Where is 'php artisan tinker' in Lumen?

Laravel uses PsySH. Follow the instructions how to install it.

@samsoft You can use the following package: vluzrmos/tinker

1. Use the composer require command to add the package

composer require vluzrmos/tinker

2. Register it in the lumens application's service providers here: lumen\bootstrap\app.php

$app->register(Vluzrmos\Tinker\TinkerServiceProvider::class);

3. Finally in your console:

php artisan tinker

@jefkine @samsoft, actually it don't need to be in bootstrap/app.php, just on your artisan file. Docs: https://github.com/vluzrmos/lumen-tinker

seem not to have support for lumen5.5 yet

Simply:

composer require laravel/tinker

Then, in bootstrap/app.php

$app->register(Laravel\Tinker\TinkerServiceProvider::class);

Done!

If you only want Tinker in development? Do the following:

composer require --dev laravel/tinker

And then add the following in bootstrap/app.php:

if (class_exists('Laravel\Tinker\TinkerServiceProvider')) {
    $app->register(Laravel\Tinker\TinkerServiceProvider::class);
}

Just my two cents.