationID']])) {
             $authorToNotification[$row['notificationID']] = array();
         }
         $authorToNotification[$row['notificationID']][] = $row['authorID'];
     }
     // load authors
     $authors = UserProfile::getUserProfiles($authorIDs);
     $unknownAuthor = new UserProfile(new User(null, array('userID' => null, 'username' => WCF::getLanguage()->get('wcf.user.guest'))));
     // load objects associated with each object type
     foreach ($objectTypes as $objectType => $objectData) {
         $objectTypes[$objectType]['objects'] = $objectData['objectType']->getObjectsByIDs($objectData['objectIDs']);
     }
     // load required events
     $eventList = new UserNotificationEventList();
     $eventList->getConditionBuilder()->add("user_notification_event.eventID IN (?)", array($eventIDs));
     $eventList->readObjects();
     $eventObjects = $eventList->getObjects();
     foreach ($eventsToUser as $userID => $events) {
         if (!isset($users[$userID])) {
             continue;
         }
         $user = $users[$userID];
         // no notifications for disabled or banned users
         if ($user->activationCode) {
             continue;
         }
         if ($user->banned) {
             continue;
         }
         // add mail header
         $message = $user->getLanguage()->getDynamicVariable('wcf.user.notification.mail.header', array('user' => $user));
         foreach ($events as $notificationID) {
             $notification = $notificationObjects[$notificationID];
             $className = $eventObjects[$notification->eventID]->className;
             $class = new $className($eventObjects[$notification->eventID]);
             $class->setObject($notification, $objectTypes[$notification->objectType]['objects'][$notification->objectID], isset($authors[$notification->authorID]) ? $authors[$notification->authorID] : $unknownAuthor, $notification->additionalData);
             $class->setLanguage($user->getLanguage());
             if (isset($authorToNotification[$notification->notificationID])) {
                 $eventAuthors = array();
                 foreach ($authorToNotification[$notification->notificationID] as $userID) {
                     if (!$userID) {
                         $eventAuthors[0] = $unknownAuthor;
                     } else {
                         if (isset($authors[$userID])) {
                             $eventAuthors[$userID] = $authors[$userID];
                         }
                     }
                 }
                 if (!empty($eventAuthors)) {
                     $class->setAuthors($eventAuthors);
                 }
             }
             $message .= "\n\n";
             $message .= $class->getEmailMessage('daily');
         }
         // append notification mail footer
         $token = $user->notificationMailToken;
         if (!$token) {
             // generate token if not present
             $token = mb_substr(StringUtil::getHash(serialize(array($user->userID, StringUtil::getRandomID()))), 0, 20);
             $editor = new UserEditor($user);
             $editor->update(array('notificationMailToken' => $token));
         }
         $message .= "\n\n";
         $message .= $user->getLanguage()->getDynamicVariable('wcf.user.notification.mail.daily.footer', array('user' => $user, 'token' => $token));
         // build mail
         $mail = new Mail(array($user->username => $user->email), $user->getLanguage()->getDynamicVariable('wcf.user.notification.mail.daily.subject', array('count' => count($events))), $message);
         $mail->setLanguage($user->getLanguage());
         $mail->send();
     }
 }

 /**
  * Returns a string with all line numbers
  * 
  * @param	string		$code
  * @param	integer		$start
  * @return	string
  */
 protected static function makeLineNumbers($code, $start, $split = "\n")
 {
     $lines = explode($split, $code);
     $lineNumbers = array();
     $i = -1;
     // find an unused codeID
     do {
         $codeID = mb_substr(StringUtil::getHash($code), 0, 6) . (++$i ? '_' . $i : '');
     } while (isset(self::$codeIDs[$codeID]));
     // mark codeID as used
     self::$codeIDs[$codeID] = true;
     for ($i = $start, $j = count($lines) + $start; $i < $j; $i++) {
         $lineNumbers[$i] = 'codeLine_' . $i . '_' . $codeID;
     }
     return $lineNumbers;
 }