[BUGFIX] Check if core exists in registry array (#1234)

kitodo · May 31, 2024 · bd70a64 · bd70a64
1 parent e6651d2
commit bd70a64
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/Classes/Common/Solr/Solr.php b/Classes/Common/Solr/Solr.php
@@ -301,7 +301,7 @@ public static function getInstance($core = null): Solr
  if (!empty($core)) {
  // Check if there is an instance in the registry already.
  if (
- is_object(self::$registry[$core])
+ array_key_exists($core, self::$registry)
  && self::$registry[$core] instanceof self
  ) {
  // Return singleton instance if available.