Re: [RFC] Context Managers, v2

On Wed, Nov 11, 2026, at 8:46 AM, Larry Garfield wrote: >> «A return statement inside the BODY will return from the function the >> code is currently executing in. A finally block in the generator >> context manager will still be executed, but otherwise control returns >> to the function's caller.» >> This is also hard to get for me. >> Can you detail what this would output: >> function context(): \Generator { >> echo "A\n"; >> yield "B"; >> echo "C\n"; >> return "D"; >> } >> var_dump( >> using (context() => $c) { >> echo "E\n"; >> return "F"; >> } >> ); > > I believe (without actually running it) that would output: > > A > E > > The return "F" terminates the function that the var_dump()/using() > construct is in. The generator is discarded without ever reaching its > end, so the generator's return statement is never reached. > > That said, you have brought up an interesting question, I have no idea > what happens when you var_dump() a compound expression like this that > returns. Something for Arnaud to write tests for. 0:-) > > --Larry Garfield Actually I'm wrong. I checked with Arnaud, and it will print A E C. When you return from the CM block, the generator is first resumed so that it gets a chance to do its cleanup, in this case printing C. When it completes, then the function return happens. The var_dump() is never called, because the function returned before that happened. I have reworded the RFC a bit to make that clearer. Thanks for calling it out. --Larry Garfield