In dynamic forms where fields can be added or removed by the user, the server-side processing in PHP should use the ________ function to ensure data integrity.
- 'isset()'
- 'array_push()'
- 'count()'
- 'filter_var()'
The correct option is 'count().' In dynamic forms, where the number of fields can change, using 'count()' helps ensure data integrity by determining how many fields have been submitted and handling them appropriately. This is important for server-side validation.
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