Add microsoft timezone map

Author: Ren Xie Liu

lib/TimeZoneUtil.php

@@ -16,6 +16,10 @@ class TimeZoneUtil
 {
     public static $map = null;
 
+    public static $microsoftMap = [
+        'tzone://Microsoft/Utc' => 'UTC',
+    ];
+
     /**
      * List of microsoft exchange timezone ids.
      *
@@ -244,7 +248,8 @@ public static function loadTzMaps()
             include __DIR__.'/timezonedata/lotuszones.php',
             include __DIR__.'/timezonedata/exchangezones.php',
             include __DIR__.'/timezonedata/php-workaround.php',
-            include __DIR__.'/timezonedata/extrazones.php'
+            include __DIR__.'/timezonedata/extrazones.php',
+            self::$microsoftMap
         );
     }
 

tests/VObject/TimeZoneUtilTest.php

@@ -354,4 +354,11 @@ public function testPrefixedOffsetExchangeIdentifier()
         $ex = new \DateTimeZone('America/New_York');
         $this->assertEquals($ex->getName(), $tz->getName());
     }
+
+    public function testMicrosoftMap()
+    {
+        $tz = TimeZoneUtil::getTimeZone('tzone://Microsoft/Utc', null, true);
+        $ex = new \DateTimeZone('UTC');
+        $this->assertEquals($ex->getName(), $tz->getName());
+    }
 }