Net_IPv4::validateNetmask() Net_IPv4::calculate()
Net_IPv4
PEAR Manual

Net_IPv4::parseAddress()

Net_IPv4::parseAddress() -- Parse a CIDR address (address/netmask combination).

Synopsis

    require_once('Net/IPv4.php');

bool parseAddress ( string $address )

Description

Parses a Classless Inter-Domain Routing address (e.g. 192.168.1.0/24) and stores information in the object variables network, ip, netmask, broadcast, long and bitmask.

Example

How to get netmask and broadcast from CIDR address


<?php

require('Net/IPv4.php');

$cidr = '192.168.0.50/16';
$net = Net_IPv4::parseAddress($cidr);
echo $net->network;   // 192.168.0.0
echo $net->ip;        // 192.168.0.50
echo $net->broadcast; // 192.168.255.255
echo $net->bitmask;   // 16
echo $net->long;      // 3232235520 (long/double version of 192.168.0.50)
echo $net->netmask;   // 255.255.0.0

?>

Return value

boolean - Returns TRUE on success, PEAR_Error on failure.

Note

This function can not be called statically.
Net_IPv4::validateNetmask() Net_IPv4::calculate()
Net_IPv4
PEAR Manual