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<?php
/*
* This file is part of the Predis package.
*
* (c) Daniele Alessandri <suppakilla@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Predis\Protocol\Text\Handler;
use Predis\CommunicationException;
use Predis\Connection\CompositeConnectionInterface;
use Predis\Protocol\ProtocolException;
/**
* Handler for the integer response type in the standard Redis wire protocol.
* It translates the payload an integer or NULL.
*
* @link http://redis.io/topics/protocol
*
* @author Daniele Alessandri <suppakilla@gmail.com>
*/
class IntegerResponse implements ResponseHandlerInterface
{
/**
* {@inheritdoc}
*/
public function handle(CompositeConnectionInterface $connection, $payload)
{
if (is_numeric($payload)) {
$integer = (int) $payload;
return $integer == $payload ? $integer : $payload;
}
if ($payload !== 'nil') {
CommunicationException::handle(new ProtocolException(
$connection, "Cannot parse '$payload' as a valid numeric response."
));
}
return;
}
}