do_action( “nab_{$experiment_type}_preview_alternative”, array $alternative , array $control , int $experiment_id , string $alternative_id )
Fires when a certain alternative is about to be previewed.
Parameters
- $alternative array
(Required) attributes of the active alternative.
- $control array
(Required) attributes of the control version.
- $experiment_id int
(Required) experiment ID.
- $alternative_id string
(Required) alternative ID.