interchange/embed_xmp
Embed custom XMP metadata in a document.
Download PHP Code Switch to Java Code Show Output Show Input (simple.xmp)
<?php
/*
* Embed XMP:
* Embed custom XMP metadata in a document
*
* Use the "metadata" option of begin_document() to read XMP metadata from an
* XMP file and embed it in the output document.
*
* Required software: PDFlib/PDFlib+PDI/PPS 10
* Required data: XMP file
*/
/* This is where the data files are. Adjust as necessary. */
$searchpath = dirname(__FILE__,3)."/input";
$outfile = "";
$title = "Embed XMP";
$xmpfile = "simple.xmp";
try {
$p = new PDFlib();
$p->set_option("searchpath={" . $searchpath . "}");
/* This means we must check return values of load_font() etc. */
$p->set_option("errorpolicy=return");
/* Start the document with an XMP file supplied, containing a few
* commonly used XMP properties. The XMP metadata will be read from the
* file and embedded in the document. PDFlib will merge several
* internally generated entries into the user-supplied XMP, e.g.
* xmp:CreateDate.
*/
if ($p->begin_document($outfile,
"metadata={filename=" . $xmpfile . "}") == 0)
throw new Exception("Error: " . $p->get_errmsg());
$p->set_info("Creator", "PDFlib Cookbook");
$p->set_info("Title", $title);
/* Start page */
$p->begin_page_ext(0, 0, "width=a4.width height=a4.height");
$p->fit_textline("XMP metadata is read from an XMP file and embedded " .
"in the document.", 20, 600,
"fontname=NotoSerif-Regular fontsize=12");
$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=embed_xmp.pdf");
print $buf;
}
catch (PDFlibException $e) {
echo("PDFlib exception occurred:\n" .
"[" . $e->get_errnum() . "] " . $e->get_apiname() . ": " .
$e->get_errmsg() . "\n");
exit(1);
}
catch (Throwable $e) {
echo("PHP exception occurred: " . $e->getMessage() . "\n");
}
$p = 0;
?>