Re-susbscribes an unsubscribed contact to the selected list when their profile is updated

wpf-ac-resubscribe-to-list.php

<?php

// This runs whenever WP Fusion updates an existing contact record. It re-subscribes them to the list ID specified.

function re_subscribe_to_list( $args ) {

	$list_id = 1; // Update this with your list ID.

	$args[1][ 'p[' . $list_id . ']' ]      = $list_id;
	$args[1][ 'status[' . $list_id . ']' ] = 1;

	return $args;

}

add_filter( 'wpf_api_update_contact_args', 're_subscribe_to_list' );