From 1fee981c9c838deca1a16887cbe6219c99f1f3d6 Mon Sep 17 00:00:00 2001
From: Douglas <machadoug@users.noreply.github.com>
Date: Wed, 28 Dec 2016 19:18:32 -0200
Subject: [PATCH] Update OpenGraph.php

Check to see if $this->_values['type'] is set and avoid PHP Notices.
---
 OpenGraph.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/OpenGraph.php b/OpenGraph.php
index af2e7b6..24b04a3 100644
--- a/OpenGraph.php
+++ b/OpenGraph.php
@@ -157,7 +157,7 @@ public function __get($key) {
 		}
 		
 		if ($key === 'schema') {
-			foreach (self::$TYPES AS $schema => $types) {
+			foreach (!empty($this->_values['type']) && self::$TYPES AS $schema => $types) {
 				if (array_search($this->_values['type'], $types)) {
 					return $schema;
 				}