PHP Extension

Set a Preferred Charset for an Email

Demonstrates the Chilkat Email.PreferredCharset property. It applies only when building an email with non-English characters where the charset has not been explicitly set. Chilkat normally auto-selects a default charset per language (Chinese gb2312, Japanese shift_JIS, Korean ks_c_5601-1987, Thai windows-874, others iso-8859-*), and this property lets you steer that choice — for example choosing iso-2022-jp for Japanese. It is a preference, not a forced conversion: if the preferred charset cannot represent the text, it is ignored. This example sets a preferred charset.

Background: A single language often has several legacy charsets — Japanese, for instance, can be encoded as shift_JIS, euc-jp, or iso-2022-jp. Some mail environments expect one particular encoding, so PreferredCharset lets you nudge Chilkat toward it. Contrast this with the Charset property, which forces a specific charset: PreferredCharset is only a hint that Chilkat honors when it fits.

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<?php

include("chilkat.php");

//  Demonstrates the Email.PreferredCharset property.  It only applies when building an
//  email that contains non-English characters and no charset is explicitly set.  Chilkat
//  will prefer this charset if it can represent the email's text; otherwise it is ignored.

$email = new CkEmail();
$email->put_Subject('Preferred charset example');
$email->put_Body('Japanese text would go here.');

//  Prefer iso-2022-jp instead of the default shift_JIS for Japanese text.
$email->put_PreferredCharset('iso-2022-jp');

print 'PreferredCharset = ' . $email->preferredCharset() . "\n";

?>