Show member number in Members List and Members List CSV export.

pmpro-member-number-csv.php

<?php
/**
  * Show member number in Members List and Members List  CSV export.
  * Useful for offering multiple pricing structures for membership (i.e. Monthly, Annually).
  * Requires the PMPro Member Unique Number Code Recipe - https://www.paidmembershipspro.com/generate-a-unique-member-number-for-display-on-membership-account-confirmation-email-and-more/
  * Add this code below to your PMPro Customizations Plugin - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
  */


function my_pmpro_members_list_csv_extra_columns($columns)
{
	$columns["member_number"] = "my_extra_column_member_number";

	return $columns;
}
add_filter("pmpro_members_list_csv_extra_columns", "my_pmpro_members_list_csv_extra_columns", 10);

function my_extra_column_member_number($user)
{
	if(!empty($user->metavalues->member_number))
	{
		return $user->metavalues->member_number;
	}
	else
	{
		return "";
	}
}

function my_pmpro_memberslist_extra_cols_header()
{?>
	<th><?php _e('Member Number', 'pmpro');?></th><?php
}

add_action("pmpro_memberslist_extra_cols_header", "my_pmpro_memberslist_extra_cols_header");

//columns
function my_pmpro_memberslist_extra_cols_body($theuser)
{?>
	<td><?php 
		if(!empty($theuser->member_number))
		{
			echo $theuser->member_number;
		}?>
	</td><?php
}
add_action("pmpro_memberslist_extra_cols_body", "my_pmpro_memberslist_extra_cols_body");

This recipe is included in the blog post on "Display a Unique Membership Number on your Member’s List, Membership Directory, and Membership Card." at Paid Memberships Pro here: https://www.paidmembershipspro.com/display-a-unique-membership-number-on-your-members-list-membership-directory-and-membership-card/