Add Parent Affiliate Column to Referrals Export

affwp_referrals_export_parent_column.php

<?php

/**
 * Add new column to the exported referrals CSV file for the affiliate's Parent
 */
function affwp_mlm_export_referrals_csv_cols( $cols ) {
	$cols['parent_name'] = 'Parent Affiliate';

	return $cols;
}
add_filter( 'affwp_export_csv_cols_referrals', 'affwp_mlm_export_referrals_csv_cols' );

/**
 * Add the the affiliate's Parent to our new csv column
 */
function affwp_mlm_export_get_data_referrals( $data ) {
	foreach ( $data as $key => $d ) {
    
    $affiliate_id = $data[$key]['affiliate_id'];
    $parent_id = affwp_mlm_get_parent_affiliate( $affiliate_id );
    $parent_name = ( ! empty( $parent_id ) ) ? affiliate_wp()->affiliates->get_affiliate_name( $parent_id ) : 'None';
    
		$data[$key]['parent_name'] = $parent_name;
	}
	return $data;
}
add_filter( 'affwp_export_get_data_referrals', 'affwp_mlm_export_get_data_referrals' );