helper script to return interface IP on pfSense

if_ip.php

#!/usr/bin/env php
<?php

require_once('interfaces.inc');

$ifaces = get_configured_interface_with_descr();
asort($ifaces);

$it = trim($argv[1]);
if (empty($it)) {
	echo "specify an interface (BSD names also accepted e.g. ix0):\n";
	foreach ($ifaces as $k => $v) {
		printf("%-10s  %s\n", $k, $v);
	}
	exit();
}

$realif = get_real_interface($it);
if (empty($realif)) {
	die("interface '$it' does not exist\n");
}

$ip = get_interface_ip($realif) ?: get_interface_ipv6($realif);

echo $ip . PHP_EOL;

from: https://forum.netgate.com/topic/200305/read-the-public-ip

Instructions

1. ssh to your pfSense
2. select option 8 (Shell)
3. paste the commands below:

mkdir -p /root/bin
curl -Lso /root/bin/if_ip.php https://gist.github.com/luckman212/855f4f9243eb1b7a698d902ba4ed280e/raw
chmod +x /root/bin/if_ip.php

Now, you can query for the IP of any interface remotely via

ssh <pfsense-ip> /root/bin/if_ip.php <friendlyname|bsd_name>

tip: running without any argument will list configured interfaces

Examples

# ssh r1.lan /root/bin/if_ip.php wan
180.70.60.23

# ssh r1.lan /root/bin/if_ip.php igb0
192.168.10.1

I updated the gist slightly since the original, it now correctly handles interfaces that ONLY have an IPv6 (e.g. GIF interfaces part of an HENET tunnel).