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- <?php
- /*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
- namespace Symfony\Polyfill\Php54;
- /**
- * @author Nicolas Grekas <p@tchwork.com>
- *
- * @internal
- */
- final class Php54
- {
- public static function hex2bin($data)
- {
- $len = strlen($data);
- if (null === $len) {
- return;
- }
- if ($len % 2) {
- trigger_error('hex2bin(): Hexadecimal input string must have an even length', E_USER_WARNING);
- return false;
- }
- $data = pack('H*', $data);
- if (false !== strpos($data, "\0")) {
- return false;
- }
- return $data;
- }
- }
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