Hi guys,
Im doing a webite which asks for the user to enter their name, email address, age and location.
What is the best way of making sure, that new entries are not the same as older ones... and they are not entered into the mysql db? (every user has to have a unique email address at the very least)
Also is How can I make sure the string entered for an email address is vaild.........
any help will be as ever appreicated......