PHP Intermediate → Advanced ~12 weeks

PHP: From Intermediate to Advanced

Advanced PHP is mostly architecture and operations rather than language features, because the language itself is not large. The problems that define the level are the ones that appear at traffic: a request doing work it should have queued, an N+1 query pattern the ORM generated quietly, and a cache layer that is either absent or wrong in a way nobody notices until it serves stale data.

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Free to start · no credit card · the outline below is an example, yours is generated around your goals

What this path covers

  • Application architecture
  • Queues and background work
  • Caching strategy
  • Database performance
  • Profiling with Xdebug and Blackfire
  • Static analysis

Sample curriculum

An example outline for going from intermediate to advanced in PHP. Your generated course adapts this to your experience, target level and available study time.

  1. Architecture That Survives

    Separating domain logic from framework code, service and repository layers used deliberately rather than by habit, and the dependency direction that keeps business rules testable.

  2. Queues and Deferred Work

    Moving slow work out of the request cycle, queue drivers and workers, idempotent jobs, retries and backoff, and failure handling that does not silently drop tasks.

  3. Caching Without Lying

    Cache layers from opcode to application to HTTP, invalidation strategies, cache stampedes and how to prevent them, and deciding what is safe to serve slightly stale.

  4. Database Performance

    Reading EXPLAIN, the N+1 problem and eager loading, index design, and knowing when the ORM should be stepped around in favour of a written query.

  5. Profiling Real Applications

    Xdebug and Blackfire, finding the slow path rather than the suspected one, memory profiling for long-running workers, and interpreting a flame graph.

  6. Static Analysis and Types

    PHPStan or Psalm at increasing levels, generics through docblocks, adopting strict types across an existing codebase, and treating the analyser as a test suite that runs instantly.

PHP intermediate-to-advanced questions

What is the N+1 query problem?

Loading a list of records with one query, then triggering another query per record while looping over their relations - so a page showing fifty items runs fifty-one queries. ORMs make it easy to write by accident, which is why the database module leads with it.

Is static analysis worth it on an existing PHP codebase?

Yes, adopted incrementally. Both PHPStan and Psalm run at graduated strictness levels precisely so a legacy project can start at a level it passes and tighten over time, rather than facing thousands of errors on day one.

Do I still need to know PHP without a framework at this level?

More than at the intermediate level, not less. Senior work involves deciding when the framework is helping and when it is in the way, and that judgement is impossible if the framework is the only PHP you know.

Where to go next

Start from the beginning in PHP PHP: From Beginner to Intermediate Another PHP path PHP: From Beginner to Advanced Next step in PHP PHP: From Absolute Beginner to Job Ready Same level in Ruby Ruby: From Intermediate to Advanced Same level in SQL SQL: From Intermediate to Advanced

Ready to start PHP?

PHP is the language a large share of the web still runs on, and it has changed a lot. Tell LearnForge where you are now and where you want to get to, and it builds the course around that.

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