PHP- Show if table have data

Hi.

I have a PHP question

I have a form , only users can see this form, when user logged in.
(user have own session_id - stored in user_ID), can see form.

After form filled and submitted to MySQL , session_ID passed via hidden field to table (form table)

form table structure;
data_ID - user_ID (session data) data_NAME - data_SURNAME etc

My question ise, if user submitted form , user must see another form
(editable form) for first submitted form

This way user can edit first submitted data's, i think this can be done with if statement's, but i cannot to id. any idea's

Thanks

 

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