fdf_header(3) php man page | unix.com

FDF_HEADER(3)								 1							     FDF_HEADER(3)

fdf_header - Sets FDF-specific output headers

SYNOPSIS
       void fdf_header (void  )

DESCRIPTION
	This is a convenience function to set appropriate HTTP headers for FDF output. It sets the Content-type: to application/vnd.fdf.

RETURN VALUES
	No value is returned.

PHP Documentation Group 													     FDF_HEADER(3)