Description:
------------
Note: This also happens with PHP 5.0.5.

mb_send_mail() does not fetch and/or use the mail.force_extra_parameters from httpd.conf, despite the documentation stating that it is a wrapper around mail() (which does fetch and use those extra parameters):

/../ "mb_send_mail() is wrapper function of mail(). See mail() for details." /../


Reproduce code:
---------------
<?php
  $from = 'my@address.com';
  $to = 'my@address.com';
  $subject = 'Hi!';
  $body = 'Hi,\n\nHow are you?';
  mb_language("uni");
  $status = mb_send_mail($to, $subject, $body);
?>

Corresponding httpd.conf entry:

  php_admin_value mail.force_extra_parameters "-t -f webmaster@mysite.com"


Expected result:
----------------
That the mail.force_extra_parameters are automatically used.

Actual result:
--------------
The mail.force_extra_parameters are not used. This may cause problems with the sendmail program if it expects those parameters.

One has to fetch the parameters with ini_get('mail.force_extra_parameters') and feed it to mb_send_mail() like this:

  $status = mb_send_mail($to, $subject, $body, '', ini_get('mail.force_extra_parameters'));