note 56457 added to function.header

i have big question if my php file type is utf-8 and use header function it can't redirection to other address Warning: Cannot modify header information - headers already sent by (output started at /usr/local/psa/home/vhosts/jain.topfong.com/httpdocs/test.php:1) in /usr/local/psa/home/vhosts/jain.topfong.com/httpdocs/test.php on line 2 but i never use any echo or output any html type tag who can tell me how to solve this big question ---- Manual Page -- http://www.php.net/manual/en/function.header.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+56457 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+56457&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+56457&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+56457&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+56457&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+56457&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+56457&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+56457&report=yes Search -- http://master.php.net/manage/user-notes.php