Merge PDF Files using PDFfiller PHP Client

With PDFfiller, merging PDFs has become easier. Combine the pages from different PDF documents to create a new document while preserving all sensitive information. The process is easy, simply select the pages and click the respective button.
          
              
                    PDFfiller\OAuth2\Client\Provider\Tools\Merge::save();
$mergeEntity = new Merge($provider);
$mergeEntity->documents = [20829426, 20820426, 20829429];
$result = $mergeEntity->save();