close comments also on old pages and attachments

close-old-comments.php

@@ -27,4 +27,17 @@ function override_close_comments_days_old($value, $option){
 }
 add_filter('option_close_comments_days_old', 'override_close_comments_days_old', 10, 2);
 
+# Filter on 'close_comments_for_post_types'
+# which post_types do we need to close automatically after X days?
+# Wordpress defaults to 'posts' (but let's check if got removed and add it back)
+add_filter('close_comments_for_post_types', function ($post_types){
+    if (! in_post_types('post'), $post_types ){
+        $post_types[] = 'post';
+    }
+    $post_types[] = 'page';
+    $post_types[] = 'attachment';
+    
+    return $post_types;
+});
+
 ?>