laravel what does optimize:clear do code example

Example: php artisan optimize command

# Install application dependencies, such as the Laravel framework itself.
#
# If you run composer update in development and commit the `composer.lock`
# file to your repository, then `composer install` will install the exact
# same versions in production.
composer install --no-interaction

# Clear the old boostrap/cache/compiled.php
php artisan clear-compiled

# Recreate boostrap/cache/compiled.php
php artisan optimize

# Migrate any database changes
php artisan migrate