/* Plugin Name: plugin name
Plugin URI:
Description: Descript
Version: 1.0
Author: Author
Author URI:
License: GPLv2 or later
*/

if ( ! defined( 'ABSPATH' ) ) {
    exit; // Exit if accessed directly
}

require_once(dirname(__FILE__) . '/lib/visit_stats.php');

// Current wordpress user id
  $userid = 3;

// Getting visit value from user meta
$oldvisitdata = get_user_meta($userid, "visits", true);

// For example if it's returning 3

// Now increasing the old visits value by 1
$newvisit = $oldvisitdata + 1;

// Now update the meta
update_user_meta($userid, 'visits', $newvisit);