PHP Extension

Zip an Email's Attachments into One File

Demonstrates the Chilkat Email.ZipAttachments method, which replaces all of an email's attachments with a single Zip file attachment having the specified filename. The original attachments are removed and packed into the Zip. This example adds two attachments and zips them into one.

Background: Bundling multiple attachments into a single .zip keeps a message tidy, compresses the payload, and works around recipients or gateways that limit the number of attachments. Note that the filename here (files.zip) names the attachment inside the message — it is not a path on disk. The reverse operation is UnzipAttachments.

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<?php

include("chilkat.php");

$success = false;

//  Demonstrates the ZipAttachments method, which replaces all of an email's attachments
//  with a single Zip file attachment having the specified filename.  The original
//  attachments are removed and packed into the Zip.

$email = new CkEmail();
$email->put_Subject('Zip the attachments');

$email->AddStringAttachment('a.txt','first attachment');
$email->AddStringAttachment('b.txt','second attachment');
print 'NumAttachments before = ' . $email->get_NumAttachments() . "\n";

//  Replace all attachments with a single Zip attachment named "files.zip".
$success = $email->ZipAttachments('files.zip');
if ($success == false) {
    print $email->lastErrorText() . "\n";
    exit;
}

print 'NumAttachments after = ' . $email->get_NumAttachments() . "\n";

?>