4 * This file is part of the Symfony package.
6 * (c) Fabien Potencier <fabien@symfony.com>
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
12 namespace Symfony\Component\HttpKernel\Config;
14 use Symfony\Component\Config\Resource\SelfCheckingResourceInterface;
17 * EnvParametersResource represents resources stored in prefixed environment variables.
19 * @author Chris Wilkinson <chriswilkinson84@gmail.com>
21 class EnvParametersResource implements SelfCheckingResourceInterface, \Serializable
36 * @param string $prefix
38 public function __construct($prefix)
40 $this->prefix = $prefix;
41 $this->variables = $this->findVariables();
47 public function __toString()
49 return serialize($this->getResource());
55 public function getResource()
57 return array('prefix' => $this->prefix, 'variables' => $this->variables);
63 public function isFresh($timestamp)
65 return $this->findVariables() === $this->variables;
68 public function serialize()
70 return serialize(array('prefix' => $this->prefix, 'variables' => $this->variables));
73 public function unserialize($serialized)
75 $unserialized = unserialize($serialized);
77 $this->prefix = $unserialized['prefix'];
78 $this->variables = $unserialized['variables'];
81 private function findVariables()
85 foreach ($_SERVER as $key => $value) {
86 if (0 === strpos($key, $this->prefix)) {
87 $variables[$key] = $value;