How To Append To The WooCommerce Order ID In WordPress

When running an online store using WooCommerce, managing order numbers efficiently is crucial. By default, WooCommerce assigns sequential order numbers to each transaction. However, there might be scenarios where you need to customize or append additional information to these order numbers. Whether you want to include a prefix, suffix, or any other unique identifier, this guide will walk you through the process.

Why Customize Order Numbers?

  1. Branding: Custom order numbers can reinforce your brand identity. Adding a prefix related to your business or product category can make your orders more recognizable.
  2. Organization: If you have multiple stores or sell different types of products, custom order numbers help organize your records. For instance, you can use specific prefixes for different product lines.
  3. Compliance: Some legal requirements or accounting practices may necessitate specific order numbering formats. Customization allows you to meet these standards.
  4. Uniqueness – When we started our store, we went through a couple WordPress installations, and WooCommerce started back at order #1 each time. We had a vendor (ShipStation) who needed unique order IDs so we built this plugin.

How to Create Custom Order Numbers in WooCommerce

Using Our Plugin (The Easy Way)

  1. Install the Plugin:
  2. Configure Settings:
    After Activation, go to WooCommerce -> Settings, then you’ll see a link for it.
  3. Apply Custom Order Numbers:
    • The plugin will generate order numbers based on your settings.

Manually (Advanced Users)

  1. Modify Functions.php:
    • Access your theme’s functions.php file.
    • Add custom code to alter the order number generation process.
    • Use hooks and filters provided by WooCommerce to manipulate order numbers.
  2. PHP Snippet Example:
    // Append a prefix to order numbers
    function custom_order_number($order_id)
    { $prefix = 'MYSTORE-'; return $prefix . $order_id; }
    add_filter('woocommerce_order_number', 'custom_order_number');
  3. Test and Monitor:
    • Test the changes thoroughly to ensure they work as expected.
    • Monitor order numbers to verify that the customization is consistent.

Remember that customizing order numbers should align with your business needs and comply with legal requirements. Choose an approach that suits your store’s unique context.

Feel free to explore additional plugins or advanced techniques based on your specific requirements. Custom order numbers can enhance your WooCommerce store’s functionality and improve the overall shopping experience for your customers.

Happy selling! 🛒🔍📦


  1. Custom Order Number Documentation – WooCommerce
  2. How Do I Add an Order Number in WooCommerce?
  3. How Do I Change the Starting Order Number in WooCommerce?

Disclaimer: This article provides general guidance, and it’s essential to adapt the instructions to your specific WooCommerce setup. Always back up your data before making significant changes to your store. 🚀🔐

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