PHP条形码生成封装类

setScale(2); 
    $code->setThickness(30); // 条形码的厚度
    $code->setForegroundColor($color_black); // 条形码颜色
    $code->setBackgroundColor($color_white); // 空白间隙颜色
    $code->setFont($font); // 
    $code->parse('HELLO'); // 条形码需要的数据内容
} catch(Exception $exception) {
    $drawException = $exception;
}
  
//根据以上条件绘制条形码
$drawing = new BCGDrawing('', $color_white);
if($drawException) {
    $drawing->drawException($drawException);
} else {
    $drawing->setBarcode($code);
    $drawing->draw();
}
  
// 生成PNG格式的图片
header('Content-Type: image/png');
  
  
$drawing->finish(BCGDrawing::IMG_FORMAT_PNG);
?>