wip filter email subject and sender, in addition to message

plugins/custer/user_infos.php

@@ -45,7 +45,7 @@ function merge_arrays(...$arrays) {
 			$new_array[$key.'('.$i.')'] = $value;
 		}
 	}
-	ksort($new_array, 'strnatcasecmp');
+	uksort($new_array, 'strnatcasecmp');
 	return $new_array;
 }