I am working on a PHP page which can be reached through logging in another index page. This PHP page then starts a session and it displays data from MySQL onto a table.

I am trying to add a filter dropdown box, which can query certain data form table depending on the item selected. This requires the page to get refreshed and come up with certain data from the table.

But once I select an option, the PHP page goes white and nothing comes up. But when I goto this page straightaway without logging in, and by commenting out the session commands like "session_start()" and all, the page can display the data based upon the selection in the dropdown box.

So can anyone tell me how to stop this issue, or if you think there is something wrong with the way I found out the cause of the issue, then please notify that as well. Please let me know if you need more details.