There was a question in decrypting nix, could you help?

Question

PHP

Guys, could you help with decoding the exec fragment inside the brackets, both the first and the second. My ultimate task is to ping a gray ip every 30 seconds and display information about its status. If there are options about the implementation, I will be very grateful.

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

Answer 1

exec("ping -n 1 -w 1 ".$phone_ip." 2>NUL > NUL && (echo 0) || (echo 1)")

Send one ICMP packet to the IP address from the variable phone_ip, wait one second for a response, return 0 if a response is received, otherwise 1.
The same, only the return code is returned ping.

Answer 2

the first option for Windows, the second for Unix, the
keys say that you need to ping once and as quietly as possible, throw out all the output, except for stderr, if it exists, then print 0 otherwise 1.
Something like this.