PHP Extension

Get the Nth Binary Part of a Content-Type into BinData

Demonstrates the Chilkat Email.GetNthBinaryPartOfTypeBd method, which loads the binary bytes of the Nth MIME sub-part matching a content-type pattern into a BinData object. The arguments are the zero-based index among the matching parts, the content-type pattern, an inlineOnly flag, an excludeAttachments flag, and the BinData that receives the bytes. This example extracts the first image/png part.

Background: This is the binary, type-targeted way to pull a specific part out of a message — ideal for extracting, say, every image/png or the one application/pdf from a complex MIME tree without caring whether it is an attachment, an inline image, or a body part. Reading into a BinData keeps the raw bytes exact, ready to save, hash, or re-transmit.

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<?php

include("chilkat.php");

$success = false;

//  Demonstrates the GetNthBinaryPartOfTypeBd method, which loads the binary bytes of the Nth
//  MIME sub-part matching a Content-Type pattern into a BinData object.  The arguments are
//  the zero-based index among matching parts, the Content-Type pattern, inlineOnly,
//  excludeAttachments, and the BinData that receives the bytes.

$email = new CkEmail();
$email->put_Subject('GetNthBinaryPartOfTypeBd example');
$email->put_Body('See the attached image.');

//  Load the image from a file into a BinData object and attach it (binary data belongs
//  in a BinData, never in a string).
$bdImage = new CkBinData();
$success = $bdImage->LoadFile('qa_data/images/photo.png');
if ($success == false) {
    print $bdImage->lastErrorText() . "\n";
    exit;
}

$success = $email->AddAttachmentBd('photo.png',$bdImage,'image/png');
if ($success == false) {
    print $email->lastErrorText() . "\n";
    exit;
}

//  Load the bytes of the first (index 0) image/png part into a BinData object.
$bd = new CkBinData();
$success = $email->GetNthBinaryPartOfTypeBd(0,'image/png',false,false,$bd);
if ($success == false) {
    print $email->lastErrorText() . "\n";
    exit;
}

print 'image/png part size (bytes) = ' . $bd->get_NumBytes() . "\n";

//  Note: The path "qa_data/images/photo.png" is a relative local filesystem path,
//  relative to the current working directory of the running application.

?>