+ /**
+ * Generates a random string in the UUID format
+ *
+ * @param bool|string $prefix A given prefix (default is empty)
+ * @return string a generated UUID
+ */
+ public static function createUUID($prefix = '')
+ {
+ $guid = System::createGUID(32, $prefix);
+ return substr($guid, 0, 8). '-' . substr($guid, 8, 4) . '-' . substr($guid, 12, 4) . '-' . substr($guid, 16, 4) . '-' . substr($guid, 20, 12);
+ }
+