(PHP Extension) Get the Email Received Date/Time

Get's the date/time from the topmost Received header. The date/time of when you received an email may be different than the date/time stored in the Date header field, which if truthful, is the date when the email was sent.

The Received header field will look something like this:

Received: from mail.example.com (mail.example.com [99.255.255.99])
 by inbound-smtp.us-west-2.amazonaws.com with SMTP id 72ma443vs1g0o6vqd8erojkpss35s0dt32h323o1
 for admin@chilkatsoft.com;
 Wed, 25 Jul 2018 08:04:23 +0000 (UTC)

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

$email = new CkEmail();

$success = $email->LoadEml('qa_data/eml/p.eml');
if ($success != true) {
    print $email->lastErrorText() . "\n";
    exit;
}

$sb = new CkStringBuilder();
$sb->Append($email->getHeaderField('Received'));

//  Replace semicolons with CRLF's
$numReplaced = $sb->Replace(';','\r\n');

$st = new CkStringTable();
$st->AppendFromSb($sb);

if ($st->get_Count() == 0) {
    print 'Should have at least one line..' . "\n";
    exit;
}

//  The date/time string is the last line in the string table.
$sb->SetString($st->stringAt($st->get_Count() - 1));
$sb->Trim();

print 'Received date/time = ' . $sb->getAsString() . "\n";

?>