以编程方式在woocommerce中下订单

Question

我正在使用此功能，此处定义：

http://woocommerce.wp-a2z.org/oik_api/wc_create_order/

但它给了我一个错误：

  

未捕捉错误：班级＆＃39; WC_Order＆＃39;在C：\ xampp \ htdocs \ wordpress \ wp-content \ plugins \ order.php中找不到：24

我甚至包含了wc-core-functions.php文件。

include 'woocommerce/includes/wc-core-functions.php';
function wc_create( $args = array() ) {
  $default_args = array(
    'status'        => null,
    'customer_id'   => null,
    'customer_note' => null,
    'parent'        => null,
    'created_via'   => null,
    'cart_hash'     => null,
    'order_id'      => 0,
  );

  try {
    $args  = wp_parse_args( $args, $default_args );
    $order = new WC_Order( $args['order_id'] );

    // Update props that were set (not null)
    if ( ! is_null( $args['parent'] ) ) {
      $order->set_parent_id( absint( $args['parent'] ) );
    }

    if ( ! is_null( $args['status'] ) ) {
      $order->set_status( $args['status'] );
    }

    if ( ! is_null( $args['customer_note'] ) ) {
      $order->set_customer_note( $args['customer_note'] );
    }

    if ( ! is_null( $args['customer_id'] ) ) {
      $order->set_customer_id( is_numeric( $args['customer_id'] ) ? absint( $args['customer_id'] ) : 0 );
    }

    if ( ! is_null( $args['created_via'] ) ) {
      $order->set_created_via( sanitize_text_field( $args['created_via'] ) );
    }

    if ( ! is_null( $args['cart_hash'] ) ) {
      $order->set_cart_hash( sanitize_text_field( $args['cart_hash'] ) );
    }

    // Update other order props set automatically
    $order->set_currency( get_woocommerce_currency() );
    $order->set_prices_include_tax( 'yes' === get_option( 'woocommerce_prices_include_tax' ) );
    $order->set_customer_ip_address( WC_Geolocation::get_ip_address() );
    $order->set_customer_user_agent( wc_get_user_agent() );
    $order->save();
  } catch ( Exception $e ) {
    return new WP_Error( 'error', $e->getMessage() );
  }

  return $order;
}
 wc_create();