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* * 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 */ 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's keyword `empty` cannot * be used as it also considers 0 and "0" to be empty. * * @param mixed $data * * @return Boolean */ public static function isEmpty($data) { // Should not do a check for array() === $data!!! // This method is used in occurrences where arrays are // not considered to be empty, ever. return null === $data || '' === $data; } }