4 * This file is part of the Symfony package.
6 * (c) Fabien Potencier <fabien@symfony.com>
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
12 namespace Symfony\Component\Form\Util
;
15 * @author Bernhard Schussek <bschussek@gmail.com>
20 * This class should not be instantiated
22 private function __construct() {}
25 * Returns whether the given data is empty.
27 * This logic is reused multiple times throughout the processing of
28 * a form and needs to be consistent. PHP's keyword `empty` cannot
29 * be used as it also considers 0 and "0" to be empty.
35 public static function isEmpty($data)
37 // Should not do a check for array() === $data!!!
38 // This method is used in occurrences where arrays are
39 // not considered to be empty, ever.
40 return null === $data || '' === $data;