[PHP] Using a reentrant form

[Todd Cary]

To validate a page, I set the form value to the page name the 
user is on.  Then there is a hidden variable, "looped" that is 
set to "1".  By checking "looped", I know if the user has 
re-entered the form so I can do my validation checks.

Is there a disadvantage to this approach?
Thank you...

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