Accepted Parameters: Array of arguments. See below.
Returns: An array of submissions on success, an empty array if no results found.
This function is used to get submission data from the database.
It accepts the following arguments:
- form_id => ID of the form you want submissions from
- user_id => ID of the user you want submissions from
- field_id => User value that the field ID must be equal to
- begin_date => Earliest date for submissions
- end_date => last date for submissions
- limit => only return X submissions