Recursive arrays - TalkPHP

Hi guys.

I have the MySQL list 'categories'. Every difficulty has the 'parent_id' field. All the categorical elements have parent_id=0.

What I want is to make an multidimensional form which I can double back by to put in an unordened list (<ul>).

Something like:

I goal you assimilate what I'm perplexing to achieve.

Thanks for your help.

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