We could call this the “WooCommerce Anti-Spam Without a Plugin” series, while I attempt to fight against bad humans and very bad bots who love attacking the Business Bloomer checkout page with spam orders and fake user registrations.
My first attempts were (1) My Account registration anti-spam honeypot, (2) Checkout anti-carding-attack honeypot, and (3) Reducing the number of admin emails, but I can tell that (2) didn’t work, and I got another carding attack on a $9 product last weekend. Bots are smart.
Today, I’d like to share another anti-spam snippet that I’m currently testing on Business Bloomer. Most carding attacks, in fact, end up with the purchase of a single product in the $1-$9 range – which means that limiting the daily sales for specific, inexpensive, products may do the trick.
My code counts the times each product has been purchased during the day – and if a carding attack occurs, the product won’t be purchasable any longer until the end of the day. Because we’re talking about cheap products, it’s no problem for me to disallow legit sales as well for 24 hours. Use at your own risk, of course.
We already covered how to “Limit Sales Of A Product Per Day“, but this time I’d like to apply that to an array of products – and specifically all those that are under $10. Enjoy!
Continue reading WooCommerce: Limit Daily Sales For Cheap Products (Anti-Spam)
In the era of online courses, subscriptions, custom-made products and product personalization, it may happen a scenario where a user can only purchase a product once in their lifetime.
In this short tutorial, we will see how this is done.Clearly, the user must be logged in in order for the code to trigger, so this applies to stores that require checkout login in order to proceed with the order.
Continue reading WooCommerce: Only Allow to Buy a Product Once
This time around we’ll take a look at some SQL. As you know, WooCommerce orders (same as WooCommerce products) are stored in the WordPress database.
Instead of using complex PHP loops and conditionals, sometimes knowing a bit of database “reading” can help. I took some inspiration (because I don’t know everything by heart) from the “wc_customer_bought_product()” WooCommerce function, which contains some SQL to check if a user has purchased a given product.
I’ve played a little with the same SQL SELECT call, and managed to return the list of user email addresses who have purchased a specific product ID. If you’re ever going to need this, enjoy!
Continue reading WooCommerce: Get List of Users Who Purchased a Product ID
When a WooCommerce customer is logged in, you might want to show them the list of previously purchased products (maybe in a custom “My Account” tab).
This is helpful when customers tend to buy the same products over and over again, and therefore you can help them “order again” without having them to search the whole product catalog again.
Continue reading WooCommerce: Display All Products Purchased by User
If you need to detect if a logged in user has purchased a certain product ID, this snippet will do the trick. You can use this for marketing (e.g. “Buy More of This!”) or for displaying special notices on the loop or the single product page. Enjoy!
Continue reading WooCommerce: Check If User Has Purchased Product