Net_IPv4::calculate() -- Calculates network information based on an IP address and netmask.
Description
Fully populates the object properties based on the IP address and
netmask/bitmask properties. Once these two fields are populated,
calculate() will perform calculations to determine the network and
broadcast address of the network.
Example
Example 54-1. Calculating broadcast and network address
<?php
require 'Net/IPv4.php';
// create IPv4 object
$ip_calc = new Net_IPv4();
// set variables
$ip_calc->ip = "192.168.1.10";
$ip_calc->netmask = "255.255.255.0";
/* alternative method with numerical values:
$ip_calc->long = 3232235786;
$ip_calc->bitmask = 24;
*/
// calculate
$error = $ip_calc->calculate();
if (!is_object($error))
{
// if returned true, output
echo "Your network address: ".$ip_calc->network."<br />";
echo "Your broadcast address: ".$ip_calc->broadcast."<br />";
}
else
{
// otherwise handle error
echo "An error occured: ".$error->getMessage();
}
?>
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Return value
boolean - Returns TRUE on success,
PEAR_Error on failure.
Note
This function can not be called
statically.
