fdf_set_flags
    (PHP 4 >= 4.0.2)
fdf_set_flags -- Sets a flag of a field
Description
bool 
fdf_set_flags ( int fdf_document, string fieldname, int whichFlags, int newFlags)
     The fdf_set_flags() sets certain flags
     of the given field fieldname.
    
     See also fdf_set_opt().