This API allows PHP developers to query and edit values of PDF form fields (also known as AcroForms).
All field types are accessable through an object orientated way: a form field is a simple PHP object.
To get access to the form fields you have to create an instance of the SetaPDF_FormFiller object by the factory()-method.
The SetaPDF_FormFiller-object offers you the method SetaPDF_FormFiller::getFields(), which will return all found form fields as an array of object references.
You can edit and/or query the values of the form fields by their specific method, which were described in this manual.
After you edited the values you can simply output or save the updated PDF form with the SetaPDF_FormFiller::fillForms()-method.