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

pmpro-member-number-csv.php

<?php   // do not copy this line.
/**
 * This recipe Shows member number in Members List and Members List  CSV export
 * Requires PMPro Member Number Gist:
 * https://github.com/strangerstudios/pmpro-snippets-library/blob/dev/frontend-pages/generate-unique-membership-number.php
 * 
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * 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");