/usr/share/php/Symfony/Component/Cache/Simple/NullCache.php is in php-symfony-cache 3.4.6+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*
* 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\Cache\Simple;
use Psr\SimpleCache\CacheInterface;
/**
* @author Nicolas Grekas <p@tchwork.com>
*/
class NullCache implements CacheInterface
{
/**
* {@inheritdoc}
*/
public function get($key, $default = null)
{
return $default;
}
/**
* {@inheritdoc}
*/
public function getMultiple($keys, $default = null)
{
foreach ($keys as $key) {
yield $key => $default;
}
}
/**
* {@inheritdoc}
*/
public function has($key)
{
return false;
}
/**
* {@inheritdoc}
*/
public function clear()
{
return true;
}
/**
* {@inheritdoc}
*/
public function delete($key)
{
return true;
}
/**
* {@inheritdoc}
*/
public function deleteMultiple($keys)
{
return true;
}
/**
* {@inheritdoc}
*/
public function set($key, $value, $ttl = null)
{
return false;
}
/**
* {@inheritdoc}
*/
public function setMultiple($values, $ttl = null)
{
return false;
}
}
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