(PECL ps >= 1.1.0)
ps_add_bookmark — Add bookmark to current page
$psdoc
, string $text
[, int $parent = 0
[, int $open = 0
]] ) : intAdds a bookmark for the current page. Bookmarks usually appear in PDF-Viewers left of the page in a hierarchical tree. Clicking on a bookmark will jump to the given page.
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().
textThe text used for displaying the bookmark.
parentA bookmark previously created by this function which is used as the parent of the new bookmark.
open
If open is unequal to zero the bookmark will
be shown open by the pdf viewer.
The returned value is a reference for the bookmark. It is only used if the bookmark shall be used as a parent. The value is greater zero if the function succeeds. In case of an error zero will be returned.