fixed issue: Undefined index: plusminus sabre-io#467

sabre-io#467
phil-davis · Nov 9, 2023 · 1337f89 · 1337f89
1 parent 1afdbb5
commit 1337f89
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/DateTimeParser.php b/lib/DateTimeParser.php
@@ -104,7 +104,7 @@ public static function parseDuration($duration, $asString = false)
         if (!$asString) {
             $invert = false;
 
-            if ('-' === $matches['plusminus']) {
+            if (isset($matches['plusminus']) && '-' === $matches['plusminus']) {
                 $invert = true;
             }