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<?php
declare(strict_types=1);
namespace Facile\OpenIDClient;
use function base64_decode;
use Facile\OpenIDClient\Exception\RuntimeException;
use function str_pad;
use function strlen;
use function strtr;
function base64url_decode(string $data): string
{
$decoded = base64_decode(str_pad(strtr($data, '-_', '+/'), strlen($data) % 4, '='), true);
if (false === $decoded) {
throw new RuntimeException('Unable to base64url_decode');
}
return $decoded;
facile-it /
php-openid-client
