name : FileResource.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\Component\Config\Resource; /** * FileResource represents a resource stored on the filesystem. * * The resource can be a file or a directory. * * @author Fabien Potencier <fabien@symfony.com> */ class FileResource implements ResourceInterface, \Serializable { private $resource; /** * Constructor. * * @param string $resource The file path to the resource */ public function __construct($resource) { $this->resource = realpath($resource); } /** * Returns a string representation of the Resource. * * @return string A string representation of the Resource */ public function __toString() { return (string) $this->resource; } /** * Returns the resource tied to this Resource. * * @return mixed The resource */ public function getResource() { return $this->resource; } /** * Returns true if the resource has not been updated since the given timestamp. * * @param integer $timestamp The last time the resource was loaded * * @return Boolean true if the resource has not been updated, false otherwise */ public function isFresh($timestamp) { if (!file_exists($this->resource)) { return false; } return filemtime($this->resource) < $timestamp; } public function serialize() { return serialize($this->resource); } public function unserialize($serialized) { $this->resource = unserialize($serialized); } }