yii2 使用barcode生成

使用前安装依赖

composer require picqer/php-barcode-generator

使用

 $generator = new BarcodeGeneratorJPG();
 $barcode = $generator->getBarcode('21212', $generator::TYPE_CODE_128, 2, 110);
 $barcode = 'data:image/jpg;base64,' . base64_encode($barcode);