<?php
if (count ( $_REQUEST ['mass'] )) {
    require_once('modules/EcmSales/createPDF.php');
    $files = [];
    foreach ($_REQUEST['mass'] as &$id) {
        $files [] = createEcmSalePdf ( $id, 'FILE', '1' );
    }
	include 'PDFMerger.php';
	if (count ( $files ) > 0) {
		$pdf = new PDFMerger ();
		foreach ( $files as $file ) {
			$pdf->addPDF ( $file );
		}
		try {
			$pdf->merge ( "file", 'zs.pdf' );
		} catch ( Exception $e ) {
		}
		header ( "Location: zs.pdf" );
	}
}