Check for Collection
Checks whether a PDF document is a Collection (aka PDF Portfolio or PDF Package).
PHP
<?php // load and register the autoload function require_once '../../../../../bootstrap.php'; // prepare some files $files = [ $assetsDirectory . '/pdfs/tektown/products/All.pdf', $assetsDirectory . '/pdfs/tektown/products/All-Collection.pdf', $assetsDirectory . '/pdfs/tektown/products/All-Portfolio.pdf', ]; $path = displayFiles($files); // create a document $document = \SetaPDF_Core_Document::loadByFilename($path); $catalog = $document->getCatalog(); $dictionary = $catalog->getDictionary(); if ($dictionary && $dictionary->offsetExists('Collection')) { echo 'This document IS a portable collection.'; } else { echo 'This document is NOT a portable collection.'; }