Might go back into...

[Blob]

simonwilldie("Tommorow");

No soz.

Edit: For no infraction, ontopic:

If you cant use SQL, just use protection on flat files

[Mr Macro]

Ok, first thing is.I'm not doing a user system.I'm making a advertisement system.

[Luckyrare]

Flat file systems can be secure but mysql is easier to code.

[redtom]

An advertising system is not really that hard, enter info into database then make it randomly appear.