/** * \brief Compute the first and the last address of a network. * That is usefull, for instance, to compute the "real" network address (the first address) * or the broadcast address of the network * * @param $address (see \ref parameterType) the address of the network * @param $netmask (see \ref parameterType) its netmask * @param $firstAddress (see \ref parameterType - in/out) * the first address (ie real address of the network) * @param $lastAddress (see \ref parameterType - in/out) * the lastAddress of the network * (ie. : the broadcast address) (default NULL) * @param $excludeBroadcastAndNetwork boolean exclude broadcast and network address from the * result (false by default) **/ static function computeNetworkRangeFromAdressAndNetmask($address, $netmask, &$firstAddress, &$lastAddress = NULL, $excludeBroadcastAndNetwork = false) { if ($address instanceof IPAddress) { $address = $address->getBinary(); } if ($netmask instanceof IPNetmask) { $netmask = $netmask->getBinary(); } $start = array(); $end = array(); for ($i = 0; $i < 4; ++$i) { $start[$i] = IPAddress::convertNegativeIntegerToPositiveFloat($address[$i] & $netmask[$i]); $end[$i] = IPAddress::convertNegativeIntegerToPositiveFloat($address[$i] | ~$netmask[$i]); } if ($excludeBroadcastAndNetwork) { IPAddress::addValueToAddress($start, 1); IPAddress::addValueToAddress($end, -1); } if ($firstAddress instanceof IPAddress) { $firstAddress->setAddressFromBinary($start); } else { $firstAddress = $start; } if ($lastAddress instanceof IPAddress) { $lastAddress->setAddressFromBinary($end); } else { $lastAddress = $end; } }