name : ResponseFactoryInterface.php <?php namespace Psr\Http\Message; interface ResponseFactoryInterface { /** * Create a new response. * * @param int $code HTTP status code; defaults to 200 * @param string $reasonPhrase Reason phrase to associate with status code * in generated response; if none is provided implementations MAY use * the defaults as suggested in the HTTP specification. * * @return ResponseInterface */ public function createResponse(int $code = 200, string $reasonPhrase = ''): ResponseInterface; }