Online PHP editor | rfc for nY7ZW

@ 2019-12-20T20:08:36Z

<?php
$comments='[
    {
        "user": "5",
        "points": "12"
    },
    {
        "user": "2",
        "points": "1"
    },
    {
        "user": "3",
        "points": "1"
    }
]';
$likes='[
    {
        "user": "1",
        "points": 7
    },
    {
        "user": "4",
        "points": 4
    },
    {
        "user": "3",
        "points": 1
    }
]';
$posts='[
    {
        "user": "1",
        "points": "6"
    },
    {
        "user": "3",
        "points": "2"
    },
    {
        "user": "2",
        "points": "1"
    }
]';

$merged = array_merge(json_decode($comments, true), json_decode($likes, true), json_decode($posts, true));
$result = [];
foreach ($merged as $entry) {
    if (!isset($result[$entry['user']])) {
        $result[$entry['user']] = $entry;
    } else {
        $result[$entry['user']]['points'] += $entry['points'];
    }
}
array_multisort(array_column($result, 'user'), $result);
//usort($result, function($a, $b) { return $a['user']<=>$b['user']; });  // this is the most modern style, change if too advanced for your php version
echo json_encode($result);

Output for git.master, git.master_jit, rfc.property-hooks: [{"user":"1","points":13},{"user":"2","points":2},{"user":"3","points":4},{"user":"4","points":4},{"user":"5","points":"12"}]

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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