Online PHP editor | rfc for fTUWr

@ 2020-09-13T03:56:43Z

<?php

$itemList = array(
    array("id" => 100,"categorypath" => "level1/powders", "product" => "Mens powder"),
    array("id" => 200,"categorypath" => "level1/oils/sunflower", "product" => "XYZ oil"),
    array("id" => 300,"categorypath" => "level1/eatable/vegetables", "product" => "carrot"),
    array("id" => 400,"categorypath" => "level1/oils/sunflower", "product" => "ABC oil"),
    array("id" => 500,"categorypath" => "level1/eatable/fruits", "product" => "mango"),
    array("id" => 600,"categorypath" => "level1/eatable/vegetables", "product" => "spinach"),
    array("id" => 700,"categorypath" => "level2/baby items/toys", "product" => "puzzle block"),
    array("id" => 800,"categorypath" => "level2/baby items/toys", "product" => "trucks and cars"),
    array("id" => 900,"categorypath" => "level2/baby items/clothes", "product" => "shirts"),
    array("id" => 1000,"categorypath" => "level1/powders", "product" => "Womens powder"),
    array("id" => 1100,"categorypath" => "level1/oils/groundnut", "product" => "GN oil"), 
);


// First, group products into their categories.
$categoryList = [];
foreach ($itemList as $item){
    $categoryList[$item['categorypath']][] = [
        'id' => $item['id']
        , 'path' => $item['categorypath']
        , 'prodname' => $item['product']
    ];
}

// Now, create a tree structure out of the categories
$jsonTree = ['category'=>[]];
$lookupTable = [];
foreach ($categoryList as $category=>$productList){
    $componentList = explode('/', $category);

    $path = '';
    $parent = &$jsonTree;
    do {
        $component = array_shift($componentList);
        $path .= $component.'/';

        $entry = &$lookupTable[$path];
        if (!$entry){
            $entry = [
                'categoryName' => $component
            ];

            $parent['category'][] = &$entry;
        }

        $parent = &$entry;
    } while ($componentList);

    $entry['products'] = $productList;
}

echo json_encode($jsonTree, JSON_PRETTY_PRINT);

Output for git.master, git.master_jit, rfc.property-hooks: { "category": [ { "categoryName": "level1", "category": [ { "categoryName": "powders", "products": [ { "id": 100, "path": "level1\/powders", "prodname": "Mens powder" }, { "id": 1000, "path": "level1\/powders", "prodname": "Womens powder" } ] }, { "categoryName": "oils", "category": [ { "categoryName": "sunflower", "products": [ { "id": 200, "path": "level1\/oils\/sunflower", "prodname": "XYZ oil" }, { "id": 400, "path": "level1\/oils\/sunflower", "prodname": "ABC oil" } ] }, { "categoryName": "groundnut", "products": [ { "id": 1100, "path": "level1\/oils\/groundnut", "prodname": "GN oil" } ] } ] }, { "categoryName": "eatable", "category": [ { "categoryName": "vegetables", "products": [ { "id": 300, "path": "level1\/eatable\/vegetables", "prodname": "carrot" }, { "id": 600, "path": "level1\/eatable\/vegetables", "prodname": "spinach" } ] }, { "categoryName": "fruits", "products": [ { "id": 500, "path": "level1\/eatable\/fruits", "prodname": "mango" } ] } ] } ] }, { "categoryName": "level2", "category": [ { "categoryName": "baby items", "category": [ { "categoryName": "toys", "products": [ { "id": 700, "path": "level2\/baby items\/toys", "prodname": "puzzle block" }, { "id": 800, "path": "level2\/baby items\/toys", "prodname": "trucks and cars" } ] }, { "categoryName": "clothes", "products": [ { "id": 900, "path": "level2\/baby items\/clothes", "prodname": "shirts" } ] } ] } ] } ] }

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2022-12-01 RFC: Property hooks - included in PHP 8.4
2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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