symfonyConsole.argumentNotFound - Phpstan

Code example

php

<?php declare(strict_types = 1);

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

final class MyCommand extends Command
{
	protected function configure(): void
	{
		$this->setName('my-command');
		$this->addArgument('name');
	}

	protected function execute(InputInterface $input, OutputInterface $output): int
	{
		$input->getArgument('undefined');

		return 0;
	}
}

Why is it reported?

The getArgument() call references an argument name that was not defined in the command's configure() method. At runtime, this would throw an InvalidArgumentException.

This error is reported by the phpstan-symfony extension, which resolves Symfony Console commands and validates that referenced arguments exist in the command's definition.

How to fix it

Use an argument name that matches one defined via addArgument() in the configure() method:

diff-php

-$input->getArgument('undefined');
+$input->getArgument('name');

Or add the missing argument definition:

diff-php

 protected function configure(): void
 {
 	$this->setName('my-command');
 	$this->addArgument('name');
+	$this->addArgument('undefined');
 }