From 09f98a5cbb1a0bf26b92001466daa6b859223b2c Mon Sep 17 00:00:00 2001
From: Toby Zerner <toby.zerner@gmail.com>
Date: Thu, 5 Oct 2017 12:25:30 +1030
Subject: [PATCH] Use a constant instead of a property

---
 .../core/src/Http/Middleware/AuthenticateWithHeader.php  | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/framework/core/src/Http/Middleware/AuthenticateWithHeader.php b/framework/core/src/Http/Middleware/AuthenticateWithHeader.php
index 9b34b11dc..1bf1fd51b 100644
--- a/framework/core/src/Http/Middleware/AuthenticateWithHeader.php
+++ b/framework/core/src/Http/Middleware/AuthenticateWithHeader.php
@@ -20,10 +20,7 @@ use Zend\Stratigility\MiddlewareInterface;
 
 class AuthenticateWithHeader implements MiddlewareInterface
 {
-    /**
-     * @var string
-     */
-    protected $prefix = 'Token ';
+    const TOKEN_PREFIX = 'Token ';
 
     /**
      * {@inheritdoc}
@@ -34,8 +31,8 @@ class AuthenticateWithHeader implements MiddlewareInterface
 
         $parts = explode(';', $headerLine);
 
-        if (isset($parts[0]) && starts_with($parts[0], $this->prefix)) {
-            $id = substr($parts[0], strlen($this->prefix));
+        if (isset($parts[0]) && starts_with($parts[0], self::TOKEN_PREFIX)) {
+            $id = substr($parts[0], strlen(self::TOKEN_PREFIX));
 
             if (isset($parts[1])) {
                 if (ApiKey::find($id)) {