PHP WC_Subscriptions_Order::get_item_meta方法代码示例

 /**
  * Set the subscription prices to be used in calculating totals by @see WC_Subscriptions_Cart::calculate_subscription_totals()
  *
  * @since 1.4
  */
 public static function maybe_set_apporitioned_totals($total)
 {
     global $woocommerce;
     if (false === self::cart_contains_subscription_switch()) {
         return $total;
     }
     // Maybe charge an initial amount to account for upgrading from a cheaper subscription
     $apportion_recurring_price = get_option(WC_Subscriptions_Admin::$option_prefix . '_apportion_recurring_price', 'no');
     $apportion_sign_up_fee = get_option(WC_Subscriptions_Admin::$option_prefix . '_apportion_sign_up_fee', 'no');
     $apportion_length = get_option(WC_Subscriptions_Admin::$option_prefix . '_apportion_length', 'no');
     foreach ($woocommerce->cart->get_cart() as $cart_item_key => $cart_item) {
         if (!isset($cart_item['subscription_switch']['subscription_key'])) {
             continue;
         }
         $old_subscription_key = $cart_item['subscription_switch']['subscription_key'];
         $item_data = $cart_item['data'];
         $product_id = empty($cart_item['variation_id']) ? $cart_item['product_id'] : $cart_item['variation_id'];
         $product = get_product($product_id);
         // Set the date on which the first payment for the new subscription should be charged
         $woocommerce->cart->cart_contents[$cart_item_key]['subscription_switch']['first_payment_timestamp'] = $cart_item['subscription_switch']['next_payment_timestamp'];
         $is_virtual_product = 'no' != $item_data->virtual ? true : false;
         // Add any extra sign up fees required to switch to the new subscription
         if ('yes' == $apportion_sign_up_fee) {
             $old_subscription = WC_Subscriptions_Manager::get_subscription($old_subscription_key);
             $old_order = new WC_Order($old_subscription['order_id']);
             // Because product add-ons etc. don't apply to sign-up fees, it's safe to use the product's sign-up fee value rather than the cart item's
             $sign_up_fee_due = $product->subscription_sign_up_fee;
             if (self::order_contains_subscription_switch($old_subscription['order_id'])) {
                 // Deduct any prorated amounts already paid
                 $sign_up_fee_paid = $old_order->get_total();
             } else {
                 // We need the product's raw sign-up fee value
                 $sign_up_fee_paid = WC_Subscriptions_Order::get_item_meta($old_order, '_subscription_sign_up_fee', $old_subscription['product_id'], 0);
             }
             $woocommerce->cart->cart_contents[$cart_item_key]['data']->subscription_sign_up_fee = max($sign_up_fee_due - $sign_up_fee_paid, 0);
         } elseif ('no' == $apportion_sign_up_fee) {
             // $0 the initial sign-up fee
             $woocommerce->cart->cart_contents[$cart_item_key]['data']->subscription_sign_up_fee = 0;
         }
         // Now lets see if we should add a prorated amount to the sign-up fee (for upgrades) or extend the next payment date (for downgrades)
         if (in_array($apportion_recurring_price, array('yes', 'yes-upgrade')) || in_array($apportion_recurring_price, array('virtual', 'virtual-upgrade')) && $is_virtual_product) {
             // Get the current subscription
             $old_subscription = isset($old_subscription) ? $old_subscription : WC_Subscriptions_Manager::get_subscription($old_subscription_key);
             // Get the current subscription's original order
             $old_order = isset($old_order) ? $old_order : new WC_Order($old_subscription['order_id']);
             // Get the current subscription's last payment date
             $last_payment_timestamp = WC_Subscriptions_Manager::get_last_payment_date($old_subscription_key, get_current_user_id(), 'timestamp');
             $days_since_last_payment = floor((gmdate('U') - $last_payment_timestamp) / (60 * 60 * 24));
             // Get the current subscription's next payment date
             $next_payment_timestamp = $cart_item['subscription_switch']['next_payment_timestamp'];
             $days_until_next_payment = ceil(($next_payment_timestamp - gmdate('U')) / (60 * 60 * 24));
             // Find the number of days between the two
             $days_in_old_cycle = $days_until_next_payment + $days_since_last_payment;
             // Find the actual recurring amount charged for the old subscription (we need to use the '_recurring_line_total' meta here rather than '_subscription_recurring_amount' because we want the recurring amount to include extra from extensions, like Product Add-ons etc.)
             $old_recurring_total = WC_Subscriptions_Order::get_item_meta($old_order, '_recurring_line_total', $old_subscription['product_id'], 0) / WC_Subscriptions_Order::get_item_meta($old_order, '_qty', $old_subscription['product_id'], 0);
             // Find the $price per day for the old subscription's recurring total
             $old_price_per_day = $old_recurring_total / $days_in_old_cycle;
             // Find the price per day for the new subscription's recurring total
             // If the subscription uses the same billing interval & cycle as the old subscription,
             if ($item_data->subscription_period == $old_subscription['period'] && $item_data->subscription_period_interval == $old_subscription['interval']) {
                 $days_in_new_cycle = $days_in_old_cycle;
                 // Use $days_in_old_cycle to make sure they're consistent
                 $new_price_per_day = $item_data->price / $days_in_old_cycle;
                 // We need to use the cart items price to ensure we include extras added by extensions like Product Add-ons
             } else {
                 // We need to figure out the price per day for the new subscription based on its billing schedule
                 switch ($item_data->subscription_period) {
                     case 'day':
                         $days_in_new_cycle = $item_data->subscription_period_interval;
                         break;
                     case 'week':
                         $days_in_new_cycle = $item_data->subscription_period_interval * 7;
                         break;
                     case 'month':
                         $days_in_new_cycle = $item_data->subscription_period_interval * 30.4375;
                         // Average days per month over 4 year period
                         break;
                     case 'year':
                         $days_in_new_cycle = $item_data->subscription_period_interval * 365.25;
                         // Average days per year over 4 year period
                         break;
                 }
                 $new_price_per_day = $item_data->price / $days_in_new_cycle;
             }
             // If the customer is upgrading, we may need to add a gap payment to the sign-up fee or to reduce the pre-paid period (or both)
             if ($old_price_per_day < $new_price_per_day) {
                 // The new subscription may be more expensive, but it's also on a shorter billing cycle, so reduce the next pre-paid term
                 if ($days_in_old_cycle > $days_in_new_cycle) {
                     // Find out how many days at the new price per day the customer would receive for the total amount already paid
                     // (e.g. if the customer paid $10 / month previously, and was switching to a $5 / week subscription, she has pre-paid 14 days at the new price)
                     $pre_paid_days = 0;
                     do {
                         $pre_paid_days++;
                         $new_total_paid = $pre_paid_days * $new_price_per_day;
                     } while ($new_total_paid < $old_recurring_total);
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