What steps are typically involved in a standard PHP application deployment process, from code changes to a live production update?

A typical deployment process involves running the application's test suite to verify the code changes have not introduced any regressions, running Composer to install production dependencies with development tools excluded, running any necessary database migrations, clearing and rebuilding application caches, and then switching production traffic over to the newly deployed code, often using a technique like a symlink swap that allows for near instant rollback if something goes wrong immediately after deployment.

composer install --no-dev --optimize-autoloader
php artisan migrate --force
php artisan config:cache
ln -sfn /var/www/releases/new /var/www/current