Reply To: Getting the values from a custom field

• John Huebner

• March 17, 2019 at 1:22 am

A relationship field holds an array of post IDs. In order to add a value you need to first get the existing value and add to it. Example:

$value = get_field('field_5628165af3668', $post_id);
$value[] = '777';
update_field('field_5628165af3668', $value, $post_id);