I like more explicit findFiles('*')

OK, but, in my opinion, it is problem that if you call it with empty $masks, you get notice Undefined offset: 0 in instead of something more meaningful.

And can you fix it?

yes

Argument $masks is now required. Do you like it more?

What about to change declaration to findFiles($mask, ...$masks), ie. native enforce first parameter?

And perhaps use only one way: the array or more parameters. The second way should be deprecated.

What about to change declaration to findFiles($mask, ...$masks), ie. native enforce first parameter?

I think it would be unnecessarily overcombined and little bit confusing.

What about to unify API of Finder and RobotLoader in some way? RobotLoader accepts array or comma separated string while Finder accepts array or argument list. I like the array|string version or only array eventually.

It may be just me, but I would prefer that calling findFiles() without arguments was allowed and always resulted in finding nothing.

I can imagine I would be a little bit confused if function named find() returned nothing and did not throw any warning or error.

and always resulted in finding nothing

And someone might expect the opposite, find all files (i.e. no mask -> no filter -> find everything).

I agree with @Majkl578 and also with @JanTvrdik.

findFiles can be understood as find-all as well as find-nothing. What about clarify to findFiles()->all(),allFiles, findFiles(Finder::ALL). Also we could require at least one argument to findFiles.

Just an idea, let's discuss it.

According to me, function that does not find anything by default is useless.

Take Linux command find for example. Does not matter whether you run it by find or find .. It always finds all files in the directory unless you limit it by some pattern.

Another thing: imagine you have a directory and you want to check whether it is empty. You call Finder::findFiles(), it finds nothing and you remove the directory with confidence. But it contained important files you did not back up... You lost your files only because you forget to specify pattern when finding files...

I also think findFiles without any mask should return all files. It makes more sense then returning nothing and is consistent with similar tools.

Thanks @dg