qrexample10.php

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    <?php // content="text/plain; charset=utf-8"
        // Example 10 : Specified error correction level

        // Include the library
        require_once('jpgraph/QR/qrencoder.inc.php');

        $data      = 'ABCDEFGH01234567'; // Data to be encoded
        $version   = -1;  // -1 = Let the library decide version (same as default)
        $corrlevel = QRCapacity::ErrH; // Error correction level H (Highest possible)

        // Create a new instance of the encoder using the specified
        // QR version and error correction
        $encoder = new QREncoder($version,$corrlevel);

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

        // Set the module size
        $backend->SetModuleWidth(3);

        // Set color
        $backend->SetColor('brown','white');

        // Store the barcode in the specifed file
        $backend->Stroke($data);
    ?>