Custom Field Group Key

It is possible to set a custom field group key for any field group. In order to change the key, you’ll have to display the “Slug” metabox. The field group key must begin with group_.

Note that PHP & Json export files will get updated accordingly.

Retrieve Group Key

Group key is saved in the Field Group array, under key key. It can be retrieved using acf_get_field_group(). Usage example:

$field_group = acf_get_field_group('group_5f20935b9a777');

/*
 * [instruction_placement] => label
 * [hide_on_screen] =>
 * ...
 * [key] => group_my_field_group
 * ...
 */