SimpleSoapClient.php

<?php

class SimpleSoapClient
{
    /**
     * @var string
     */
    protected $username;

    /**
     * @var string
     */
    protected $password;

    /**
     * @param $username
     * @param $password
     */
    public function __construct($username, $password)
    {
        $this->username = (string) $username;
        $this->password = (string) $password;
    }

    /**
     * @param $soapUrl
     * @param $soapAction
     * @param $requestBody
     * @return string
     * @throws \ErrorException
     */
    public function request($soapUrl, $soapAction, $requestBody)
    {
        $requestContext = self::prepareStreamContext($soapAction, $requestBody);
        $level = error_reporting(0);
        $responseContent = file_get_contents($soapUrl, null, $requestContext);
        error_reporting($level);
        if (false === $responseContent) {
            $error = error_get_last();
            throw new \ErrorException($error['message']);
        }
        return $responseContent;
    }

    /**
     * @return string
     */
    protected function getBasicAuth()
    {
        return base64_encode($this->username . ':' . $this->password);
    }

    /**
     * @param $soapAction
     * @param $requestBody
     * @return resource
     */
    protected function prepareStreamContext($soapAction, $requestBody)
    {
        return stream_context_create(array(
            'http' => array(
                'method' => 'POST',
                'header' => implode("\r\n", array(
                    'Connection: Close',
                    'User-Agent: PHP-SOAP/' . phpversion(),
                    'Content-Type: text/xml; charset=utf-8',
                    'SOAPAction: "' . $soapAction . '"',
                    'Content-Length: '. strlen($requestBody),
                    'Authorization: Basic ' . $this->getBasicAuth(),
                )),
                'content' => $requestBody,
                'protocol_version' => '1.0',
                'ignore_errors' => false,
                'max_redirects' => 10,
                'timeout'=> 5,
            ),
            'ssl' => array(
                'verify_peer' => false,
            ),
        ));
    }
}