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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\Component\Form\Util;
- /**
- * @author Bernhard Schussek <bschussek@gmail.com>
- */
- class FormUtil
- {
- /**
- * This class should not be instantiated.
- */
- private function __construct()
- {
- }
- /**
- * Returns whether the given data is empty.
- *
- * This logic is reused multiple times throughout the processing of
- * a form and needs to be consistent. PHP keyword `empty` cannot
- * be used as it also considers 0 and "0" to be empty.
- *
- * @param mixed $data
- *
- * @return bool
- */
- public static function isEmpty($data)
- {
- // Should not do a check for [] === $data!!!
- // This method is used in occurrences where arrays are
- // not considered to be empty, ever.
- return null === $data || '' === $data;
- }
- }
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