Merge pull request #556 from edhelas/master

Fix the subdomain detection, substr was using a wrong offset length

Author: oscarotero

src/ExtractorFactory.php

@@ -53,7 +53,7 @@ public function createExtractor(UriInterface $uri, RequestInterface $request, Re
             }
 
             // Check if $host is a subdomain of $adapterHost.
-            if (substr($host, -strlen($adapterHost) + 1) === ".{$adapterHost}") {
+            if (substr($host, -strlen($adapterHost) - 1) === ".{$adapterHost}") {
                 $class = $adapter;
                 break;
             }