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Subject: Re: [PHP-DEV] [RFC] Optional Catch Block Body
Date: Thu, 31 Jul 2025 15:32:08 +0200
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Message-ID: <5A451842-1B55-4ADC-A747-C897FB3CE323@cschneid.com>
From: cschneid@cschneid.com (Christian Schneider)

Am 31.07.2025 um 09:10 schrieb Rob Landers <rob@bottled.codes>:
> I can see something like this being useful in niche applications. For =
example, I have a proxy generation class that creates something like =
this:
>=20
> public function remoteCall() {
>   $this->operation =3D nameof($this->remoteCall(...));
>   $this->arguments =3D func_get_args();
>   throw new SpecialException();
> }
>=20
> This SpecialException gets caught to let me know the application has =
consumed the one-use proxy. Using it looks something like=20
>=20
> rpc(fn(RemoteObject $o) =3D> $o->remoteCall());
>=20
> which just provides type-safe rpc at the expense of some boilerplate.
>=20
> I also use empty exceptions to "jump" the stack when my framework =
knows there is nothing more to do until outside events happen. I think I =
could probably use fibers to do the same, but if the user is using a =
fiber library; there is no guarantee they'll play nice together. This is =
true with exceptions as well, but the user has direct control over =
exceptions (do not catch Throwable, for instance).

I'm not 100% sure I understood your examples but this smells like you =
are using exceptions for flow (or maybe state?) control which I'm not =
sure I would encourage.

Regards,
- Chris