(PECL ps >= 1.1.0)
ps_add_launchlink — Adds link which launches file
$psdoc
   , float $llx
   , float $lly
   , float $urx
   , float $ury
   , string $filename
   )Places a hyperlink at the given position pointing to a file program which is being started when clicked on. 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.
Примечание не будет отображаться при печати или просмотре документа, но будет показано при конвертировании документа в pdf с помощью Acrobat Distiller™ или Ghostview.
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 path of the program to be started, when the link is clicked on.
   Возвращает TRUE в случае успешного завершения  или FALSE в случае возникновения ошибки.