Extending the PHP Language with Static Analysis- Dave Liddament
summary
Claims that you can prototype real language features using static analysis and attributes and demonstrates it end to end: uses PHPStan plus Nikita’s PHP parser to walk the AST, implements a custom rule that forbids calling TextMessageSender::sendMessage except from TextMessageQueueProcessor, then replaces hard‑coded config with a friend attribute and a small reflection check. Shows the PHP Language Extension library (friend, package, injectable, test_tag), notes type info is required, and that the implementation is a few dozen lines wired into CI.
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chapters (11)
- 0:00Extending PHP with static analysis
- 3:09Solving constraints with static analysis
- 6:39RFC process and static analysis
- 11:17Deep dive into AST
- 15:07Custom PHPStan rule step by step
- 21:25Implementing friend attribute
- 27:05Making rule generic and reusable
- 35:25PHP Extension Library
- 43:56Communicating intent with new features
- 47:49Benefits and future of static analysis
- 51:55Q&A
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