ntwb / wordpress

			$this->query_where .= $wpdb->prepare( ' AND user_login = %s', $qv['login'] );

		}

		if ( ! empty( $qv['login__in'] ) ) {

			$sanitized_login__in = array_map( 'esc_sql', $qv['login__in'] );

			$login__in = implode( "','", $sanitized_login__in );

			$this->query_where .= " AND user_login IN ( '$login__in' )";

		}

		if ( ! empty( $qv['login__not_in'] ) ) {

			$sanitized_login__not_in = array_map( 'esc_sql', $qv['login__not_in'] );

			$include = wp_parse_id_list( $this->query_vars['include'] );

			$include_sql = implode( ',', $include );

			$_orderby = "FIELD( $wpdb->users.ID, $include_sql )";

		} elseif ( 'nicename__in' === $orderby ) {

			$sanitized_nicename__in = array_map( 'esc_sql', $this->query_vars['nicename__in'] );

			$nicename__in = implode( "','", $sanitized_nicename__in );

			$_orderby = "FIELD( user_nicename, '$nicename__in' )";

		} elseif ( 'login__in' === $orderby ) {

			$sanitized_login__in = array_map( 'esc_sql', $this->query_vars['login__in'] );

			$login__in = implode( "','", $sanitized_login__in );

			$_orderby = "FIELD( user_login, '$login__in' )";