Could really do with some help. I am trying to put together a basic form (I am a complete newbie) where users go onto a webpage that I have made and enter their email address which is then checked against database to a) see if it has already been entered, in which case I will show a message and B) return a value from the database list at random (I want to populate a database column with around 30 values and when user enters their email it shows them a value from this list at random but is also unique, i.e. no one else can be given that value.
Can someone help? I don't know where to begin.
Really appreciate it!