How to sort array based on condition to check maximum 2 digits in laravel sql

Question

In my reply I get

[
    {
        "id": 480,
        "HSN": 4808,
    },
    {
        "id": 575,
        "HSN": 5702,
    },
    {
        "id": 638,
        "HSN": 6301,
    },
    {
        "id": 765,
        "HSN": 7317,
    },
    {
        "id": 6626,
        "HSN": 47071000,
    },
    {
        "id": 6727,
        "HSN": 48081000,
    },
    {
        "id": 6728,
        "HSN": 48084010,
    }
]

But I want my reply to be sorted in a way that checks the HSN (based on the first 2 digits of the HSN) and gives me a result like this

[
    {
        "id": 6626,
        "HSN": 47071000,
    },
    {
        "id": 480,
        "HSN": 4808,
    },
    {
        "id": 6727,
        "HSN": 48081000,
    },
    {
        "id": 6728,
        "HSN": 48084010,
    },
    {
        "id": 575,
        "HSN": 5702,
    },
    {
        "id": 638,
        "HSN": 6301,
    },
    {
        "id": 765,
        "HSN": 7317,
    }
]

I've tried sortBy , the sorting method, but it doesn't seem to work for me, or I'm doing it the wrong way. Help me get it the right way

Answer 1

First you must read the documentation about usort and strcmp

$data = [
    [
        "id" => 480,
        "HSN" => 4808,
    ],
    [
        "id"=> 575,
        "HSN"=> 5702,
    ],
    [
        "id"=> 638,
        "HSN"=> 6301,
    ],
    [
        "id"=> 765,
        "HSN"=> 7317,
    ],
    [
        "id"=> 6626,
        "HSN"=> 47071000,
    ],
    [
        "id"=> 6727,
        "HSN"=> 48081000,
    ],
    [
        "id"=> 6728,
        "HSN"=> 48084010,
    ]
];

usort($data, function($arr1, $arr2) {
    return strcmp($arr1['HSN'], $arr2['HSN']);
});

dd($data);

Explanation about usort and strcmp maybe you have to read the documentation to understand it more deeply.