Approval.

it/timing_intervals_set.php

@@ -1,4 +1,10 @@
 <?PHP
-$timing_intervals_set['weekly'] = 'Weekly';
-$timing_intervals_set['monthly'] = 'Monthly';
-$timing_intervals_set['annual'] = 'Annual';
+declare(strict_types = 1);
+array (
+  'timing_intervals_set' => 
+  array (
+    'weekly' => 'Weekly',
+    'monthly' => 'Monthly',
+    'annual' => 'Annual',
+  ),
+)