(PECL ps >= 1.1.0)
ps_add_pdflink — Adds link to a page in a second pdf document
$psdoc,$llx,$lly,$urx,$ury,$filename,$page,$destPlaces a hyperlink at the given position pointing to a second pdf document. Clicking on the link will branch to the document at the given page. The first page in a document has number 1.
The hyperlink's source position is a rectangle with its lower left corner at
(llx, lly) and its upper
right corner at (urx, ury).
The rectangle has by default a thin blue border.
此说明在文档被打印或显示时不可见，只在文档用 Acrobat Distiller 或 Ghostview 转换成 PDF 时显示。
psdocResource identifier of the postscript file as returned by ps_new().
llxThe x-coordinate of the lower left corner.
llyThe y-coordinate of the lower left corner.
urxThe x-coordinate of the upper right corner.
uryThe y-coordinate of the upper right corner.
filenameThe name of the pdf document to be opened when clicking on this link.
pageThe page number of the destination pdf document
dest
The parameter dest determines how the document
is being viewed. It can be fitpage,
fitwidth, fitheight, or
fitbbox.