note 86793 added to function.ip2long

Hi all! I've maded simple script that allow you filter traffic by networks, like if you want to deny 192.168.0.0/24 I used ncritten's myip2long function for this. Sorry for such non-optimized code, but it works enough good =) file iplist.txt: 192.168.0.0/24 172.16.0.0/16 10.0.0.0/8 --------------------------------------------------------------------- ########### ncritten's function myip2long function myip2long($ip) { if (is_numeric($ip)) { return sprintf("%u", floatval($ip)); } else { return sprintf("%u", floatval(ip2long($ip))); } } ########### function to chek ip if it in one of denyied/allowed networks =) function ipfilter($ip) { $match = 0; ### converting ip address in binary $ip_addr = decbin(myip2long($ip)); ### the file wich contains allowed/denyied networks if (fopen("iplist.txt", "r")) { $source = file("iplist.txt"); foreach ($source as $line) { ### exploding each network to obtaid network address and cidr $network = explode("/", $line); $net_addr = decbin(myip2long($network[0])); $cidr = $network[1]; ### and finaly cheking quantity of network bits from left to right wich is equal to cidr is equal to the same bits of ip address if (substr($net_addr, 0, $cidr) == substr($ip_addr, 0, $cidr)) { $match = 1; break; } } } return $match; } ### this function will return 1 if IP match to some network or 0 if will not match ### and finaly the chek will be like this $user_ip = $_SERVER['REMOTE_ADDR']; if (ipfilter($user_ip) == 1) echo "allowed!"; else echo "deny!"; --------------------------------------------------------------------- Good Luck! P.S. Sorry for my bad english =) ---- Server IP: 69.147.83.197 Probable Submitter: 89.28.0.121 ---- Manual Page -- http://www.php.net/manual/en/function.ip2long.php Edit -- https://master.php.net/note/edit/86793 Del: integrated -- https://master.php.net/note/delete/86793/integrated Del: useless -- https://master.php.net/note/delete/86793/useless Del: bad code -- https://master.php.net/note/delete/86793/bad+code Del: spam -- https://master.php.net/note/delete/86793/spam Del: non-english -- https://master.php.net/note/delete/86793/non-english Del: in docs -- https://master.php.net/note/delete/86793/in+docs Del: other reasons-- https://master.php.net/note/delete/86793 Reject -- https://master.php.net/note/reject/86793 Search -- https://master.php.net/manage/user-notes.php