Re[2]: [PHP-WIN] Ping!

Oh well, form John T.'s and Jason B.'s answers I get it that it won't be that easy. I hadn't checked the "sockets" functions that Jason points out (another reason to download the manual more frequently...), but I don't have a compiler (and really don't know how to compile). I think I'll have to go for the platform dependent "ping" way. Strange enough, the manual (online, not mine...) explains how to open an UDP socket, so I tried opening one to port 139 on some machines, and always get a "true" result, even if the computer doesn't exist. Funny, why does it allways return true? That would be a solution, if I could get it to work. This is what I'm trying: $host="udp://192.168.220.108"; $port=139; $s=fsockopen($host,$port); if (!$s) { echo "Not here"; } else { echo "I'm here"; } fclose($s); Any ideas? Gonzalo. > Did you check here? > http://www.php.net/manual/ref.sockets.php > jason >> I've checked both ping C source code and PHP4 manual. >> ICMP packets can only be sent through a RAW socket. >> PHP only allows to open standard TCP sockets. >> So it'll be hard to make it send ICMP packets :( >> But you can still build your php extension which will support this, if > you >> want it ... ;oD >> >> Cheers, >> John.