yii2 `VarDumper::exportClosure()` not support arrow functions

VarDumper::exportClosure() not support arrow functions:

$f = fn($x) => $x + 10;
VarDumper::export($f);

Additional info

Q	A
Yii version	2.0.43
PHP version	7.4
Operating system	any

Oct 15 '21 18:10 WinterSilence

https://github.com/yiisoft/var-dumper/blob/master/src/ClosureExporter.php from Yii 3 could be useful for ideas on how to fix that. It supports short closures.

Oct 18 '21 13:10 samdark

@samdark bad idea - "php": "^7.4|^8.0"

Oct 18 '21 14:10 WinterSilence

I haven't said that the library should be used. I've said there are interesting ideas there.

Oct 18 '21 16:10 samdark

@samdark why not https://github.com/jeremeamia/super_closure or https://opis.io/closure/3.x/ ?

Oct 18 '21 16:10 WinterSilence

SuperClosure is not maintained anymore.
We've initially used Opis for Yii 3 but then found that it doesn't work for a few edge cases we had and that the 4.x version will require FFI.
It is another dependency. We'd like to avoid it (especially considering that it's already implemented for Yii 3 and could be partially back-ported).

Oct 18 '21 20:10 samdark