Reply To: unset a field

• John Huebner

• August 29, 2015 at 2:27 am

http://www.advancedcustomfields.com/resources/acfsave_post/

add_action('acf/save_post', 'my_acf_save_post', 20);
function my_acf_save_post($post_id) {
  $value get_post_meta($post_id, 'first_field_name', true);
  if ($value) {
    // delete the second value
    delete_post_meta($post_id, 'second_field_name');
    // delete the acf field key
    delete_post_meta($post_id, '_second_field_name');
  }
}