Viewing file:  EnvParametersResource.php (2.1 KB) -rw-r--r--
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<?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\HttpKernel\Config;
use Symfony\Component\Config\Resource\SelfCheckingResourceInterface;
/**
* EnvParametersResource represents resources stored in prefixed environment variables.
*
* @author Chris Wilkinson <chriswilkinson84@gmail.com>
*/
class EnvParametersResource implements SelfCheckingResourceInterface, \Serializable
{
/**
* @var string
*/
private $prefix;
/**
* @var string
*/
private $variables;
/**
* Constructor.
*
* @param string $prefix
*/
public function __construct($prefix)
{
$this->prefix = $prefix;
$this->variables = $this->findVariables();
}
/**
* {@inheritdoc}
*/
public function __toString()
{
return serialize($this->getResource());
}
/**
* @return array An array with two keys: 'prefix' for the prefix used and 'variables' containing all the variables watched by this resource
*/
public function getResource()
{
return array('prefix' => $this->prefix, 'variables' => $this->variables);
}
/**
* {@inheritdoc}
*/
public function isFresh($timestamp)
{
return $this->findVariables() === $this->variables;
}
public function serialize()
{
return serialize(array('prefix' => $this->prefix, 'variables' => $this->variables));
}
public function unserialize($serialized)
{
$unserialized = unserialize($serialized);
$this->prefix = $unserialized['prefix'];
$this->variables = $unserialized['variables'];
}
private function findVariables()
{
$variables = array();
foreach ($_SERVER as $key => $value) {
if (0 === strpos($key, $this->prefix)) {
$variables[$key] = $value;
}
}
ksort($variables);
return $variables;
}
}
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