PHP ActiveX

Set the Charset of an Attachment

Demonstrates the Chilkat Email.SetAttachmentCharset method, which sets the charset parameter of the Content-Type header field for the attachment at a given zero-based index. This example adds a text attachment and sets its charset to utf-8.

Background: For a text attachment, the charset parameter tells the receiving client which character encoding the bytes use, so accented or non-Latin text renders correctly. Setting it explicitly (typically utf-8) removes ambiguity when the attachment contains non-ASCII content — without it, a client may guess wrong and display garbled characters.

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<?php

$success = 0;

//  Demonstrates the SetAttachmentCharset method, which sets the charset parameter of the
//  Content-Type header field for the attachment at the given zero-based index.

$email = new COM("Chilkat.Email");
$email->Subject = 'Set attachment charset';

$email->AddStringAttachment('notes.txt','Some notes.');

//  Set the charset of the first attachment (index 0) to utf-8.
$success = $email->SetAttachmentCharset(0,'utf-8');
if ($success == 0) {
    print $email->LastErrorText . "\n";
    exit;
}

//  The attachment's Content-Type now includes charset="utf-8".
print $email->getMime() . "\n";

?>