Matthew Setter is a PHP Editor in the Twilio Voices team and a polyglot developer. I highly recommend using them in your applications, as and where they make sense.Īre you considering using QR codes in your application after reading this tutorial? If so, if so I'd love to see what you build. Packages like chillerlan/php-qrcode or one of the others available on Packagist can help you generate QR codes, with or without branding, in your applications. It's quite interesting seeing the differences in how the QR code renders. NOTE: If you want to change the QR code's matrix, experiment with setting maskPattern to either a value from 1 to 7, or QRCode::MASK_PATTERN_AUTO when initializing LogoOptions.

To do that, reload in your browser, and you should see it rendered similarly to the screenshot below. With the code and image in place, let's generate the new version of the QR code and see what it looks like. If you choose to use a different image, make sure that you save the image in public/img and pass the image's path as the second argument to $qrOutputInterface->dump(). To download it, first open it in Twilio's Library, then click the ' Actual size_PNG' link on the lower right-hand side of the page. For the purposes of this article, I'm using Twilio's logo. The last thing we need to do before testing the changes is to choose the image that we're going to overlay on the QR code. The code finishes up by calling $qrOutputInterface's dump method to overlay the image over the QR code and return a Base64-encoded string representation of the QR code. $options and a new QRMatrix object are passed to QRImageWithLogo's constructor, so that it knows how to generate the QR code and the data to store in it.

We've also set eccLevel to ECC_H to allow us to overlay a logo on the QR code, and set version to 7 to allow for a higher level of error correction, required because of the increased level of data in the QR code.Īfter that, we initialize $qrOutputInterface as a new QRImageWithLogo instance, which handles generating a QR code and overlaying the specified image on it using PHP's GD extension. The higher the value, the higher the QR code's quality. scale: This sets the size of a QR code pixel.I've set it to true, as it makes rendering the QR code simpler. imageBase64: This determines if the QR code will be rendered as binary data or a Base64-encoded string.In addition to these two, this code sets two others:

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