diff --git a/src/GoogleAnalytics/PersistManager.php b/src/GoogleAnalytics/PersistManager.php
new file mode 100644
index 0000000..65e81b7
--- /dev/null
+++ b/src/GoogleAnalytics/PersistManager.php
@@ -0,0 +1,98 @@
+<?php
+/**
+ * User: sj
+ * Date: 2014/7/5
+ * Time: 00:25
+ */
+namespace UnitedPrototype\GoogleAnalytics;
+
+use DateTime;
+
+/**
+ * Class PersistManager
+ * Use PHP $_SESSION to store php-ga session and visitor object
+ *
+ * @package UnitedPrototype\GoogleAnalytics
+ */
+class PersistManager
+{
+    /**
+     * @var null|Visitor
+     */
+    private $_visitor = null;
+    /**
+     * @var null|Session
+     */
+    private $_session = null;
+
+    /**
+     * Constructor
+     */
+    public function __construct ()
+    {
+        ini_set('session.cookie_lifetime', 0);
+        ini_set('session.gc_maxlifetime', 0);
+        @session_start();
+    }
+
+    /**
+     * Make a tracker instance
+     *
+     * @param $trackID
+     * @param $domain
+     * @return Tracker
+     */
+    public function makeTracker ($trackID, $domain)
+    {
+        return new Tracker($trackID, $domain);
+    }
+
+    /**
+     * Get singleton session (persist)
+     *
+     * @return mixed|Session
+     */
+    public function getSession ()
+    {
+        global $_SESSION;
+        $this->_session = null;
+        if (isset($_SESSION['GA_session'])) {
+            $this->_session = unserialize($_SESSION['GA_session']);
+        }
+        if ($this->_session === null || get_class($this->_session) !== 'UnitedPrototype\GoogleAnalytics\Session') {
+            $this->_session = new Session();
+        }
+        return $this->_session;
+    }
+
+    /**
+     * Get singleton visitor (persist)
+     *
+     * @return mixed|Visitor
+     */
+    public function getVisitor ()
+    {
+        global $_SESSION;
+        $this->_visitor = null;
+        if (isset($_SESSION['GA_visitor'])) {
+            $this->_visitor = unserialize($_SESSION['GA_visitor']);
+        }
+        if ($this->_visitor === null && get_class($this->_visitor) !== 'UnitedPrototype\GoogleAnalytics\Visitor') {
+            $this->_visitor = new Visitor();
+            $this->_visitor->fromServerVar($_SERVER);
+        }
+        $this->_visitor->setPreviousVisitTime($this->_visitor->getCurrentVisitTime());
+        $this->_visitor->setCurrentVisitTime(new DateTime());
+        return $this->_visitor;
+    }
+
+    /**
+     * Store php-ga session and visitor in $_SESSION
+     */
+    public function store ()
+    {
+        global $_SESSION;
+        $_SESSION['GA_visitor'] = serialize($this->getVisitor());
+        $_SESSION['GA_session'] = serialize($this->getSession());
+    }
+}
\ No newline at end of file
diff --git a/src/autoload.php b/src/autoload.php
index 3c57790..a822eed 100644
--- a/src/autoload.php
+++ b/src/autoload.php
@@ -14,5 +14,3 @@
 		require(__DIR__ . $classPath);
 	}
 });
-
-?>