Class that implements MemCache support, MemCache is a prerequisite

src/OAuth2/Storage/MemCacheToken.php

@@ -0,0 +1,51 @@
+<?php
+namespace OAuth2\Storage;
+
+use Memcache;
+
+class MemCacheToken implements AccessTokenInterface
+{
+    protected $storage;
+    protected $memcache;
+
+    public function __construct(AccessTokenInterface $storage)
+    {
+        $this->storage = $storage;
+
+        $this->memcache = new Memcache;
+        $this->memcache->connect('localhost', 11211);
+    }
+
+    public function getAccessToken($access_token)
+    {
+        $cacheKey = 'storage-'.$access_token;           
+
+        # Try and get from memory
+        $accessToken = $this->memcache->get($cacheKey);
+
+        # We have some data
+        if(!empty($accessToken)) {
+            return $accessToken;
+        }
+
+        $accessToken = $this->storage->getAccessToken('access_token');
+        $this->memcache->set($cacheKey, $accessToken, 0, strtotime($accessToken['expires']));
+
+        return $accessToken;
+    }
+
+    public function setAccessToken($oauth_token, $client_id, $user_id, $expires, $scope = null)
+    {
+        $cacheKey = 'storage-'.$oauth_token;           
+
+        $this->storage->setAccessToken($oauth_token, $client_id, $user_id, $expires, $scope);
+        $updatedAccessToken = $this->storage->getAccessToken($oauth_token);
+
+        $result = $this->memcache->replace($cacheKey, $updatedAccessToken, 0, $expires);
+        if( $result == false ) 
+        { 
+            $result = $this->memcache->set($cacheKey, $updatedAccessToken, 0, $expires);
+        }
+
+    }
+}