(PHP ActiveX) Add Header Field to MIME Sub-Header in Email

Demonstrates how to add a header field to one of the attachment sub-headers in an email.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Email')
$email = new COM("Chilkat.Email");

$email->Subject = 'test';
$email->AddTo('Chilkat','support@chilkatsoft.com');
$email->From = 'Matt <matt@example.com>';
$email->Body = 'This is a simple plain-text body.';

$success = $email->AddFileAttachment2('qa_data/1.HPM','application/x-hprimnet');
if ($success != 1) {
    print $email->LastErrorText . "\n";
    exit;
}

// Add a "ContentDescription: HPM/3.0" in the attachment's sub-header.
// The 1st attachment is at index 0.
$email->AddAttachmentHeader(0,'Content-Description','HPM/3.0');

// Show the email MIME:
print $email->getMime() . "\n";

// This is the output:
// (Note: When Chilkat sends email, all CKX-* headers are removed prior to sending.)

// MIME-Version: 1.0
// Date: Wed, 16 Jan 2019 10:05:18 -0600
// Message-ID: <93B88835586270B7BE5202F84E171F29C10BA935@CHILKATSLICE>
// Content-Type: multipart/mixed; boundary="------------000502000000020502010608"
// X-Priority: 3 (Normal)
// Subject: test
// To: Chilkat <support@chilkatsoft.com>
// From: Matt <matt@example.com>
// CKX-Bounce-Address: matt@example.com
// 
// --------------000502000000020502010608
// Content-Type: text/plain; charset=us-ascii; format=flowed
// Content-Transfer-Encoding: 7bit
// 
// This is a simple plain-text body.
// --------------000502000000020502010608
// Content-Type: application/x-hprimnet; name="1.HPM"
// Content-Transfer-Encoding: base64
// Content-Disposition: attachment; filename="1.HPM"
// Content-Description: HPM/3.0
// 
// FILE_DATA_IS_HERE...
// 
// --------------000502000000020502010608--

?>