WooCommerce Subscriptions - Check if a product is a subscription product

问题

I'd like to know how to determine if a given WC_Product object $product is a subscription product or not.

回答1:

You can use their helper function which is probably the most complete:

if( class_exists( 'WC_Subscriptions_Product' ) && WC_Subscriptions_Product::is_subscription( $product ) ) {
    return TRUE;
} else {
    return FALSE;
}

Or you could also use WooCommerce's $product->is_type( $type ) check.

来源：https://stackoverflow.com/questions/41979866/woocommerce-subscriptions-check-if-a-product-is-a-subscription-product