Classes List

Symfony\Component\Form\Util\FormUtil

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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's 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 array() === $data!!!
        // This method is used in occurrences where arrays are
        // not considered to be empty, ever.
        return null === $data || '' === $data;
    }
}