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- 27.04.2026
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FileExistenceResource.php
01 <?php
02
03 /*
04 * This file is part of the Symfony package.
05 *
06 * (c) Fabien Potencier <fabien@symfony.com>
07 *
08 * For the full copyright and license information, please view the LICENSE
09 * file that was distributed with this source code.
10 */
11
12 namespace Symfony\Component\Config\Resource;
13
14 /**
15 * FileExistenceResource represents a resource stored on the filesystem.
16 * Freshness is only evaluated against resource creation or deletion.
17 *
18 * The resource can be a file or a directory.
19 *
20 * @author Charles-Henri Bruyand <charleshenri.bruyand@gmail.com>
21 */
22 class FileExistenceResource implements SelfCheckingResourceInterface, \Serializable
23 {
24 private $resource;
25
26 private $exists;
27
28 /**
29 * @param string $resource The file path to the resource
30 */
31 public function __construct($resource)
32 {
33 $this->resource = (string) $resource;
34 $this->exists = file_exists($resource);
35 }
36
37 /**
38 * {@inheritdoc}
39 */
40 public function __toString()
41 {
42 return $this->resource;
43 }
44
45 /**
46 * @return string The file path to the resource
47 */
48 public function getResource()
49 {
50 return $this->resource;
51 }
52
53 /**
54 * {@inheritdoc}
55 */
56 public function isFresh($timestamp)
57 {
58 return file_exists($this->resource) === $this->exists;
59 }
60
61 /**
62 * @internal
63 */
64 public function serialize()
65 {
66 return serialize([$this->resource, $this->exists]);
67 }
68
69 /**
70 * @internal
71 */
72 public function unserialize($serialized)
73 {
74 list($this->resource, $this->exists) = unserialize($serialized);
75 }
76 }
77