apply_filters( “nab_{$experiment_type}_backup_control”, array $backup , array $control , int $experiment_id , string $alternative_id )
Fires when an experiment is stopped and a backup of the control version has to be generated.
Parameters
- $backup array
(Required) the backup object.
- $control array
(Required) original version.
- $experiment_id int
(Required) id of the experiment.
- $alternative_id string
(Required) id of the current alternative.