PHP

Count the Messages in a multipart/digest Email

Demonstrates the read-only Chilkat Email.NumDigests property, which is the number of message/rfc822 parts contained within a multipart/digest enclosure. If no such enclosure exists, the value is 0. Digest indexes are zero-based; use GetDigestEmail to retrieve an individual bundled message as its own Email object. This example loads a digest email and lists each message's subject.

Background: A multipart/digest is a way to package many separate emails inside one carrier message — historically used by mailing lists to send a single daily "digest" containing all of that day's posts. Each bundled item is a complete message/rfc822 email with its own headers and body. This differs from NumAttachedMessages, which counts nested messages attached to an ordinary email rather than the members of a digest enclosure.

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<?php

use Chilkat2\Email;

// Demonstrates the read-only Email.NumDigests property, which is the number of
// message/rfc822 parts contained within a multipart/digest enclosure.  If there is no
// multipart/digest enclosure, the value is 0.  Digest indexes are zero-based.

$email = new Email();

// Load a multipart/digest email (a single email that bundles many messages).
try {
    $email->LoadEml('qa_data/eml/digest.eml');
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

$n = $email->NumDigests;
echo 'NumDigests = ', $n, "\n";

// Retrieve each bundled message as its own Email object.
$digestEmail = new Email();
for ($i = 0; $i < $n; $i++) {
    $email->GetDigestEmail($i, $digestEmail);
    echo 'Digest ', $i, ' subject: ', $digestEmail->Subject, "\n";
}

// Note: Paths such as "qa_data/..." are relative local filesystem paths,
// relative to the current working directory of the running application.