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WooCommerce: Get List of Users Who Purchased a Product ID

by Tutor Aspire

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!

Here’s the array containing the list of customer billing emails who have purchased a given WooCommerce product

PHP Snippet: Get List of WooCommerce Customer Emails Who Purchased a Specific Product

Usage: simply call the tutoraspire_echo_product_customers( $product_id ) function somewhere in your code, and you will get the list of customers who bought a specific product!

/**
 * @snippet       Get Customers Who Purchased Product ID
 * @how-to        Get tutoraspire.com FREE
 * @author        Tutor Aspire
 * @compatible    WooCommerce 6
 * @donate $9     https://tutoraspire.com
 */

function tutoraspire_echo_product_customers( $product_id ) {
   global $wpdb;
   $statuses = array_map( 'esc_sql', wc_get_is_paid_statuses() );
   $customer_emails = $wpdb->get_col( "
   SELECT DISTINCT pm.meta_value FROM {$wpdb->posts} AS p
   INNER JOIN {$wpdb->postmeta} AS pm ON p.ID = pm.post_id
   INNER JOIN {$wpdb->prefix}woocommerce_order_items AS i ON p.ID = i.order_id
   INNER JOIN {$wpdb->prefix}woocommerce_order_itemmeta AS im ON i.order_item_id = im.order_item_id
   WHERE p.post_status IN ( 'wc-" . implode( "','wc-", $statuses ) . "' )
   AND pm.meta_key IN ( '_billing_email' )
   AND im.meta_key IN ( '_product_id', '_variation_id' )
   AND im.meta_value = $product_id
   " );
   if ( $customer_emails ) echo implode( ', ', $customer_emails );
}

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