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<?php
declare(strict_types=1);
namespace DERHANSEN\SfEventMgt\Utility;
/*
* This file is part of the Extension "sf_event_mgt" for TYPO3 CMS.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*/
use TYPO3\CMS\Core\Utility\GeneralUtility;
/**
* Class MiscUtility
class MiscUtility
{
* Returns chars extracted from a hmac for the challenge/response spam check
* @param int $eventUid
* @return string
public static function getSpamCheckChallenge(int $eventUid): string
$hmac = GeneralUtility::hmac('event-' . $eventUid, 'sf_event_mgt');
$chars = preg_replace('/[0-9]+/', '', $hmac);
return preg_replace_callback('/\w.?/', function ($m) {
return ucfirst($m[0]);
}, $chars);
}
derhansen /
sf_event_mgt
