Add the group code column to the Order CSV export

pmpro-group-discount-order-csv-export.php

<?php //Do not copy this PHP tag into your code.

/**
 * Adds an extra colum to your Memberships > Orders > Export to CSV file. Displays the group discount code used.
 *
 * Add this code below to your PMPro Customizations Plugin - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 *
 * Requires the Paid Memberships Pro Group Discount code Add On to be installed and activated in order to work:
 * https://www.paidmembershipspro.com/add-ons/group-discount-codes/
 */


//Set up the column header and callback function
function my_pmpro_orders_csv_extra_columns($columns)
{
	$columns["group_code"] = "my_extra_order_column_notes";
	return $columns;
}

//The actual call back for the column
function my_extra_order_column_notes($order)
{
	global $wpdb;
	
	$group_code = pmpro_getMatches("/{GROUPCODE:([^}]*)}/", $order->notes, true);
	
	if(!empty($group_code))
		return $group_code;
	else
		return "";
}

add_filter("pmpro_orders_csv_extra_columns", "my_pmpro_orders_csv_extra_columns");

This recipe is included in the blog post "Include the used and claimed Group Discount Codes in your Membership Orders export file" at Paid Memberships Pro here: https://www.paidmembershipspro.com/include-the-used-and-claimed-group-discount-codes-in-your-membership-orders-export-file/