[PHP: working with arzoo api]

I've tried all day looking for the official documentation for the Arzoo api but didn't find one.. all i can see from the net is code examples(like the one below) from people and following that isn't really helpful

<?php    $location_URL = "http://59.162.33.102/ArzooWS/services/DOMFlightAvailability";$action_URL ="http://com.arzoo.flight.avail";$client = new SoapClient('http://59.162.33.102/ArzooWS/services/DOMFlightAvailability?wsdl', array('soap_version' => SOAP_1_1,'location' => $location_URL,'uri'      => $action_URL,'style'    => SOAP_RPC,'use'      => SOAP_ENCODED,'trace'    => 1,));$request = array('Request'=>array('Origin' => 'BOM','Destination' => 'DEL','DepartDate' => '2013-09-05','ReturnDate' => '2013-09-06','AdultPax' => '1','ChildPax' => '0','InfantPax' => '0','Currency' => 'INR','Clientid' => '777xxxx','Clientpassword' => '*5AF72AA053B7823D8EBBFE696080C9AD6B3DF69A','Clienttype' => 'ArzooFWS1.0','Preferredclass' => 'E','mode' => 'ONE','PreferredAirline' => 'AI,G8,IC,6E,9W,S2,IT,9H,I7,SG'));try{    $result = $client->__call('getAvailability',$request);    $response= htmlentities($result);}catch(Exception $e){    echo "<h2>Exception Error!</h2>";    echo $e->getMessage();}var_dump($response);?>

i want to use the Arzoo api to look up hotel and air ticket prices..any references on the official documentation of Arzoo api or any relevant material would be helpful