From d89294ebdc738e6aff25a288eb6ea6ad3bab408d Mon Sep 17 00:00:00 2001
From: Milad Rahimi <info@miladrahimi.com>
Date: Sun, 26 Aug 2018 14:58:43 +0430
Subject: [PATCH] fix null response

---
 composer.json                                    | 1 +
 src/MiladRahimi/PhpRouter/Services/Publisher.php | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/composer.json b/composer.json
index a05d0bc..79ea7af 100644
--- a/composer.json
+++ b/composer.json
@@ -19,6 +19,7 @@
     },
     "require": {
         "php": ">=7.0",
+        "ext-json": "*",
         "zendframework/zend-diactoros": "^1.7"
     },
     "require-dev": {
diff --git a/src/MiladRahimi/PhpRouter/Services/Publisher.php b/src/MiladRahimi/PhpRouter/Services/Publisher.php
index 0e8ff6b..2d0f67a 100644
--- a/src/MiladRahimi/PhpRouter/Services/Publisher.php
+++ b/src/MiladRahimi/PhpRouter/Services/Publisher.php
@@ -36,6 +36,8 @@ public function __construct()
      */
     public function publish($content)
     {
+        $content = empty($content) ? '' : $content;
+
         $output = fopen($this->stream, 'r+');
 
         if ($content instanceof ResponseInterface) {