Ensure key exists before checking array value

symfony · Mar 25, 2019 · f8b4ade · f8b4ade
1 parent b296860
commit f8b4ade
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php b/src/Symfony/Component/Cache/Traits/PhpFilesTrait.php
@@ -133,7 +133,7 @@ protected function doFetch(array $ids)
      */
     protected function doHave($id)
     {
-        if ($this->appendOnly && $this->values[$id]) {
+        if ($this->appendOnly && isset($this->values[$id])) {
             return true;
         }