创建初始(第一个)订单后,我想更改活动订阅的下一个支付日期.

当前代码不起作用.为什么？我想念什么？

//fires when new order payment is complete (NOT RENEWAL but original order!)
add_action('woocommerce_payment_complete', 'fm_upate_next_payment_datetime');

function fm_upate_next_payment_datetime ( $order_id ) {

if (WC_Subscriptions_Order::order_contains_subscription( $order_id ) == false) return;      
$subscription_key = WC_Subscriptions_Manager::get_subscription_key( $order_id, $product_id
= '');

 //hard code next payment date...(must be in future)
$next_payment = date( 'Y-m-d H:i:s', '2016-05-20 00:10:10' );

//set the new payment date  
WC_Subscriptions_Manager::set_next_payment_date( $subscription_key, $user_id = '', $next_payment );

}

解决方法:

您说了什么,我们还需要设定开始日期！ (现在可以),但如果未通过,则会引发错误.
使它像这样工作：

function saveNewDate($post_id) {

    $subscription = wcs_get_subscription( $post_id );
    $dates        = array();

    $datetime           = current_time( 'timestamp', true );
    $dates[ 'start' ] = date( 'Y-m-d H:i:s', $datetime );
    $datetime = strtotime( "08/23/2016 23:30" );
    $dates['next_payment'] = date( 'Y-m-d H:i:s', $datetime );

    try {
        $subscription->update_dates( $dates, 'gmt' );
        wp_cache_delete( $post_id, 'posts' );
    } catch ( Exception $e ) {
        wcs_add_admin_notice( $e->getMessage(), 'error' );
    }
}