# The Class Map Generator utility: bin/classmap\_generator.php

> ### Removed functionality
> 
> The script `bin/classmap_generator.php` has been removed and is no longer available.
> Instead, we recommend using [Composer for autoloading](https://getcomposer.org/doc/04-schema.md#autoload).

If you are upgrading from an existing Laminas v2 application, please refer to the [migration guide](https://docs.laminas.dev/tutorials/migration/to-v3/application/#scripts) for more detailed information.