Symfony Console interactive did you mean

README.md

[Symfony\Component\Console\Exception\CommandNotFoundException]  
  Command "mow" is not defined.                                   
  Did you mean this?                                              
      meow                  

That's a nice error message, but we can do better. This is an example.

Run composer install, then php console.php mow. Should give you:

That command doesn't exist, did you mean:
  [0] meow

Hit 0 or type meow and it will actually run the command you meant to run in the first place.

composer.json

{
    "require": {
        "symfony/console": "^3.2"
    }
}

console.php

<?php

use Symfony\Component\Console\Application;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Exception\CommandNotFoundException;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Question\ChoiceQuestion;
use Symfony\Component\Console\Output\OutputInterface;

require __DIR__ . "/vendor/autoload.php";

$name = "Example";
$version = "v1.0";

$app = new class($name, $version) extends Application {
    public function doRun(InputInterface $input, OutputInterface $output)
    {
        $this->setCatchExceptions(false);
        
        try {
            return parent::doRun($input, $output);
        } catch (CommandNotFoundException $e) {
            $helper = $this->getHelperSet()->get('question');
            $question = new ChoiceQuestion(
                "That command doesn't exist, did you mean:",
                $e->getAlternatives(),
                0
            );
            $question->setErrorMessage('Try again.');
            
            $name = $helper->ask($input, $output, $question);
            $command = $this->find($name);

            $this->runningCommand = $command;
            $exitCode = $this->doRunCommand($command, $input, $output);
            $this->runningCommand = null;

            return $exitCode;
        }
        
        return 0;
    }
};

$command = new class extends Command {
    public function configure()
    {
        $this->setName("meow");
        $this->setDescription("Meow");
    }

    public function execute(InputInterface $input, OutputInterface $output)
    {
        $output->writeln("MEOW");
        
        return 0;
    }
};

$app->add($command);

$app->run();

Oh hey, there's a pull request for basically the same thing: symfony/symfony#19282