<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2020 Justin Hileman
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Psy;
/**
* Environment variables implementation via $_SERVER superglobal.
*/
class SuperglobalsEnv implements EnvInterface
{
/**
* Get an environment variable by name.
*
* @return string|null
*/
public function get($key)
{
if (isset($_SERVER[$key]) && $_SERVER[$key]) {
return $_SERVER[$key];
}
return null;
}
}