Added $checkSession parameter to User::getIsGuest() and getId().

framework/web/User.php

@@ -285,20 +285,26 @@ class User extends Component
 
     /**
      * Returns a value indicating whether the user is a guest (not authenticated).
+     * @param boolean $checkSession whether to check the session to determine if the user is a guest.
+     * Note that if this is false, it is possible that the user may not be a guest while this method still returns
+     * true. This is because the session is not checked.
      * @return boolean whether the current user is a guest.
      */
-    public function getIsGuest()
+    public function getIsGuest($checkSession = true)
     {
-        return $this->getIdentity() === null;
+        return $this->getIdentity($checkSession) === null;
     }
 
     /**
      * Returns a value that uniquely represents the user.
+     * @param boolean $checkSession whether to check the session to determine the user ID.
+     * Note that if this is false, it is possible that this method returns null although the user may not
+     * be a guest. This is because the session is not checked.
      * @return string|integer the unique identifier for the user. If null, it means the user is a guest.
      */
-    public function getId()
+    public function getId($checkSession = true)
     {
-        $identity = $this->getIdentity();
+        $identity = $this->getIdentity($checkSession);
 
         return $identity !== null ? $identity->getId() : null;
     }