Underscore.php mixin: multisort

multisort.php

<?php
    __()->mixin([
        "reindex" => function ($items, $indices) {
            return __($indices)->map(function ($index) use ($items) { return $items[$index]; });
        },
        
        "multisort" => function ($items, $keys) {
            if (count($items) <= 1) {
                return $items;
            }
            $__items = __($items);
            $args = [];
            foreach ($keys as $key) {
                if (!is_array($key)) {
                    $key = [$key];
                }
                $property = array_shift($key);
                $args[] = $__items->pluck($property);
                $args = array_merge($args, $key);
            }
            $indices = __()->range($__items->size());
            $args[] = &$indices;
            call_user_func_array("array_multisort", $args);
            return $__items->reindex($indices);
        }
    ]);
    
    function format($president) {
        return sprintf(
            "%d: %s %s (%s)",
            $president["order"],
            $president["firstName"],
            $president["lastName"],
            $president["party"]);
    }
    
    function display($presidents) {
        print_r(__($presidents)->invoke("format"));
    }
    
    $presidents = __([
        ["order" => 1, "firstName" => "George", "lastName" => "Washington", "party" => "None"],
        ["order" => 2, "firstName" => "John", "lastName" => "Adams", "party" => "Federalist"],
        ["order" => 3, "firstName" => "Thomas", "lastName" => "Jefferson", "party" => "Democratic-Republican"],
        ["order" => 4, "firstName" => "James", "lastName" => "Madison", "party" => "Democratic-Republican"],
        ["order" => 5, "firstName" => "James", "lastName" => "Monroe", "party" => "Democratic-Republican"],
        ["order" => 6, "firstName" => "John Quincy", "lastName" => "Adams", "party" => "Democratic-Republican"],
        ["order" => 7, "firstName" => "Andrew", "lastName" => "Jackson", "party" => "Democratic"],
        ["order" => 8, "firstName" => "Martin", "lastName" => "Van Buren", "party" => "Democratic"],
        ["order" => 9, "firstName" => "William Henry", "lastName" => "Harrison", "party" => "Whig"],
        ["order" => 10, "firstName" => "John", "lastName" => "Tyler", "party" => "Whig"]
    ]);
    
    display($presidents->multisort(["firstName"]));
    display($presidents->multisort([["lastName", SORT_DESC]]));
    display($presidents->multisort(["party", ["order", SORT_DESC]]));
?>

output.txt

Array
(
    [0] => 7: Andrew Jackson (Democratic)
    [1] => 1: George Washington (None)
    [2] => 4: James Madison (Democratic-Republican)
    [3] => 5: James Monroe (Democratic-Republican)
    [4] => 2: John Adams (Federalist)
    [5] => 10: John Tyler (Whig)
    [6] => 6: John Quincy Adams (Democratic-Republican)
    [7] => 8: Martin Van Buren (Democratic)
    [8] => 3: Thomas Jefferson (Democratic-Republican)
    [9] => 9: William Henry Harrison (Whig)
)
Array
(
    [0] => 1: George Washington (None)
    [1] => 8: Martin Van Buren (Democratic)
    [2] => 10: John Tyler (Whig)
    [3] => 5: James Monroe (Democratic-Republican)
    [4] => 4: James Madison (Democratic-Republican)
    [5] => 3: Thomas Jefferson (Democratic-Republican)
    [6] => 7: Andrew Jackson (Democratic)
    [7] => 9: William Henry Harrison (Whig)
    [8] => 2: John Adams (Federalist)
    [9] => 6: John Quincy Adams (Democratic-Republican)
)
Array
(
    [0] => 8: Martin Van Buren (Democratic)
    [1] => 7: Andrew Jackson (Democratic)
    [2] => 6: John Quincy Adams (Democratic-Republican)
    [3] => 5: James Monroe (Democratic-Republican)
    [4] => 4: James Madison (Democratic-Republican)
    [5] => 3: Thomas Jefferson (Democratic-Republican)
    [6] => 2: John Adams (Federalist)
    [7] => 1: George Washington (None)
    [8] => 10: John Tyler (Whig)
    [9] => 9: William Henry Harrison (Whig)
)