thinkPHP框架实现生成条形码的方法

//生成条形码

public function barcode(){

  import('@.ORG.Util.barcode.BCGFontFile');//字体类

  import('@.ORG.Util.barcode.BCGColor');//字体颜色类

  import('@.ORG.Util.barcode.BCGDrawing');

  import('@.ORG.Util.barcode.BCGcode39');

  $text = $_GET['text'];

  $texts = isset($text)?$text:'00000000000';

  $color_black = new \BCGColor(0,0,0);

  $color_white = new \BCGColor(255,255,255);

  $drawException = null;

  try {

    $code = new \BCGcode39();

    $code->setScale(2);

    $code->setThickness(30);

    $code->setForegroundColor($color_black);

    $code->setBackgroundColor($color_white);

    $code->parse($texts);

  } catch(Exception $exception) {

    $drawException = $exception;

  }

  $drawing = new \BCGDrawing('', $color_white);

  if($drawException) {

    $drawing->drawException($drawException);

  } else {

    $drawing->setBarcode($code);

    $drawing->draw();

  }

  header('Content-Type: image/png');

  header('Content-Disposition: inline; filename="barcode.png"');

  $drawing->finish(\BCGDrawing::IMG_FORMAT_PNG);

}

<img src="{:U('ContractCommonApply/barcode')}/text/{$res[0]['ContractCode']}" alt="">