Edit File: CallbackInterface.php
<?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\Contracts\Cache; use Psr\Cache\CacheItemInterface; /** * Computes and returns the cached value of an item. * * @author Nicolas Grekas <p@tchwork.com> */ interface CallbackInterface { /** * @param CacheItemInterface|ItemInterface $item The item to compute the value for * @param bool &$save Should be set to false when the value should not be saved in the pool * * @return mixed The computed value for the passed item */ public function __invoke(CacheItemInterface $item, bool &$save); }