How to display a PHP multidimensional associative array with a while loop, a pointer and the current() function?

Good evening everyone,
Firstly, I would want to precise I’m new in the community. So I thank you to excuse-me concerning potential mistakes from my part.
Today I come to you because within the scope of my studies I must achieve a multidimensional associative array thank to PHP and display it thank a while loop, a pointer and the current() function.
I was able to create without any problems the array I'm asked to do, but I’m stuck to display this one.
You’ll find following the code I already achieved. The name of each variable was originally in French, but I did a translation effort for you haven’t to meet this complex language.

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