Online PHP editor | output for McAek

@ 2024-10-02T00:26:17Z

<?php

function partial(callable $callable, ...$initialargs): callable {
    return fn (...$args) => $callable(...$initialargs, ...$args);
}

$data = [
    [
        'quiz' => 2,
        'question' => 7,
        'notif' => 'sup'
    ],
    [
        'quiz' => 3,
        'question' => 7,
        'notif' => 'pus'
    ],
    [
        'quiz' => 2,
        'question' => 3,
        'notif' => 'yoyoyo'
    ]
];

$keys = fn(array $data, string $key): callable => partial(array_keys(...), array_column($data, $key));
$indices = fn(array $data, string $key): array => array_map($keys($data, $key), array_column($data, $key, $key));
$map = fn(array $data): callable => partial(array_map(...), fn(int $i): array => $data[$i]);
$byx = fn(array $data, string $x): array => array_map($map, $indices($data, $x));

$byquiz = $byx($data, 'quiz');
$byquizandquestion = array_map(fn($d) => $byx($d, 'question'), $byquiz);
print_r($byquizandquestion);

Output for 8.4.1 - 8.4.2: Fatal error: Uncaught TypeError: {closure:/in/McAek:28}(): Argument #1 ($data) must be of type array, Closure given, called in /in/McAek on line 31 and defined in /in/McAek:28 Stack trace: #0 /in/McAek(31): {closure:/in/McAek:28}(Object(Closure), 'question') #1 [internal function]: {closure:/in/McAek:31}(Object(Closure)) #2 /in/McAek(31): array_map(Object(Closure), Array) #3 {main} thrown in /in/McAek on line 28
Process exited with code 255.
Output for 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.15: Fatal error: Uncaught TypeError: {closure}(): Argument #1 ($data) must be of type array, Closure given, called in /in/McAek on line 31 and defined in /in/McAek:28 Stack trace: #0 /in/McAek(31): {closure}(Object(Closure), 'question') #1 [internal function]: {closure}(Object(Closure)) #2 /in/McAek(31): array_map(Object(Closure), Array) #3 {main} thrown in /in/McAek on line 28
Process exited with code 255.

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