(PHP Extension) Iterate MIME Parts of an Email

Demonstrates how to iterate over the MIME sub-parts of an email, and retrieve the content of each MIME sub-part body.

Note: This example requires some new features added to Chilkat v9.5.0.95.

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<?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");

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

// See the following Chilkat post to Quickly Understand Email MIME

$email = new CkEmail();

$success = $email->LoadEml('qa_data/eml/sample.eml');
if ($success == false) {
    print 'Failed to load .eml' . "\n";
    exit;
}

$sbContentType = new CkStringBuilder();
$caseSensitive = false;

// Get the total number of non-multipart MIME sub-parts.
// (This is a simple way of iterating over all the MIME leaf parts regardless of the MIME tree structure)
$inlineOnly = false;
$excludeAttachments = false;
$searchSpec = '*/*';

$numParts = $email->GetNumPartsOfType($searchSpec,$inlineOnly,$excludeAttachments);
$i = 0;
while ($i < $numParts) {
    // What is the Content-Type of this MIME part?
    $sbContentType->Append($email->getNthContentType($i,$searchSpec,$inlineOnly,$excludeAttachments));
    if ($sbContentType->StartsWith('text/',$caseSensitive) == true) {
        // Get the text body of this MIME part.
        $textBody = $email->getNthTextPartOfType($i,$searchSpec,$inlineOnly,$excludeAttachments);
        print 'Got text body for ' . $sbContentType->getAsString() . "\n";
    }
    else {
        if ($sbContentType->ContentsEqual('message/rfc822',$caseSensitive) == true) {
            // If the Content-Type is message/rfc822, then the MIME body for this part contains a full embedded MIME messages.
            // Your application could load it into a Chilkat email object and recursively process...
            $attachedEmail = new CkEmail();
            $bdMime = new CkBinData();
            $email->GetNthBinaryPartOfTypeBd($i,$searchSpec,$inlineOnly,$excludeAttachments,$bdMime);
            $attachedEmail->SetFromMimeBd($bdMime);
            // Now your app can recursively process the attachedEmail...
        }
        else {
            // Get the bytes of this MIME body part.
            $bd = new CkBinData();
            $email->GetNthBinaryPartOfTypeBd($i,$searchSpec,$inlineOnly,$excludeAttachments,$bd);
            print 'Got binary body for ' . $sbContentType->getAsString() . ' numBytes = ' . $bd->get_NumBytes() . "\n";
        }

    }

    $sbContentType->Clear();
    $i = $i + 1;
}


?>