> That's what I had been doing, but I realized that this method left me 
> vulnerable to tampering,
> since keywords in the field name are sent to the user. The keywords could be 
> changed,
> thus bypassing the validation.

Why not just validate the values you receive against the constraints
of your database field types? What difference does it make whether a
value comes from an HTML INPUT vs some other field type?

Dave Watts, CTO, Fig Leaf Software
http://www.figleaf.com/

Fig Leaf Software provides the highest caliber vendor-authorized
instruction at our training centers in Washington DC, Atlanta,
Chicago, Baltimore, Northern Virginia, or on-site at your location.
Visit http://training.figleaf.com/ for more information!

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