使用Content-type：application / xml发送POST数据

Question

I want to see XML data that is being POSTed via email.

The process:

1) XML POST is made to a PHP script.

2) The PHP script simply mails me the $_POST data via print_r($_POST, true) as the message.

I am using PHPMailer and SimpleXML to accomplish this.

Here is my code which POSTs the XML:

$xml = new SimpleXMLElement('<lead/>');
$post_body = array_flip($template['post_body']);
array_walk_recursive($post_body, array($xml, 'addChild'));

$stream_options = array(
    'http' => array(
       'method'  => 'POST',
       'header'  => "Content-type: application/xml
",
       'content' => $xml->asXML(),
    ),
);
$context  = stream_context_create($stream_options);
$response = file_get_contents($template['address'], null, $context);

$post_body is an array which looks like this:

Array
(
    [testbuyer] => buyerName
    [[e-mail]] => testEmail
    [Timothy] => leadFirstName
    [world] => customTest2
)

Here is my code which sends the email:

try
{
    $mailer = new PHPMailer();
    $mailer->isSMTP();
    $mailer->Host = EMAIL_HOST;
    $mailer->Port = EMAIL_PORT;
    $mailer->SMTPAuth = true;
    $mailer->Username = EMAIL_USERNAME;
    $mailer->Password = EMAIL_PASSWORD;
    $mailer->setFrom(EMAIL_ADDRESS);
    $mailer->addAddress('[e-mail]');
    $mailer->Subject = 'Test POST';
    $mailer->Body = print_r($_POST, true);      
    $mailer->send();

    $response = 'Mail sent OK';
} 
catch (phpmailerException $e)
{ 
   $response = $e->errorMessage();
} 
catch (Exception $e)
{ 
   $response = $e->getMessage();
}

I receive the email fine, but the message just shows an empty array. It looks like this:

Array
(
)

Why is this happening? I just want to see the XML in the message so I can verify its all working properly. Any help would be appreciated.