pdf_import/stamp_pages

<?php

/* $Id: stamp_pages.php,v 1.6 2013/03/26 14:46:04 stm Exp $

 * Stamp PDF pages:

 * Import all pages from an existing PDF document and place a stamp somewhere

 * on the page

 *

 * Required software: PDFlib+PDI/PPS 9

 * Required data: PDF document

 */

/* This is where the data files are. Adjust as necessary. */

$searchpath = dirname(dirname(dirname(__FILE__)))."/input";

$outfile = "";

$title = "Stamp Pages";

$pdffile = "PDFlib-real-world.pdf";

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");

    $p->set_option("stringformat=utf8");

    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());

        /* Dummy page size; will be adjusted later */

        $p->begin_page_ext(10, 10, "");

        /* Place the imported page on the output page, and

         * adjust the page size

         */

        $p->fit_pdi_page($page, 0, 0, "adjustpage");

        $font = $p->load_font("Helvetica-Bold", "unicode", "");

        if ($font == 0)

            throw new Exception("Error: " . $p->get_errmsg());

        /* 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, "font=" . $font .

           " 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) {

    die("PDFlib exception occurred in stamp_pages sample:\n" .

        "[" . $e->get_errnum() . "] " . $e->get_apiname() . ": " .

        $e->get_errmsg() . "\n");

}

catch (Exception $e) {

    die($e);

}

$p = 0;

?>