Console command

symfony console make:command app:send-reminders --argument recipient:string --option dry-run:bool

Install the bundle first if it is missing: symfony composer require --dev symfony/maker-bundle.

Declare every argument and option on the command line. --argument name[?][:type] and --option name[:type] repeat once per parameter. A ? marks an argument optional. Types are string, bool, int, float, array, or the name of a backed enum. The default type is string for arguments and bool for options. If you pass neither flag, a non-interactive run generates sample parameters ($arg, $enable) that you would have to delete, so declare the real ones up front.

What you get, and what to keep

Since maker-bundle 1.68 the command is invokable. The generated class carries #[AsCommand] and a single __invoke() method. Its parameters are the command's interface: a SymfonyStyle instance, then one parameter per argument and option, each declared with an #[Argument] or #[Option] attribute. There is no base class, no configure(), no execute(). Do not add them back.

What remains yours:

• Inject dependencies through the constructor.
• Return Command::SUCCESS or Command::FAILURE. Never a bare integer, never nothing.
• Write output through SymfonyStyle ($io->success(), $io->error(), $io->table()) rather than echo, so the command behaves under --quiet and in a pipe.
• Keep the logic in a service and let __invoke() orchestrate. A command is an entry point, the same as a controller.

A command run from cron that must not overlap takes symfony/lock: inject LockFactory, or use LockableTrait when the command only locks itself. A flag file or a database column checked at start is not a lock.