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<?php
declare(strict_types=1);
/*
* This file is part of the TYPO3 CMS project.
*
* It is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, either version 2
* of the License, or any later version.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*
* The TYPO3 project - inspiring people to share!
*/
namespace TYPO3\CMS\Frontend\Utility;
use Psr\Http\Message\ServerRequestInterface;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Core\Utility\HttpUtility;
use TYPO3\CMS\Frontend\Page\CacheHashCalculator;
class CanonicalizationUtility
{
/**
* Get all params that are not needed to determine a canonicalized URL
*
* The format of the additionalCanonicalizedUrlParameters is:
* $parameters = [
* 'foo',
* 'bar',
* 'foo[bar]'
* ]
*
* @param int $pageId Id of the page you want to get the excluded params
* @param array $additionalCanonicalizedUrlParameters Which GET-params should stay besides the params used for cHash calculation
*/
public static function getParamsToExcludeForCanonicalizedUrl(int $pageId, array $additionalCanonicalizedUrlParameters = []): array
{
$cacheHashCalculator = GeneralUtility::makeInstance(CacheHashCalculator::class);
$GET = ($GLOBALS['TYPO3_REQUEST'] instanceof ServerRequestInterface) ? $GLOBALS['TYPO3_REQUEST']->getQueryParams() : [];
$GET['id'] = $pageId;
$queryString = HttpUtility::buildQueryString($GET, '&');
$cHashArray = $cacheHashCalculator->getRelevantParameters($queryString);
// By exploding the earlier imploded array, we get the flat array with URL params
$urlParameters = GeneralUtility::explodeUrl2Array($queryString);
$paramsToExclude = array_keys(
array_diff(
$urlParameters,
$cHashArray
)
);
return array_diff($paramsToExclude, $additionalCanonicalizedUrlParameters);
}
}