Commit 5d1d11a5 authored by Erick Hitter's avatar Erick Hitter

Resolve undefined index notice

parent 9b0ebc72
......@@ -159,7 +159,7 @@ function wp_redis_cache_set_device_key( $key ) {
* @return string
*/
function wp_redis_cache_get_device_type() {
$ua = $_SERVER['HTTP_USER_AGENT'];
$ua = isset( $_SERVER['HTTP_USER_AGENT'] ) ? $_SERVER['HTTP_USER_AGENT'] : '';
if ( empty( $ua ) ) {
return 'desktop';
......
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