SetaPDF-Core Manual

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<?php

use setasign\SetaPDF2\Core\Document;
use setasign\SetaPDF2\Core\Document\Page\Annotation\FileAttachmentAnnotation;
use setasign\SetaPDF2\Core\FileSpecification;
use setasign\SetaPDF2\Core\PageFormats;
use setasign\SetaPDF2\Core\Writer\HttpWriter;

require_once('library/SetaPDF/Autoload.php');

$writer = new HttpWriter('file-attachment-annotation.pdf', true);
$document = new Document($writer);

// let's create a page
$pages = $document->getCatalog()->getPages();
$page = $pages->create(PageFormats::A4);

$annotations = $page->getAnnotations();

// create an embedded file specification
$fs = FileSpecification::createEmbedded(
    $document, 'files/pdfs/tektown/Logo.pdf', 'Logo.pdf'
);
// create the file attachment annotation
$annotation = new FileAttachmentAnnotation(
    [50, 550, 70, 590], $fs
);
// set the icon name
$annotation->setIconName(FileAttachmentAnnotation::ICON_PAPERCLIP);

// set the color to blue
$annotation->setColor([0, 0, 1]);

// add the annotation to the page
$annotations->add($annotation);

$document->save()->finish();