Setting the MIME Text Charset (such as utf-8, iso-8859-1, etc.)

Demonstrates how setting the Charset property controls the character encoding used for the text body in a MIME message.

Download Chilkat MIME ActiveX

<?php

$mime = new COM("Chilkat.Mime");

$success = $mime->UnlockComponent('Anything for 30-day trial.');
if ($success == false) {
    print $mime->lastErrorText() . "\n";
    exit;
}

//  Set the MIME body using some 8bit non-us-ascii characters:
$mime->SetBody('á, é, í, ó, ú');

//  Set the Content-Type
$mime->ContentType = 'text/plain';

//  Set the Content-Transfer-Encoding to "quoted-printable"
//  so it's easy to see the bytes used to encode each character
//  (i.e. it will be easy to see that utf-8 uses 2-bytes for
//  non-us-ascii characters such as "á", whereas a character
//  encoding such as iso-8859-1 will use one byte per character.
$mime->Encoding = 'quoted-printable';

//  Set the Charset to utf-8
$mime->Charset = 'utf-8';

//  Examine the MIME:
print $mime->getMime() . "\n";

//  The MIME should look like this:
//  
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain; charset="utf-8"

=C3=A1, =C3=A9, =C3=AD, =C3=B3, =C3=BA

//  Now change the Charset to "iso-8859-1"
$mime->Charset = 'iso-8859-1';

//  Get the MIME again...
print $mime->getMime() . "\n";

//  Now the MIME should look like this:
//  
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain; charset="iso-8859-1"

=E1, =E9, =ED, =F3, =FA


?>