php - How to dump SoapClient request for debug?

Question

I need to debug some code which uses soap client. I found getLast* methods in php.net, but when I try to get last request for debug it returns NULL

<?php

    $client = new SoapClient("http://www.webservicex.net/ConverPower.asmx?WSDL");
    
    $response = $client->ChangePowerUnit(array(
        "PowerValue" => 100,
        "fromPowerUnit" => "horsepower",
        "toPowerUnit" => "megawatts"
    ));
    
    
    echo "====== REQUEST HEADERS =====" . PHP_EOL;
    var_dump($client->__getLastRequestHeaders());
    echo "========= REQUEST ==========" . PHP_EOL;
    var_dump($client->__getLastRequest());
    echo "========= RESPONSE =========" . PHP_EOL;
    var_dump($response);

?>

The result of code execution:

$php soap_test.php 

====== REQUEST HEADERS =====
NULL
========= REQUEST ==========
NULL
========= RESPONSE =========
object(stdClass)#2 (1) {
  ["ChangePowerUnitResult"]=>
  float(0.0746)
}

How to get the content of body and headers of the last SoapClient request?

Answer 1

These functions only works if the SoapClient object was created with the trace option set to TRUE.

Try:

$client = new SoapClient("http://www.webservicex.net/ConverPower.asmx?WSDL", array('trace' => 1));