1<?php
2
3/*
4 * This file is part of the Symfony package.
5 *
6 * (c) Fabien Potencier <fabien@symfony.com>
7 *
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
10 */
11
12namespace Symfony\Component\Config\Resource;
13
14/**
15 * ResourceInterface is the interface that must be implemented by all Resource classes.
16 *
17 * @author Fabien Potencier <fabien@symfony.com>
18 */
19interface ResourceInterface
20{
21    /**
22     * Returns a string representation of the Resource.
23     *
24     * This method is necessary to allow for resource de-duplication, for example by means
25     * of array_unique(). The string returned need not have a particular meaning, but has
26     * to be identical for different ResourceInterface instances referring to the same
27     * resource; and it should be unlikely to collide with that of other, unrelated
28     * resource instances.
29     *
30     * @return string A string representation unique to the underlying Resource
31     */
32    public function __toString();
33}
34