[Feature] Integrate PsySH in dev mode

[vicb]

It would be great to be able to debug exception in dev mode with PsySH.

I've not yet look at the details and how hard this could be but using a REPL to debug misbehaved code is something really useful - This is something avaiable in the Python Pylons framework.

/cc @bobthecow

[sstok]

👍

[lyrixx]

There is this one too: https://github.com/d11wtq/boris

[hason]

👍
We can use websocket as in experimental implementation for the Tracy nette/tracy@59d9c81 - see in action http://vimeo.com/72138480

@lyrixx PsySH also works on windows

[vicb]

@hason The video shows exactly what I was thinking about, would be great to investigate more.

[hacfi]

@vicb Great idea..really cool stuff :)

[benglass]

👍 great idea

[lyrixx]

We are on it ;)

[HelloGrayson]

huge ass 👍

[HelloGrayson]

Not completely positive, but isn't PHPDGB going to be included in PHP 5.6? Perhaps we should look in that direction...

[lmammino]

seems cool 👌

[hason]

An another example of using websockets https://github.com/Hywan/PHP-live-execution

[lyrixx]

So I have tried lot of things:

• Open a debugger (REPL) when an error occurs. It is nice, but does not work with exceptions and fatal error => not so useful
• Add a kind on breakpoint function: When the user call it, the execution is stopped. Then it is possible to view / edit current scope. But this is not easy to setup because it need 2 tabs or 2 browser. I also tried to inline the form (text-area) in the first page, but it is not so easy because of different buffers of php / nginx / ...

[varas]

I use both PsySh and Symfony. PsySH is based upon Symfony/Command and i usually get conflicts when the component version that uses is different than the one on PsySh. It would be great to integrate both and solve this.

Even more funnier if a repl is open as a debug option. @lyrixx you could capture exceptions changing the handler, and even some errors. I made a proof of concept here https://github.com/varas/errepl

[bobthecow]

@varas If you add PsySH to your symfony project's composer.json then do composer update, it'll figure out a version of symfony and psysh that work together and you won't have any conflicts :)

[lyrixx]

Sorry, I did not take time to comment this topic.
We have tried to add a REPL when an exception is found but it's not so nice:

• PHP context is available only when a PHP error occur (not an exception)
• the worflow to maintain a REPL while PHP is dying is hard to understand and very hard to maintain because there is lot of edge case.
• acutally, the REPL is not so useful when an exception happen.

[varas]

Thanks @bobthecow i'm used to include require-dev's from global, but that seems to be more convenient.

[Markcial]

ping! any code samples, updates or a project started on this, should i work from scratch?

[lyrixx]

All my code is a very quick & dirty code.

But you can have a look to: https://github.com/dpb587/ti-debug which is a good start.

[fabpot]

Looks like it's not that easy. If anyone can create a PR, that would be great; closing this issue in the meantime.

[aar0nr]

If you're looking for a simple CLI for the container, kernel, and parameters, check out https://github.com/theofidry/PsyshBundle