Server modify header problem

[matsinger]

Who can help me ?

Om my local server (apache - wamp server) and on my own homepage server.(http://martijn-krista.nl/test/citta/) .. the php script I wrote works correctly.

But on the server where I test the new site (I am creating) (http://kamerkoorcittaverde.nl/test/) , I get the following warnnings:

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /storage/mijndomein/users/094777/public/sites/www.kamerkoorcittaverde.nl/test/index.php:1) in /storage/mijndomein/users/094777/public/sites/www.kamerkoorcittaverde.nl/test/index.php on line 7

Warning: Cannot modify header information - headers already sent by (output started at /storage/mijndomein/users/094777/public/sites/www.kamerkoorcittaverde.nl/test/index.php:1) in /storage/mijndomein/users/094777/public/sites/www.kamerkoorcittaverde.nl/test/index.php on line 27

I only use the functions session_name("cittaverde");
and session_start(); at the very fist lines of the index.php
just after <PHP
at the top of the file.

what send already headers ? and why can't I use session_start(); and
setcookie(); function ?

Who can help me out ?

[Smackie]

I remember when I was getting Warning: Cannot modify header information - headers already sent by i usually switched session_start(); with ob_Start() so that might help you with that part.. not sure on the other parts

[katsurace]

may be ur session_start() function is not yet top of file or u have a echoed something before
header() function so either u write ob_start() at begining of ur page or add @ in front of header() like @header("lcation:somewhere.php")

may be this can be a solution

[bretticus]

Often just having blank lines or spaces before your opening php tag can cause this issue.