two factor authentication essental elements

vendor/robthree/twofactorauth/lib/Providers/Time/ConvertUnixTimeDotComTimeProvider.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace RobThree\Auth\Providers\Time;
+
+class ConvertUnixTimeDotComTimeProvider implements ITimeProvider
+{
+    public function getTime() {
+        $json = @json_decode(
+            @file_get_contents('http://www.convert-unix-time.com/api?timestamp=now')
+        );
+        if ($json === null || !is_int($json->timestamp))
+            throw new \TimeException('Unable to retrieve time from convert-unix-time.com');
+        return $json->timestamp;
+    }
+}