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<?php
declare(strict_types=1);
namespace SlayerBirden\DataFlow\Pipe;
use SlayerBirden\DataFlow\DataBagInterface;
use SlayerBirden\DataFlow\IdentificationTrait;
use SlayerBirden\DataFlow\PipeInterface;
class Swap implements PipeInterface
{
use IdentificationTrait;
/**
* @var string
*/
private $id;
private $first;
private $second;
public function __construct(string $id, string $first, string $second)
$this->id = $id;
$this->first = $first;
$this->second = $second;
}
* Swap one key with another.
*
* @param DataBagInterface $dataBag
* @return DataBagInterface
public function pass(DataBagInterface $dataBag): DataBagInterface
$first = $dataBag[$this->first] ?? null;
$second = $dataBag[$this->second] ?? null;
$dataBag[$this->first] = $second;
$dataBag[$this->second] = $first;
return $dataBag;
SlayerBirden /
dataflow
