note 90040 added to function.gethostbyaddr

The use of the shell command to speed things up seems to work very well, but I would suggest one thing: you ARE executing a shell command, so it would seem to be a good idea to be absolutely sure of your input. Something like this perhaps: function gethost ($ip) { //Make sure the input is not going to do anything unexpected //IPs must be in the form x.x.x.x with each x as a number $testar = explode('.',$ip); if (count($testar)!=4) return $ip; for ($i=0;$i<4;++$i) if (!is_numeric($testar[$i])) return $ip; $host = host $ip; return (($host ? end ( explode (' ', $host)) : $ip)); } ---- Server IP: 208.69.120.35 Probable Submitter: 72.66.9.25 ---- Manual Page -- http://www.php.net/manual/en/function.gethostbyaddr.php Edit -- https://master.php.net/note/edit/90040 Del: integrated -- https://master.php.net/note/delete/90040/integrated Del: useless -- https://master.php.net/note/delete/90040/useless Del: bad code -- https://master.php.net/note/delete/90040/bad+code Del: spam -- https://master.php.net/note/delete/90040/spam Del: non-english -- https://master.php.net/note/delete/90040/non-english Del: in docs -- https://master.php.net/note/delete/90040/in+docs Del: other reasons-- https://master.php.net/note/delete/90040 Reject -- https://master.php.net/note/reject/90040 Search -- https://master.php.net/manage/user-notes.php