feature request: data breakpoints

[Ernestopheles]

I am missing a feature to set data breakpoints, i.e. have debugging stop when a condition comes true, especially a variable changes its value (in generell or to a specific value). As far as I can see this is now only possible at a specific code line but not globally.

[zobo]

Hello. I do not think this is possible with Xdebug. But you could probably implement a setter magic function and set up a conditional breakpoint there.

[Ernestopheles]

Thanks, but the setter does not help in this case. What reasons are there that hinders xdebug to have data breakpoints? Is it PHP itself, the IDE or the plugin?

[zobo]

First this is not supported in Xdebug. You can open a feature request here https://bugs.xdebug.org/ , but I'm sure this will not be a small task and Derick has little time for extra Xdebug features sadly (sponsors can help...)

Second it seems that the DAP has support for this https://microsoft.github.io/debug-adapter-protocol/specification#Requests_SetDataBreakpoints and https://microsoft.github.io/debug-adapter-protocol/specification#Requests_DataBreakpointInfo .

However I do not think I have seen UI support for this in VS Code. That would also need to be implemented (by Microsoft) https://github.com/microsoft/vscode/issues

I think the only way to get this is to structure your code in such way that you can set a file/line breakpoint or add xdebug_break() code...

[Ernestopheles]

Thanks for bringing light into this.

Going to open issues at the places you mentioned and trying to work around in the maybe long lasting meanwhile.

[Ernestopheles]

microsoft/vscode#185985 (comment)

[zobo]

Hi! Apparently I was wrong here, sorry for letting you run circles. I'm traveling and will try to look at again this as soon as I can.