woocommerce_tracker_last_send_interval │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_tracker_last_send_interval', 'wp_kama_woocommerce_tracker_last_send_interval_filter' );

/**
 * Function for `woocommerce_tracker_last_send_interval` filter-hook.
 * 
 * @param  $strtotime 
 *
 * @return 
 */
function wp_kama_woocommerce_tracker_last_send_interval_filter( $strtotime ){

	// filter...
	return $strtotime;
}

$strtotime

-

Where the hook is called

if ( $last_send && $last_send > apply_filters( 'woocommerce_tracker_last_send_interval', strtotime( '-1 week' ) ) ) { // phpcs:ignore

Where the hook is used in WooCommerce