PHP

Count the Report Parts in a multipart/report Email

Demonstrates the read-only Chilkat Email.NumReports property, which is the number of report parts in a multipart/report email. A part is counted as a report when its Content-Type is message/* (except message/rfc822) or text/rfc822-headers. Use GetReport to retrieve the body of each report part; indexes are zero-based. This example loads a report email and prints each report part.

Background: When a message can't be delivered, the mail system usually sends back a bounce known as a Delivery Status Notification (DSN). DSNs use the multipart/report structure, which bundles several parts: a human-readable explanation, a machine-readable message/delivery-status part describing exactly what happened (recipient, status code, failing server), and often the original message's headers. Reading these report parts lets a program automatically detect and process bounces.

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<?php

use Chilkat2\Email;

// Demonstrates the read-only Email.NumReports property, which is the number of report
// parts in a multipart/report email (for example, a Delivery Status Notification).
// Use GetReport to retrieve the body of each report part.  Indexes are zero-based.

$email = new Email();

// Load a multipart/report email (such as a bounce / DSN message).
try {
    $email->LoadEml('qa_data/eml/dsn_bounce.eml');
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

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

for ($i = 0; $i < $n; $i++) {
    echo '---- Report ', $i, " ----\n";
    echo $email->GetReport($i), "\n";
}