> Just a plug / reminder that Joe Watkins already wrote a parallel code Library **parallel** uses a trick to run code in another thread. It clones the function’s opcodes, including the static vars, which is a known PHP Engine behavior. In this case, the function runs inside a completely separate Zend VM.
For true parallelism, the following changes are needed: 1. Shared opcodes 2. A new memory allocator 3. A new GC similar to Go’s 4. Virtual threads (what FrankenPHP is doing now) 5. Possibly something else… Before starting the TrueAsync project, I tried to consider the possibility of implementing full parallelism, but ultimately I assessed the implementation cost as “impossible.” In addition, pure parallelism does not provide more performance (and sometimes even performs worse) for a web server than concurrency.
