I think I need to give a better example.  While the fix in CVS does fix the example from the man page, I am having trouble when the envelope includes custom_headers.

If you add the following line to the example script in the man page, you should notice that the other headers are missing.  I tested this with a 20050104 CVS snapshot.

$envelope["custom_headers"] = array("X-Mailer: TestMailer");

Thank you for the earlier fix.  It did help.

And also found another crash bug:

<?php
$envelope["from"]= "joe@example.com";
$envelope["to"]  = "foo@example.com";
$part1["type"] = TYPEMULTIPART;
$body[] = $part1;
echo imap_mail_compose($envelope, $body);
?>

#0  0x082ec3af in rfc822_encode_body_7bit ()
#1  0x081275fe in zif_imap_mail_compose (ht=2, return_value=0x86763a4, this_ptr=0x0, 
    return_value_used=1) at /usr/src/web/php/php_4_3/ext/imap/php_imap.c:3081

Test script for the missing headers with custom_headers:

<?php

$envelope["from"]= "joe@example.com";
$envelope["to"]  = "foo@example.com";
$envelope["cc"]  = "bar@example.com";
$envelope["custom_headers"] = array("X-Mailer: TestMailer");

$part["type"] = TYPETEXT;
$part["subtype"] = "plain";
$part["description"] = "description";
$part["contents.data"] = "contents.data";

echo imap_mail_compose($envelope, array($part));

?>

This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.