Question

I am trying to set up a SOAP service in php.
I declared a server php function and I am able to call that function with a SOAP type http request where the content is my SOAP envelope.

The XML content of the SOAP body is the argument of the function I assume, but I don’t know how to access the information in it in my php code.

I noticed that the function argument is an instance of stdClass by default, and I actually wonder why it is not casted on an XML or DOM object by php – it’s a SOAP call isn’t it?
But all right, now it’s up to me to get the information out of the object, which is not easy because there’s no methods assigned to stdClass, so it’ll have to be standard php functions.
So I tried serialize, but this gave me some rubbish, not the XML string I expected.

What to do?

EDIT

note that below has no example code of what I wish to do – get some detail data from the XML content of the SOAP request – because I don’t know how to code getting it from the stdClass object

On request of david, here’s some details.

php code:

<?php
    function mi102($arg) {
        $txt = serialize ($arg);
        $result = new SoapVar ($txt, XSD_ANYXML);
        return($result);
    }
    ini_set( "soap.wsdl_cache_enabled", "0");
    $server = new SoapServer ("test.wsdl");
    $server -> addFunction ("mi102");
    try {
        $server -> handle();
    }
    catch (Exception $e) {
        $server -> fault ('Client', $e -> getMessage());
    }
?php>

http request is constructed by an application that I use; the http header and the soap envelope + body are generated around the XML I feed it:

SOAP request body content:

<mi102 xmlns="http://pse">
  <cdhead cisprik="21"/>
  <instr>
    <insid>
      <bcdt>20120930</bcdt>
    </insid>
  </instr>
</mi102>

The WSDL used is as follows:

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tns="http://pse/" xmlns:xs="http://www.w3.org/2001/XMLSchema" name="PSE" targetNamespace="http://pse/">
    <types>
        <xs:schema>
            <xs:import namespace="http://pse/" schemaLocation="PSE.xsd"/>
        </xs:schema>
    </types>
    <message name="MI102Req">
        <part name="cdhead" type="tns:cdhead_T"/>
        <part name="instr" type="tns:instr_T"/>
    </message>
    <message name="Res">
        <part name="cdhead" type="tns:cdhead_T"/>
    </message>
    <portType name="MIPortType">
        <operation name="mi102">
            <input message="tns:MI102Req"/>
            <output message="tns:Res"/>
        </operation>
    </portType>
    <binding name="MIBinding" type="tns:MIPortType">
        <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
        <operation name="mi102">
            <soap:operation soapAction="http://testServerURL/test_soap.php#mi102"/>
            <input>
                <soap:body use="literal" namespace="http://pse/"/>
            </input>
            <output>
                <soap:body use="literal" namespace="http://pse/"/>
            </output>
        </operation>
    </binding>
    <service name="PSE">
        <port name="MIPortType" binding="tns:MIBinding">
            <soap:address location="http://testServerURL/test_soap.php"/>
        </port>
    </service>
</definitions>

And the resulting XML (again, extracted from the SOAP body by the application I use), is

SOAP response:

<?xml version="1.0" encoding="UTF-8"?>
<ns1:mi102Response xmlns:ns1="http://pse/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">O:8:"stdClass":2:{s:7:"cisprik";i:21;s:7:"version";s:2:"13";}</ns1:mi102Response>

Not nice.

Answer 1

I eventually found the answer in other threads on SO, like get-recieved-xml-from-php-soap-server

The solution is to use the following:

$inp = file_get_contents ('php://input');

Note: I could not find any function that can act on the stdClass input argument and can retrieve the XML SOAP Body contents from it.
So the best option is to use the standard php input variable. Note that this has the following structure: Envelope/Body/..inputXML.., which is the exact http request content that is posted to the server.

Note: http_get_request_body may work too, but my php server did not support this function. I think that file_get_contents is supported on every php server from some version onwards.