Programming PHP

Example 10-13. Specifying a link (continued)
$im = pdf_open_jpeg($p, "php.jpg");
$x = pdf_get_value($p, "imagewidth", $im);
$y = pdf_get_value($p, "imageheight", $im);
pdf_begin_page($p,612,792);
pdf_place_image($p, $im, 50, 700, 1.0);
pdf_set_border_style($p, "solid", 0);
pdf_add_weblink($p,50,700,50+$x,700+$y,"http://www.php.net");
pdf_end_page($p);
pdf_close_image($p, $im);
pdf_close($p);
$buf = pdf_get_buffer($p);
$len = strlen($buf);
header("Content-Type: application/pdf");
header("Content-Length: $len");
header("Content-Disposition: inline; filename=link.pdf");
echo $buf;
pdf_delete($p);
?>
Other PDF Features
PDF documents support a variety of other features, such as annotations, attached
files, and page transitions. These features can also be manipulated with pdflib.
Note Annotations
Notes can be added on top of a PDF document using pdf_add_note( ):
pdf_add_note(pdf, llx, lly, urx, ury, contents, title, icon, open);
Specify the note area with two points: the lower-left corner (llx,lly) and upperright
corner (urx,ury). The contents parameter holds the text of the note (maximum
size 64 KB). The maximum size of the title is 255 characters. The icon parameter
indicates which icon should represent the note when it is closed (allowable values are
"comment", "insert", "note", "paragraph", "newparagraph", "key", and "help"). The
open parameter indicates whether the note should be open or closed by default.
Example 10-14 creates an open note on a page with the note icon.
Example 10-14. Creating an open note