/**
* \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;
}
}
