<?php

require_once "DhlRetoure.php";
require_once "Transaction.php";
$surname = $_POST["fname"];
$familyname = $_POST["lname"];
$street = $_POST["street"];
$streetNumber = $_POST["streetNr"];
$zip = $_POST["plz"];
$city = $_POST["city"];
$id = $_POST["id"];
// store information
if ($id > 0) {
    $t = new Transaction();
    $t->loadById($id);
    $t->fname = $surname;
    $t->lname = $familyname;
    $t->street = $street;
    $t->streetNr = $streetNumber;
    $t->plz = $zip;
    $t->city = $city;
    $t->save();
}
$dhlRetoure = new DhlRetoure();
$pdf = $dhlRetoure->getBase64Pdf($surname, $familyname, $street, $streetNumber, $zip, $city, $id);
if ($pdf) {
    //$dhlRetoure->displayPdf($pdf);$
    echo $pdf;
}
<?php

require_once "DhlRetoure.php";
require_once "Transaction.php";
$surname = $_GET["fname"];
$familyname = $_GET["lname"];
$street = $_GET["street"];
$streetNumber = $_GET["streetNr"];
$zip = $_GET["plz"];
$city = $_GET["city"];
$id = $_GET["id"];
// store information
if ($id > 0) {
    $t = new Transaction();
    $t->loadById($id);
    $t->fname = $surname;
    $t->lname = $familyname;
    $t->street = $street;
    $t->streetNr = $streetNumber;
    $t->plz = $zip;
    $t->city = $city;
    $t->save();
}
$dhlRetoure = new DhlRetoure();
$pdf = $dhlRetoure->getRetourePdf($surname, $familyname, $street, $streetNumber, $zip, $city, $id);
if ($pdf) {
    //$dhlRetoure->displayPdf($pdf);
    $dhlRetoure->displayBas64($pdf);
}