pmpro_order_list_csv_export_header_array

Filter to adjust the default data headings included in the orders export from the Membership > Orders > Export to CSV page in the WordPress admin.

apply_filters( 'pmpro_order_list_csv_export_header_array', $csv_file_header_array );

Parameters

$csv_file_header_array

array; names for the column headers in the CSV export file

Source

File: https://github.com/strangerstudios/paid-memberships-pro/blob/master/adminpages/orders-csv.php