fdf_set_encoding Sets FDF character encoding boolfdf_set_encoding resourcefdf_document stringencoding fdf_set_encoding sets the character encoding in FDF document fdf_document. encoding should be the valid encoding name. Currently the following values are supported: "Shift-JIS", "UHC", "GBK","BigFive". An empty string resets the encoding to the default PDFDocEncoding/Unicode scheme.