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-rw-r--r--lib/private/AppFramework/OCS/BaseResponse.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/private/AppFramework/OCS/BaseResponse.php b/lib/private/AppFramework/OCS/BaseResponse.php
index 60a4fb57ab4..68456289be5 100644
--- a/lib/private/AppFramework/OCS/BaseResponse.php
+++ b/lib/private/AppFramework/OCS/BaseResponse.php
@@ -126,7 +126,7 @@ abstract class BaseResponse extends Response {
*/
protected function toXML(array $array, \XMLWriter $writer) {
foreach ($array as $k => $v) {
- if ($k[0] === '@') {
+ if (\is_string($k) && strpos($k, '@') === 0) {
$writer->writeAttribute(substr($k, 1), $v);
continue;
}