--- /dev/null
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @see http://github.com/zendframework/zend-diactoros for the canonical source repository
+ * @copyright Copyright (c) 2015-2016 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license https://github.com/zendframework/zend-diactoros/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Diactoros\Response;
+
+use Psr\Http\Message\ResponseInterface;
+
+interface EmitterInterface
+{
+ /**
+ * Emit a response.
+ *
+ * Emits a response, including status line, headers, and the message body,
+ * according to the environment.
+ *
+ * Implementations of this method may be written in such a way as to have
+ * side effects, such as usage of header() or pushing output to the
+ * output buffer.
+ *
+ * Implementations MAY raise exceptions if they are unable to emit the
+ * response; e.g., if headers have already been sent.
+ *
+ * @param ResponseInterface $response
+ */
+ public function emit(ResponseInterface $response);
+}