<?php
$fruitpacks = [
['apples', 3],
['pears', 1],
['apples', 6],
['grapes', 22],
];
final class Basket {
private $items;
private function __construct(array $items) { $this->items = $items; }
public function add(string $name, int $quantity) : self {
return new self([$name => $quantity + ($this->items[$name] ?? 0)] + $this->items);
}
public function asArray() : array { return $this->items; }
public static function empty() : self { return new self([]); }
public static function addToBasket(self $basket, array $item) : self {
return $basket->add(...$item);
}
}
var_dump(array_reduce($fruitpacks, [Basket::class, 'addToBasket'], Basket::empty())->asArray());
- Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- array(3) {
["grapes"]=>
int(22)
["apples"]=>
int(9)
["pears"]=>
int(1)
}
preferences:
156.11 ms | 403 KiB | 197 Q