search_sqlquery.php

<?php
function replace_pmpro_directory_search($sqlQuery, $levels, $s, $pn, $limit, $start, $end, $order_by, $order) {
    global $wpdb;
  if($s)
	{
		$sqlQuery = "SELECT SQL_CALC_FOUND_ROWS u.ID, u.user_login, u.user_email, u.user_nicename, u.display_name, UNIX_TIMESTAMP(u.user_registered) as joindate, mu.membership_id, mu.initial_payment, mu.billing_amount, mu.cycle_period, mu.cycle_number, mu.billing_limit, mu.trial_amount, mu.trial_limit, UNIX_TIMESTAMP(mu.startdate) as startdate, UNIX_TIMESTAMP(mu.enddate) as enddate, m.name as membership, umf.meta_value as first_name, uml.meta_value as last_name FROM $wpdb->users u LEFT JOIN $wpdb->usermeta umh ON umh.meta_key = 'pmpromd_hide_directory' AND u.ID = umh.user_id LEFT JOIN $wpdb->usermeta umf ON umf.meta_key = 'first_name' AND u.ID = umf.user_id LEFT JOIN $wpdb->usermeta uml ON uml.meta_key = 'last_name' AND u.ID = uml.user_id LEFT JOIN $wpdb->usermeta um ON u.ID = um.user_id LEFT JOIN $wpdb->pmpro_memberships_users mu ON u.ID = mu.user_id LEFT JOIN $wpdb->pmpro_membership_levels m ON mu.membership_id = m.id WHERE mu.status = 'active' AND (umh.meta_value IS NULL OR umh.meta_value <> '1') AND mu.membership_id > 0 AND ";
		$sqlQuery .= "(u.user_login LIKE '%" . esc_sql($s) . "%' OR u.user_email LIKE '%" . esc_sql($s) . "%' OR u.display_name LIKE '%" . esc_sql($s) . "%') ";
		if($levels)
			$sqlQuery .= " AND mu.membership_id IN(" . esc_sql($levels) . ") ";
		$sqlQuery .= "GROUP BY u.ID ORDER BY ". esc_sql($order_by) . " " . $order;
	}
	else
	{
		$sqlQuery = "SELECT SQL_CALC_FOUND_ROWS u.ID, u.user_login, u.user_email, u.user_nicename, u.display_name, UNIX_TIMESTAMP(u.user_registered) as joindate, mu.membership_id, mu.initial_payment, mu.billing_amount, mu.cycle_period, mu.cycle_number, mu.billing_limit, mu.trial_amount, mu.trial_limit, UNIX_TIMESTAMP(mu.startdate) as startdate, UNIX_TIMESTAMP(mu.enddate) as enddate, m.name as membership, umf.meta_value as first_name, uml.meta_value as last_name FROM $wpdb->users u LEFT JOIN $wpdb->usermeta umh ON umh.meta_key = 'pmpromd_hide_directory' AND u.ID = umh.user_id LEFT JOIN $wpdb->usermeta umf ON umf.meta_key = 'first_name' AND u.ID = umf.user_id LEFT JOIN $wpdb->usermeta uml ON uml.meta_key = 'last_name' AND u.ID = uml.user_id LEFT JOIN $wpdb->pmpro_memberships_users mu ON u.ID = mu.user_id LEFT JOIN $wpdb->pmpro_membership_levels m ON mu.membership_id = m.id";
		$sqlQuery .= " WHERE mu.status = 'active' AND (umh.meta_value IS NULL OR umh.meta_value <> '1') AND mu.membership_id > 0 ";
		if($levels)
			$sqlQuery .= " AND mu.membership_id IN(" . esc_sql($levels) . ") ";
		$sqlQuery .= "ORDER BY ". esc_sql($order_by) . " " . esc_sql($order);
	}
	$sqlQuery .= " LIMIT $start, $limit";
  return $sqlQuery;
}
add_filter( 'pmpro_member_directory_sql', 'replace_pmpro_directory_search', 10, 9 );