what kind of a function can I use that will tell me whether a variable is alphanumeric (that is has only characters A-Z or 1-9 )?
Something like this should work. (untested)
preg_match ( "/^([a-z]||[A-Z]||[0-9])+$/", $string )
-- John C. Nichel ÜberGeek KegWorks.com 716.856.9675 john@xxxxxxxxxxxx
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