bool fdf_set_value ( resource fdf_document, string fieldname, mixed value [, int isName] )
The fdf_set_value() function sets the
value for a field named fieldname.
The value will be stored as a string unless it is an array.
In this case all array elements will be stored as a value array.
Note:
In older versions of the fdf toolkit last parameter determined if the field value
was to be converted to a PDF Name (isName = 1)
or set to a PDF String (isName = 0). The value is no
longer used in the current toolkit version 5.0. For compatibility reasons it is
still supported as an optional parameter beginning with PHP 4.3, but ignored internally.