qr_template.php

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

    // Data to be encoded
    $data         = 'ABCDEFGH01234567';

    // QR Code specification
    $version      = -1;                  // -1 = Let the library decide version (same as default)
    $corrlevel    = QRCapacity::ErrM;   // Medium erro correction
    $modulewidth  = 2;                    // Module width
    $back         = BACKEND_IMAGE;        // Default backend
    $quiet          = 4;                     // Same as default value

    // Create encoder and backend
    $encoder = new QREncoder($version, $corrlevel);
    $backend = QRCodeBackendFactory::Create($encoder, $back);

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

    // Set Quiet zone (this should rarely need changing from the default)
    $backend->SetQuietZone($quiet);

    if( $back == BACKEND_IMAGE ) {

        $backend->Stroke($data);
    }
    else {
        $str = $backend->Stroke($data);
        echo '<pre>'.$str.'</pre>';
    }
    ?>