nexcess / magento-turpentine

     * @param mixed $default Default value to use if key not found

     * @return mixed Returns null if key does not exist

     */

    public function getPost($key = null, $default = null) {

        if (null === $key) {

            return $this->POST;

        }

        return (isset($this->POST[$key])) ? $this->POST[$key] : $default;

    }

    /**

     * Retrieve a member of the $_SERVER superglobal

     * @param mixed $default Default value to use if key not found

     * @return mixed Returns null if key does not exist

     */

    public function getServer($key = null, $default = null) {

        if (null === $key) {

            return $this->SERVER;

        }

        return (isset($this->SERVER[$key])) ? $this->SERVER[$key] : $default;

    }

    /**

     * Retrieve a member of the $_ENV superglobal

     * @param mixed $default Default value to use if key not found

     * @return mixed Returns null if key does not exist

     */

    public function getEnv($key = null, $default = null) {

        if (null === $key) {

            return $this->ENV;

        }

        return (isset($this->ENV[$key])) ? $this->ENV[$key] : $default;

    }

    /**

     * Return the value of the given HTTP header. Pass the header name as the