WP_MS_Sites_List_Table::column_users( array $blog )

	public function column_users( $blog ) {
		$user_count = wp_cache_get( $blog['blog_id'] . '_user_count', 'blog-details' );
		if ( ! $user_count ) {
			$blog_users = get_users( array( 'blog_id' => $blog['blog_id'], 'fields' => 'ID' ) );
			$user_count = count( $blog_users );
			unset( $blog_users );
			wp_cache_set( $blog['blog_id'] . '_user_count', $user_count, 'blog-details', 12 * HOUR_IN_SECONDS );
		}

		printf(
			'<a href="%s">%s</a>',
			esc_url( network_admin_url( 'site-users.php?id=' . $blog['blog_id'] ) ),
			number_format_i18n( $user_count )
		);
	}