Php 仅统计包含文章摘录的文章

我使用以下代码来计算Woocommerce中用户的订单。我怎样才能只计算包含文章摘录的文章

    $customer_orders = get_posts( array(
            'numberposts' => -1,
            'meta_key'    => '_customer_user',
            'meta_value'  => $customer_id,
            'post_type'   => 'shop_order', // WC orders post type
            'post_status' => 'wc-completed' // Only orders with status "completed"
    ) );

$customer_orders_count = count($customer_orders);

---

我试过这个：

$customer_orders_count = 0;
foreach($customer_orders as $order){
  if( $order->has_excerpt() ){
    $customer_orders_count++;
  }
}

if($customer_orders_count == 3){
  $coupon   = "sub50";
}

---

我认为正确的语法是

if（has_extract（$order））{statement；}

@BRBonn，明白了！谢谢你想把它作为答案，我会把它标记为正确的吗？我认为正确的语法是

if（has_extract（$order））{statement；}

@BRBonn，明白了！谢谢你想把它作为答案，我会把它标记为正确的吗？

$customer_orders_count = 0;
foreach($customer_orders as $order){
  if( has_excerpt($order) ){
    $customer_orders_count++;
  }
}

if($customer_orders_count == 3){
  $coupon   = "sub50";
}