-1, this will properbly confuse people. It's not a common known feature of PHP. I prefer to put the variables outside the quotes instead

does symfony avoid this syntax all the time on its source code? I never saw a discussion on this but interested in learning the reason.

I personally like to wrap interpolated variables just to be on the safe side, but I agree that it might confuse people who are new to PHP as in most books/etc. I read/checked interpolation is actually quite a common reference.

As someone who just recently read all the book, cookbook and most of the components, as far as I can remember I think is the only page I saw interpolated variables in the documentation.

In the rest of the docs, we use"A string with a".$variable.", yeah!". Let's use it here too

Yes, most of code examples use concatenation. This PR should be closed then.

well, if you can update this PR to change it to concatenation, it'll be better :) (otherwise, you can hit the close button yourself and create an issue, so someone else can do it)

I also removed newline character on last echo statement as I could not thing of good reason why this one has a it and other foreach loops doesn't.

I think the Symfony standard is to use single quotes instead of double quotes.

Nice work guys 👍!