SOAP Debug that dumps XML response, with some boilerplate for Magento 1

soap-debug.php

<?php

class SoapClientDebug extends SoapClient
{
        public function __doRequest($request, $location, $action, $version, $one_way = 0)
        {
            error_log("REQUEST:\n" .$request . "\n");
            error_log("LOCATION:\n" .$location . "\n");
            error_log("ACTION:\n" .$action . "\n");
            error_log("VERSION:\n" .$version . "\n");
            error_log("ONE WAY:\n" .$one_way . "\n");
            $response = parent::__doRequest($request, $location, $action, $version, $one_way);
            error_log("RESPONSE:\n" .$response . "\n");
            return $response;
        }
}

$proxy = new SoapClientDebug('<wsdl>'); 

###

#
# Magento 1 - Soap V2
#

# $sessionId = $proxy->login('<user>', '<pass>');
# $result = $proxy->salesOrderInfo($sessionId, '<order-id>');

#
# Others
#

###

var_dump($result);