php xml转换成.net二进制格式

有没有人试图连接到soap服务器，实现。net二进制编码(http://msdn.microsoft.com/en-us/library/cc219175.aspx)使用php curl或soapClient..当我尝试使用curl连接到url时，我总是收到400个错误请求，因为我需要将XML转换为。net二进制格式

谢谢…

soap_request美元= "

$url    = 'https://webapp.healthcaresynergy.com:8002/demoalpha/HealthCareServiceWCF.svc?singleWsdl';
$header = array(
'Content-type: application/soap+msbin1',
'Expect: ',
'SOAPAction: urn:HealthCareServiceWCF/Login',
'Content-length: '.strlen($soap_request),
  );
$ch = curl_init(); 
curl_setopt_array($ch , array( 
    CURLOPT_RETURNTRANSFER  => true,
    //CURLOPT_ENCODING        => 'gzip',
    CURLOPT_HEADER          => true,
    CURLOPT_FOLLOWLOCATION  => true,
    CURLOPT_USERAGENT       => 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.0.3705; .NET CLR 1.1.4322)',
    //CURLOPT_VERBOSE         => true,
    //CURLOPT_STDERR          => $verbose = fopen('php://temp', 'rw+'), 
    CURLOPT_URL             => $url ,
   CURLOPT_POSTFIELDS      => 1, 
    CURLOPT_POSTFIELDS      => $soap_request,
CURLOPT_HTTPHEADER      => $header ,
CURLOPT_CUSTOMREQUEST => 'POST'
));
$output = curl_exec($ch);
$info   = curl_getinfo($ch);
if($output === false)  {
    $err = 'Curl error: ' . curl_error($ch);
}  else { 
    echo 'Operation success';
} echo '<pre>';
print_r($info);
//echo "Verbose information:'n<pre>", !rewind($verbose),     htmlspecialchars(stream_get_contents($verbose)), "</pre>'n";
curl_close($ch);
$s = htmlspecialchars($output);
echo $s;