note 34156 added to features.http-auth

I tried to use the HTTP authentication example ( at top); copy-paste the simple (firtst) example to my php code. After it, I checked it in my browser, the result was: Warning: Cannot add header information - headers already sent by (output started at /var/www/index.php:2) in /var/www/index.php on line 4 Warning: Cannot add header information - headers already sent by (output started at /var/www/index.php:2) in /var/www/index.php on line 5 Why??? I deleted all other code from my script, so I tried to use only the example. The result is same... Can anyone help me? (SFBE :-) ---- Manual Page -- http://www.php.net/manual/en/features.http-auth.php Edit Note -- http://master.php.net/manage/user-notes.php?action=edit+34156 Delete Note -- http://master.php.net/manage/user-notes.php?action=delete+34156&report=yes Reject Note -- http://master.php.net/manage/user-notes.php?action=reject+34156&report=yes