Use multiple output interface.

[hosmelq]

I need to create QRs with gradients so I believe I need to use SVG but also I need to add a logo inside. Seeing the examples imagickWithLogo and imagickConvertSVGtoPNG they extend for different classes. I would like to know if it's possible to achieve this.

Thanks in advance.

[codemasher]

Do you have a specific requirement for the output (e.g. raster image)? If the QR Code is intended to be displayed on the web, there's no need to convert and you can just run with one of the SVG examples.
The imagickWithLogo is a pure ImageMagick example that is intended for raster output, while imagickConvertSVGtoPNG extends the SVG output class and adds conversion to a raster image on top. The SVG conversion with ImageMagick may or may not come with some issues (see #247) and it's recommended to use the Inkscape command line for conversion instead (as noted in the example).
In any case, there's no need to use multiple output classes.

[codemasher]

In that case, your safest bet would be Inkscape, rather than ImageMagick.

[hosmelq]

Thank you very much, I will search for some examples. Do you know if I can use PNG logos with SVG? The example is with an SVG image but in my case users can only upload PNG/JPG.

[codemasher]

Yes, you can embed raster images in SVG with the <image>tag! See https://developer.mozilla.org/en-US/docs/Web/SVG/Element/image
The Inkscape command line documentation is over here: https://wiki.inkscape.org/wiki/Using_the_Command_Line
And you can even call it from within PHP via exec(): https://www.php.net/manual/en/function.exec or a command line library of your choice, e.g. https://github.com/symfony/process

[hosmelq]

Thank you for all the information. I will add the image as base64, I think adding it as a URL may introduce some problems is an image gets deleted.

[codemasher]

Yes that's generally a good idea, although it might bloat the SVG a bit. Good luck!