PHP 5.3 SoapClient with cURL request

example.php

<?php
require_once(' SoapClientCurl.php');

//Set absolute path to wsdl file
$wsdlfile = '/path/to/wsdlfile.wsdl'; // Edit this

//Define options
$options = array(
    'certfile'=>$certfile, // e.g. '/path/to/certfile.crt'
    'keyfile'=>$keyfile, // e.g. '/path/to/keyfile.key'
    'url'=>$url, // e.g. 'https://webservice.example.com/'
    'passphrase'=>$passphrase  // e.g. 'superSecretPassphrase'
);

//Init client
$client = new SoapClientCurl($wsdlfile,$options);

//Request:
$client->Method($data);

SoapClientCurl.php

/**
* Class SoapClientCurl extends SoapClient __doRequest method with curl powered method
*/
class SoapClientCurl extends SoapClient{
 
    //Required variables
    public $url         = null;
    public $certfile    = null; 
    public $keyfile     = null; 
    public $passphrase  = null;
 
    //Overwrite constructor and add our variables
    public function __construct($wsdl, $options = array()){
 
        parent::__construct($wsdl, $options);
 
        foreach($options as $field => $value){
            if(!isset($this->$field)){
                $this->$field = $value;
            }
        }
    }
 
    /*
     * Overwrite __doRequest and replace with cURL. Return XML body to be parsed with SoapClient
     */
    public function __doRequest ($request, $location, $action, $version, $one_way = 0) {
 
        //Basic curl setup for SOAP call
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $this->url); //Load from datasource
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        //curl_setopt($ch, CURLOPT_HEADER, 1);
        curl_setopt($ch, CURLINFO_HEADER_OUT, 1);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/xml', 'SOAPAction: ""'));
        curl_setopt($ch, CURLOPT_POSTFIELDS, $request);
        curl_setopt($ch, CURLOPT_TIMEOUT, 30);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
 
        //SSL
        curl_setopt($ch, CURLOPT_SSLVERSION, 3); //=3
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($ch, CURLOPT_SSLCERT, $this->certfile);
        curl_setopt($ch, CURLOPT_SSLKEY, $this->keyfile);
        curl_setopt($ch, CURLOPT_SSLKEYTYPE, 'PEM');
        curl_setopt($ch, CURLOPT_SSLKEYPASSWD, $this->passphrase); //Load from datasource
 
        //Parse cURL response
        $response            = curl_exec ($ch);
        $this->curl_errorno  = curl_errno($ch);
 
        if ($this->curl_errorno == CURLE_OK) {
            $this->curl_statuscode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        }
        $this->curl_errormsg  = curl_error($ch);
 
        //Close connection
       curl_close($ch);
 
        //Return response info
        return $response;
    }
}