pdf_import/stamp_pages
Place a stamp on the pages of an existing PDF document.
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<?php
/*
* Stamp PDF pages:
* Import all pages from an existing PDF document and place a stamp somewhere
* on the page
*
* Required software: PDFlib+PDI/PPS 10
* Required data: PDF document
*/
/* This is where the data files are. Adjust as necessary. */
$searchpath = dirname(__FILE__,3)."/input";
/* By default annotations are also imported. In some cases this
* requires the Noto fonts for creating annotation appearance streams.
* We therefore set the searchpath to also point to the font directory.
*/
$fontpath = dirname(__FILE__,3)."/resource/font";
$outfile = "";
$title = "Stamp Pages";
$pdffile = "PDFlib-real-world.pdf";
try {
$p = new pdflib();
$p->set_option("searchpath={" . $searchpath . "}");
$p->set_option("searchpath={" . $fontpath . "}");
/* This means we must check return values of load_font() etc. */
$p->set_option("errorpolicy=return");
if ($p->begin_document($outfile, "") == 0)
throw new Exception("Error: " . $p->get_errmsg());
$p->set_info("Creator", "PDFlib Cookbook");
$p->set_info("Title", $title );
/* Open the input PDF */
$indoc = $p->open_pdi_document($pdffile, "");
if ($indoc == 0)
throw new Exception("Error: " . $p->get_errmsg());
$endpage = (int) $p->pcos_get_number($indoc, "length:pages");
/* Loop over all pages of the input document */
for ($pageno = 1; $pageno <= $endpage; $pageno++)
{
$page = $p->open_pdi_page($indoc, $pageno, "");
if ($page == 0)
throw new Exception("Error: " . $p->get_errmsg());
/* Page size may be adjusted by fit_pdi_page() */
$p->begin_page_ext(0, 0, "width=a4.width height=a4.height");
/* Place the imported page on the output page, and
* adjust the page size
*/
$p->fit_pdi_page($page, 0, 0, "adjustpage");
/* Fit the text line like a stamp with red outlines in the
* specified box. The stamp will be placed diagonally from the
* upper left to the lower right.
*/
$p->fit_textline("PRELIMINARY", 50, 50,
"fontname=NotoSerif-Bold " .
"fontsize=1 textrendering=1 boxsize={500 700} stamp=ul2lr " .
"strokecolor=red strokewidth=2");
$p->close_pdi_page($page);
$p->end_page_ext("");
}
$p->end_document("");
$buf = $p->get_buffer();
$len = strlen($buf);
header("Content-type: application/pdf");
header("Content-Length: $len");
header("Content-Disposition: inline; filename=stamp_pages.pdf");
print $buf;
}
catch (PDFlibException $e) {
echo("PDFlib exception occurred in stamp_pages sample:\n" .
"[" . $e->get_errnum() . "] " . $e->get_apiname() . ": " .
$e->get_errmsg() . "\n");
exit(1);
}
catch (Throwable $e) {
echo($e);
exit(1);
}
$p = 0;
?>