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@ 2025-02-20T15:36:25Z

<?php
$users = [
    [
        "id" => 1,
        "name" => "rahul",
        "premium" => true,
        "purchases" => ["apple", "banana", "carrot"],
        "price" => 22,
        ],
    [        
        "id" => 2,
        "name" => "abhi",
        "premium" => false,
        "purchases" => ["apple", "banana", "carrot"],
        "price" => 22,
        ],
        [        
        "id" => 3,
        "name" => "kavita",
        "premium" => true,
        "purchases" => ["apple", "banana", "carrot", "orange"],
        "price" => 30,
        ],
    ];

$premiumUsers = array_reduce(
    $users,
    function ($carry, $user) {
        if ($user['premium']) {
            $carry[] = [
                "name" => $user["name"],
                "purchases" => $user["purchases"],
                "price" => $user["price"] - 2
                ];
        }
        return $carry;
    },
    []
);

print_r($premiumUsers);

/**
 * Array
(
    [0] => Array
        (
            [name] => rahul
            [purchases] => Array
                (
                    [0] => apple
                    [1] => banana
                    [2] => carrot
                )

            [price] => 20
        )

    [1] => Array
        (
            [name] => kavita
            [purchases] => Array
                (
                    [0] => apple
                    [1] => banana
                    [2] => carrot
                    [3] => orange
                )

            [price] => 28
        )

)
 */

Output for rfc.property-hooks, git.master, git.master_jit: Array ( [0] => Array ( [name] => rahul [purchases] => Array ( [0] => apple [1] => banana [2] => carrot ) [price] => 20 ) [1] => Array ( [name] => kavita [purchases] => Array ( [0] => apple [1] => banana [2] => carrot [3] => orange ) [price] => 28 ) )

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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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