Adds the 'import membership enddate' field to the Members List page of Paid Memberships Pro and the CSV file generated by it.

pmpro_import_membership_enddate_customization.php

<?php
  // To use this code, add it to a PMPro Customizations Plugin
  // https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
  

  //
  // To add 'Import Membership Enddate' to Members List
  //
  
  //Add 'Import Membership Enddate' Column to Members List Header
  function my_pmpro_memberslist_extra_cols_header($theusers)
  {
      ?>
      <th><?php _e('Import Membership Enddate', 'pmpro');?></th>
      <?php
  }
  add_action('pmpro_memberslist_extra_cols_header', 'my_pmpro_memberslist_extra_cols_header');
  //Add 'Import Membership Enddate' Column to Members List Rows
  function my_pmpro_memberslist_extra_cols_body($theuser)
  {
  ?>
  <td>
      <?php 
          if(!empty($theuser->data->ID)){
            echo(get_user_meta($theuser->ID, 'import_membership_enddate', true));
          }
      ?>
  </td>
  <?php
  }
  add_action('pmpro_memberslist_extra_cols_body', 'my_pmpro_memberslist_extra_cols_body');
  
  
  
  //
  // To add 'Import Membership Enddate' to CSV Export
  //
  
  //add the column to the export
  function my_pmpro_members_list_csv_extra_columns ( $columns ) {
      $columns["import_membership_enddate"] = "my_pmpro_import_membership_enddate_to_csv";
      return $columns;
  }
  add_filter( 'pmpro_members_list_csv_extra_columns', 'my_pmpro_members_list_csv_extra_columns', 10 );
  //call back to get the column a value
  function my_pmpro_import_membership_enddate_to_csv( $user ) {
      //this is an example to retrive user meta
      return get_user_meta($user->ID, 'import_membership_enddate', true);
  }
?>