Psr-14

Introduction # It is 2026. The days of monolithic, 2,000-line controller methods in PHP are—or at least should be—long behind us. Yet, as we scale our applications to handle the traffic demands of the modern web, we often hit a wall. A user registers, and suddenly your application is trying to save to the database, send a welcome email, subscribe them to a newsletter, generate an invoice, and notify a Slack channel. If any one of those third-party services hangs, your user is left staring at a loading spinner.