Пинг на PHP. Как привязать БД?

 <?php
 class CheckDevice {

        public function myOS(){
            if (strtoupper(substr(PHP_OS, 0, 3)) === (chr(87).chr(73).chr(78)))
                return true;

            return false;
        }

        public function ping($ip_addr){
            if ($this->myOS()){
                if (!exec("ping -n 1 -w 1 ".$ip_addr." 2>NUL > NUL && (echo 0) || (echo 1)"))
                    return true;
            } else {
                if (!exec("ping -q -c1 ".$ip_addr." >/dev/null 2>&1 ; echo $?"))
                    return true;
            }

            return false;
        }
    }

    $ip_addr = "151.101.193.69";

    if ((new CheckDevice())->ping($ip_addr))
        echo "The device exists";
    else 
        echo "The device is not connected";
        ?>