generate qr code with bacon/bacon-qr-code not working

I tried using your sample code on both an existing image and a non-existing image . Both case failed , and no image is generated on the latter.

first trial:

$renderer = new \BaconQrCode\Renderer\Image\Png();
$renderer->setHeight(256);
$renderer->setWidth(256);
$writer = new \BaconQrCode\Writer($renderer);
$writer->writeFile('Hello World!', 'qrcode.png');

i then thought i could just write string instead of writing into a file but when i echo i still don't get image

2nd trial :

         $renderer = new \BaconQrCode\Renderer\Image\Png();

        $renderer->setHeight(256);

        $renderer->setWidth(256);

        $writer = new \BaconQrCode\Writer($renderer);

        $str= $writer->writeString('Hello World!');
       header('Content-Type:image/png');
      echo $str;`

i get the code below

�PNG IHDR�?1IDATx��n�0A'��kP!��؝9��~��' �4�&�@�Hi M� �4�&�@�Hi M� �4�&�@�Hi M� �4�&�@�Hi M� �4�&�@�Hi M� �4��x�^��3:|��u�+W�_u?O��9�p�'��4�&�@�Hi#�W�Z'^��?m=��|�Hi M� �4�6zpeպ�u�U�럾N?��<Hi M� �4�&Ҏ��@�'i M� �4�&�@�9�F�� <Hi M� �4�&Ҏ�L[/�v?w�~�?� @�Hi M� �4�6z0�|�?�>�~A�|��!M� �4�&�@�H�*��}�� M� �4�&�@�H��S_��w'�� @�Hi M� �4�6b��u��Ͽ�I�&�@�Hi M��~��u�Lx�<�^��i M� �4�&�F�V�ǯz��ʴu��s�Us��Y�Q�0�&�@�Hi m�9��U��w�|J� �4�&�@�H18�)�ﾾs��0 M� �4�&�@ڈ9��v��G�>E��̓M@�Hi M� ��\��<��'i M� �4�&�@��9��=��)� �'i M� �4�&�@ڑs�iv��?��?�'i M� �4�&�@�9�FO�{�j>P�3x�&�@�Hi M�98e�yչ��_�sw��>��4�&�@�Hi m��kv��OX��F�Hi M� �4��5y�v� M� �4�&�@�Hi M� �4�&�@�Hi M� �4�&�@�Hi M� �4�&�@�Hi M� �4�&�@�Hi M� ��mF�sE�}IEND�B�

What's the problem ?

any help ?

Solution

I finally decided to use the package simpleqr-code . link here :https://www.simplesoftware.io/docs/simple-qrcode