I had a website which uses a login page for registered users. It uses the $_SESSION variable for string the current session values after a user succesfully logins. This was working fine, but on a sudden it stopped working. When the user submit login info, it doesnt give an invalid user message or any other warnings ,but return back to login page. Some of you guys ,might have gone through the above mentioned scenario while developing / managing your website. The possible reasons are mentioned below.
