Check_Host

<?php

$client = new SoapClient(null, [
    'location' => 'http://regtons.com/soap/cmd.php',
    'uri' => 'http://regtons.com/soap'
]);

$login_input = [
    'login' => 'demo',
    'password' => 'demouser'
];

$login_output = $client->__call('Login', ['data' => $login_input]);

$input = [
    'ssid' => $login_output['data']['ssid'],
    'hostname' => 'ns.exampledomain.com'
];

$output = $client->__call('Check_Host', ['data' => $input]);

print_r($input);
print_r($output);


$input:

Array
(
    [ssid] => 51aca4e95c12821b56a9045babc943e7
    [hostname] => ns.exampledomain.com
)


$output:

Array
(
    [status] => ok
    [hostname] => ns.exampledomain.com
    [avail] => 1
)