Checking If A Value Is Not In An Array And Deleting Record From Database
I have been trying to figure this one out and have come up against a brick wall although I know it should be relatively simple. I have a form that passes an array to a php script from a multiple select box that is created dynamically. If a user deselects an item then I want to delete the record from the database but am having a big problem with it. The table in the dbase is quite simple with just three fields:
id
classid
formid
Basically, the form send through a classid and a formid value and I want to delete any records that have a classid that are not in the form array and have a formid which is passed as a hidden value. I suppose really what I want is to know how to see if a classid is not in the array that is passed.
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