按类别划分的树图

Question

I'm trying to build a tree-map from categories.

I have the categories (I have a lot of categories and I want to remove duplicates and show them in a tree-map view)

$cat = array(
    "Sneakers/Men",
    "Sneakers/Women",
    "Accessories/Jewellery/Men",
    "Accessories/Jewellery/Women",
    "Accessories/Jewellery/Men
");

...and I want them like this

$categories = array(
    "Sneakers" => array(
        "Men" => array(),
        "Women" => array()
    ),
    "Accessories" => array(
        "Jewellery" => array(
            "Men" => array(),
            "Women" => array()
        )
    )
);

to print them like this

- Sneakers
-- Men
-- Women

- Accessories
-- Jewellery
--- Men
--- Women

Answer 1

Try this:

<?php
$cat = array(
    "Sneakers/Men",
    "Sneakers/Women",
    "Accessories/Jewellery/Men",
    "Accessories/Jewellery/Women",
    "Accessories/Jewellery/Men
");

function buildTree($categories, $result = []){
    $temp = [];
    foreach($categories as $categoryString){
        $catParts = explode('/',$categoryString);
        if(count($catParts) > 1){
            $temp[$catParts[0]][] = str_replace($catParts[0].'/','',$categoryString);
        } else {
            $temp[$catParts[0]] = [];
        }

    }
    foreach($temp as $elemName => $elemVal){
        $result[$elemName] = buildTree($elemVal);
    }
    return $result;
}

var_dump(buildTree($cat));