note 39151 added to ref.sockets

I spent a while trying to use SOCK_RAW to send ICMP request packets so i could ping. This however lead me to need the internet checksum written as a php function, which was a little hard because of the way PHP handles variable types. Anyway, to save others the effort heres what i came up with, this returns Checksum for $data <?PHP // Computes Internet Checksum for $data // will return a 16-bit internet checksum for $data function inetChecksum($data) { // 32-bit accumilator, 16 bits at a time, adds odd bit on at end for($i=0;$i<strlen($data);$i += 2) { if($data[$i+1]) $bits = unpack('n*',$data[$i].$data[$i+1]); else $bits = unpack('C*',$data[$i]); $sum += $bits[1]; } // Fold 32-bit sum to 16 bits while ($sum>>16) $sum = ($sum & 0xffff) + ($sum >> 16); $checksum = pack('n1',~$sum); return $checksum; } ?> And with this i was able to construct a correct PING Request. ---- Manual Page -- http://www.php.net/manual/en/ref.sockets.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+39151 Delete -- http://master.php.net/manage/user-notes.php?action=delete+39151&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+39151&report=yes Search -- http://master.php.net/manage/user-notes.php