<?php
// debug mode, make debug = 1
$debug = 0;
$whitelist_ip = array();
$cmd = "/usr/sbin/asterisk -rx 'sip show peers'";
exec($cmd, $result);
$debug && print_r ($result);
$debug && print "\n========================\n";
foreach ($result as $line) {
$parts = preg_split('/\s+/', $line);
$debug && print_r ($parts);
foreach ($parts as $chars) {
// detech IP V4 address
if (filter_var($chars, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
// detect duplicate entry first
if (!in_array($chars, $whitelist_ip)) {
array_push ($whitelist_ip, $chars);
}
}
}
$debug && print "\n========================\n";
}
print_r($whitelist_ip);
?>