<?php
    #Define Authentication 
    $SOAP_AUTH = array( 'login'    => 'webservice',
                        'password' => 'newpassword');

    #Specify WSDL
    $WSDL = "http://sap-demo-erp:8000/sap/bc/srt/wsdl/bndg_E12A6C3F738FFCF1B96C000C29E29F3D/wsdl11/allinone/standard/document?sap-client=001";

    #Create Client Object, download and parse WSDL
    $client = new SoapClient($WSDL,$SOAP_AUTH);
    
    #Setup input parameters (SAP Likes to Capitalise the parameter names)
    $params = array(
            'Inmatnr' => "DEMO1"
    );

    #Call Operation (Function). Catch and display any errors
    try
    {
       $result = $client->ZSoapDemo1($params);
    }
    catch (SoapFault $exception)
    {
        print "***Caught Exception***\n";
        print_r($exception);
        print "***END Exception***\n";
        die();
    }
    
    #Out the results
    print_r($result);
?>