--TEST-- Bug #52681 (mb_send_mail() appends an extra MIME-Version header) --SKIPIF-- <?php if (substr(PHP_OS, 0, 3) == 'WIN') { die('skip.. Not valid for Windows'); } if (!function_exists("mb_send_mail") || !mb_language("neutral")) { die("skip mb_send_mail() not available"); } ?> --INI-- sendmail_path=/bin/cat mail.add_x_header=off --FILE-- <?php $to = 'example@example.com'; $headers = 'MIME-Version: 2.0'; mb_send_mail($to, mb_language(), "test", $headers); ?> --EXPECTF-- To: example@example.com Subject: %s MIME-Version: 2.0 Content-Type: text/plain; charset=%s Content-Transfer-Encoding: %s %s