Don't allow duplicate entries on prepopulated fields

I’m trying to more or less compare an array of custom fields to entries in gravity forms in a certain field, then not allow the duplicates to display at all. I’m just not sure how to get a certain array of fields from gravity forms to actually compare them.

Welcome to the new community forums!

Can you explain a little more in depth what you’re doing currently, and when you need to compare the custom fields to Gravity Forms entries? Can you give us the whole scenario, and even include screenshots or code if it will help explain? Thank you.