I have developed a website on my laptop using php5 and recently moved it to a hosted environment. I now keep getting loads of errors around session handling such as "Cannot send session cache limiter - headers already sent". I corrected a few by removing spaces from the bottom of php scripts after the ?> php end command however they are everywhere and i never got any issues like this on my laptop. Both the laptop and the shared hosting environment are php5 but probably different versions. Any idea why this wasnt a problem on my laptop can I suppress this errors or something?