public static function resume_conversation($in_id = null) { if (!JxBotConverse::bot_available()) { return $in_id; } if ($in_id === null) { if (isset($_COOKIE['jxbot-client'])) { $in_id = $_COOKIE['jxbot-client']; } } $out_id = JxBotConverse::resume_conversation($in_id); if ($in_id === null || $in_id != $out_id) { setcookie('jxbot-client', $out_id, 0); } return $out_id; }