pop-up multiselection array and where condition

Hi,
I've to perform a where condition which includes the output from a
multiselectio pop-up: ie user can choose one or more item from a pop-up
munu, let's say (item1,item3,item10), then I want to send this set of values
as an array or table via php to a query that should have as where condition
some like that:

select * from table1 where field1 is in (array{item1,item3,item10})

is there a stright way to do that ?

thanks in advance and best regards

Giu

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