note 28931 added to function.header

Is there any way by which I check whether my header() call was successful or not? // ... $rc = header('Content-Type: text/plain'); var_dump($rc); // outputs NULL! Inspite of having the return value as int, the header() function always returns NULL. Why? -- http://www.php.net/manual/en/function.header.php http://master.php.net/manage/user-notes.php?action=edit+28931 http://master.php.net/manage/user-notes.php?action=delete+28931 http://master.php.net/manage/user-notes.php?action=reject+28931