Online PHP editor | output for sNluJ

@ 2022-02-27T20:27:58Z

<?php

// Here's the data:

$json = json_decode('[
    [{"id":1,"price":11900},{"id":2,"price":499},{"id":3,"price":2099}],
    [{"id":1,"price":11900},{"id":2,"price":499},{"id":4,"price":999}],
    [{"id":1,"price":11900},{"id":2,"price":499},{"id":5,"price":899}],
    [{"id":1,"price":11900},{"id":2,"price":499},{"id":6,"price":2999}]
    ]', true);

// Calculate the sums for all prices up-front:

$sums = array_map(fn($v) => array_sum(array_column($v, 'price')), $json);

// Pass the sums into our key-based sorter:

uksort($json, function($b, $a) use ($sums) {
    return $sums[$a] <=> $sums[$b];
});

// See the sums, get the sorted data:

var_dump($sums, $json);

Output for 8.1.3 - 8.1.34, 8.2.10 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.7: array(4) { [0]=> int(14498) [1]=> int(13398) [2]=> int(13298) [3]=> int(15398) } array(4) { [3]=> array(3) { [0]=> array(2) { ["id"]=> int(1) ["price"]=> int(11900) } [1]=> array(2) { ["id"]=> int(2) ["price"]=> int(499) } [2]=> array(2) { ["id"]=> int(6) ["price"]=> int(2999) } } [0]=> array(3) { [0]=> array(2) { ["id"]=> int(1) ["price"]=> int(11900) } [1]=> array(2) { ["id"]=> int(2) ["price"]=> int(499) } [2]=> array(2) { ["id"]=> int(3) ["price"]=> int(2099) } } [1]=> array(3) { [0]=> array(2) { ["id"]=> int(1) ["price"]=> int(11900) } [1]=> array(2) { ["id"]=> int(2) ["price"]=> int(499) } [2]=> array(2) { ["id"]=> int(4) ["price"]=> int(999) } } [2]=> array(3) { [0]=> array(2) { ["id"]=> int(1) ["price"]=> int(11900) } [1]=> array(2) { ["id"]=> int(2) ["price"]=> int(499) } [2]=> array(2) { ["id"]=> int(5) ["price"]=> int(899) } } }

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