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QR & Barcode

Does it provide a way to generating qr & barcode? Is it possible to use a php composer package to generate it such as zendframework/zend-barcode


No, Phalcon does not have a component for that. You can use either zendframework/zend-barcode or https://phpqrcode.sourceforge.net/. Phalcon does not have restrictions to use external libraries.