yii框架 生成二维码

二维码 生成

composer require "2amigos/qrcode-library"

public function actionQrcode(){
    $request = \Yii::$app->request;
    $url = $request->post('url');
    $qrCode = (new QrCode($url))
        ->setSize(255);
    $qrCode->writeFile( './uploads/code.png');
    header('Content-Type: '.$qrCode->getContentType());
    echo $qrCode->writeString();
    exit();
}