datamatrix_ex6.php

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

    $data = 'This is a datamatrix symbol';

    $outputfile = 'dm_ex6.png';

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

    // Create the image backend (default)
    $backend = DatamatrixBackendFactory::Create($encoder);
    $backend->SetModuleWidth(5);
    $backend->SetQuietZone(10);

    // Set other than default colors (one, zero, background)
    $backend->SetColor('navy','white');

    // Create the barcode from the given data string and write to output file
    $dir = dirname(__FILE__);
    $file = '<span style="font-weight:bold;">"'.$dir.'/'.$outputfile.'"</span>';
    try {
        $backend->Stroke($data,$outputfile);
        echo 'Barcode sucessfully written to file: '.$file;
    } catch (Exception $e) {
        $errstr = $e->GetMessage();
        $errcode = $e->GetCode();
        echo "Failed writing file: ".$file.'<br>';
        echo "Datamatrix error ($errcode). Message: $errstr\n";
    }

    ?>