pdf_add_pdflink
Description
bool pdf_add_pdflink ( resource pdfdoc, float bottom_left_x, float bottom_left_y, float up_right_x, float up_right_y, string filename, int page, string dest)Add a file link annotation (to a PDF target). Returns TRUE on success or FALSE on failure.
See also pdf_add_locallink() and pdf_add_weblink().