frqnck / apix-cache

    /**

     * {@inheritdoc}

     */

    public function setExpiration($ttl = null)

    {

        if ($ttl instanceof \DateTime) {

            $this->expiration = $ttl;

        } elseif (is_numeric($ttl)) {

            $this->expiration = new \DateTime('now +' . $ttl . ' seconds');

        } elseif (is_null($ttl)) {

             // stored permanently or for as long as the default value.

            $this->expiration = new \DateTime(self::DEFAULT_EXPIRATION);

        } else {

            throw new InvalidArgumentException(

                'Integer or \DateTime object expected.'

            );

        }

        return $this;

    }

    /**

     * {@inheritdoc}

    /**

     * {@inheritdoc}

     */

    public function expiresAfter($time)

    {

        if ($time instanceof \DateInterval) {

            $this->expiration = new \DateTime();

            $this->expiration->add($time);

        } elseif (is_numeric($time)) {

            $this->expiration = new \DateTime('now +' . $time . ' seconds');

        } elseif (null === $time) {

            // stored permanently or for as long as the default value.

            $this->expiration = new \DateTime(self::DEFAULT_EXPIRATION);

        } else {

            throw new InvalidArgumentException(

                'Integer or \DateInterval object expected.'

            );

        }

        return $this;

    }

}