arvind

But if i placed it on top following errors occurs on any event Fatal error: main() [function.main]: The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition <b>unknown</b> of the object you are trying to operate on was loaded _before_ the session was started in /opt/lampp/htdocs/index.php on line 155

Hi all i'm working on php and facing a session problem on my project. this is running fine on windows but when i configured it on linux it is showing following warnings Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /opt/lampp/htdocs/classes/database/mysql.inc.php:171) in /opt/lampp/htdocs/index.php on line 60 Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /opt/lampp/htdocs/classes/database/mysql.inc.php:171) in /opt/lampp/htdocs/index.php there is no echo statement before session_start() and  not a problem with whitespaces. b,coz it is running fine on windows. if u hav any idea about to solve this problem plz help me out. Thanks in advance Arvind