Barcode

barcode.php

<?php

<<<CONFIG
packages:
    - "zendframework/zend-barcode: ^2.5"
    - "symfony/console: ^2.7"
CONFIG;

use Symfony\Component\Console\Application;
use Symfony\Component\Console\Helper\QuestionHelper;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Question\ConfirmationQuestion;
use Zend\Barcode\Barcode;
use Zend\ServiceManager\Config;

(new Application())
    ->register('barcode')
        ->setDescription('generate a bar code')
        ->addArgument('what', InputArgument::REQUIRED, 'What to print as bar code')
        ->setCode(function (InputInterface $input, OutputInterface $output) {
            $what = $input->getArgument('what');
            $file = $what.'.png';
            if (file_exists($file)) {
                $question = new ConfirmationQuestion("The files $file already exists. Override it? [Yn] ");
                $helper = new QuestionHelper();
                if (!$helper->ask($input, $output, $question)) {
                    return 0;
                }
            }
            $image = Barcode::factory('code39', 'image', ['text' => $what], [])->draw();

            imagepng($image, $file);

            $output->writeln("<comment>$file</> generated");
        })
    ->getApplication()
    ->run()
;