note 71955 modified in function.ip2long by danbrown

Here's a simple IP address match checking function. It takes 3 arguments: ip address to check (after ip2long), ip address to check against (after ip2long), and mask to check against (integer 0-32). Just make sure you perform ip2long on the ip addresses before inputting them to the function. <?php function match_ip($check_ip, $match_ip, $match_mask = 32) { for ($i = 0 ; $i < $match_mask ; $i++) { $n = pow(2, 31 - $i) ; if (($n & $check_ip) != ($n & $match_ip)) { return FALSE ; } } return TRUE ; } ?> I've been looking for a function like this for a while, i hope it helps someone. --was-- Here's a simple IP address match checking function. It takes 3 arguments: ip address to check (after ip2long), ip address to check against (after ip2long), and mask to check against (integer 0-32). Just make sure you perform ip2long on the ip addresses before inputting them to the function. function match_ip($check_ip, $match_ip, $match_mask = 32) { for ($i = 0 ; $i < $match_mask ; $i++) { $n = pow(2, 31 - $i) ; if (($n & $check_ip) != ($n & $match_ip)) { return FALSE ; } } return TRUE ; } I've been looking for a function like this for a while, i hope it helps someone. http://php.net/manual/en/function.ip2long.php