datamatrix_ex7.php

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

    $data = 'A Datamatrix barcode';

    // Create and set parameters for the encoder
    $encoder = DatamatrixFactory::Create();
    $encoder->SetEncoding(ENCODING_BASE256);

    // Create the image backend (default)
    $backend = DatamatrixBackendFactory::Create($encoder, BACKEND_ASCII);
    $backend->SetModuleWidth(3);

    try {
        $ps_txt = $backend->Stroke($data);
        echo '<pre>'.$ps_txt.'</pre>';
    } catch (Exception $e) {
        $errstr = $e->GetMessage();
        echo "Datamatrix error message: $errstr\n";
    }

    ?>