public static function insertMessage($user_id, $chat_id, $message)
{
$conn = DbHandler::getConnection();
$query = "INSERT INTO messages (chat_id, user_id, message, insert_time) " . "VALUES (" . $conn->escapeString($chat_id) . ", " . $conn->escapeString($user_id) . ", '" . $conn->escapeString($message) . "', " . $conn->escapeString(getMicrotime()) . ")";
$conn->exec($query);
UserHandler::setUserActivity();
return true;
}
