<?php
$url = "https://85.236.4.226:543/NotifyOrderStatus.ashx";
$cert_file = 'cert/client.crt';
$key_file = 'cert/client.key';
//$cert_password = 'nosecure';
$data_string = '<?xml version="1.0" encoding="utf-8"?>
<NotifyOrderStatusMessage xmlns="http://tempuri.org/XMLSchema.xsd">
<Orders>
<Order>
<InternalOrderId>X100500</InternalOrderId>
<StatusCode>40</StatusCode>
<StatusDateTime>2013-01-01T12:30:00.0</StatusDateTime>
</Order>
<Order>
<Order>
<InternalOrderId>X100510</InternalOrderId>
<StatusCode>20</StatusCode>
<StatusDateTime>2013-01-01T12:30:00.0</StatusDateTime>
<StatusReason>Клиент не отвечает на звонки курьера в течении 3 дней</StatusReason>
</Order>
</Orders>
</NotifyOrderStatusMessage>';

$ch = curl_init();

$options = array(
    CURLOPT_RETURNTRANSFER => true,
    //CURLOPT_HEADER => true,
    CURLOPT_FOLLOWLOCATION => true,
    CURLOPT_SSL_VERIFYHOST => false,
    CURLOPT_SSL_VERIFYPEER => false,
    CURLOPT_USERAGENT => 'Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)',
    CURLOPT_VERBOSE => true,
    CURLOPT_URL => $url ,
    CURLOPT_POST => 1,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_POSTFIELDS => $data_string,
    CURLOPT_HTTPHEADER => array('Content-type: application/xml', 'Content-length: '. strlen($data_string)),
    CURLOPT_HEADER => true,
    CURLOPT_SSLCERT => $cert_file ,
    //CURLOPT_SSLCERTPASSWD => $cert_password ,
     CURLOPT_SSLKEY => $key_file
);

curl_setopt_array($ch, $options);

$output = curl_exec($ch);

if (!$output) {
    echo "Curl Error : " . curl_error($ch);
} else {
    echo htmlentities($output);
}