I have one table with user information contain unique ID and password. When user enters the ID and password in php login form, my php code should check that ID is already present or not. If it is present, my php code should check that the password is same as password for that ID in database. If it is same then "welcome.php" page should be open or "Invalid user ID or password " msg should be display.
It is my live project, so please reply as soon as possible.