qrexample01.php

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    <?php
    require_once ('jpgraph/QR/qrencoder.inc.php');

    // Data to be encoded
    $data = '01234567';

    // Create a new instance of the encoder and let the library
    // decide a suitable QR version and error level
    $encoder = new QREncoder();

    // Use the image backend
    $backend = QRCodeBackendFactory::Create($encoder, BACKEND_IMAGE);

    // Set the module size (quite big)
    $backend->SetModuleWidth(5);

    // .. send the barcode back to the browser for the data
    $backend->Stroke($data);
    ?>