3v4l.org

run code in 300+ PHP versions simultaneously

@ 2020-08-05T07:18:45Z

<?php
declare(strict_types=1);

function iterateWithPath(array $input, array $path = []): iterable {
    foreach ($input as $key => $value) {
        $pathToHere = [...$path, $key];

        is_iterable($value)
            ? yield from iterateWithPath($value, $pathToHere)
            : yield $pathToHere => $value;
    }
}

function filterIterable(iterable $it, callable $filter): iterable {
    foreach ($it as $key => $value) {
        if ($filter($value, $key)) {
            yield $key => $value;
        }
    }
}

$input = [
    'steve'  => [
        'id' => [
            '#text' => 1,
        ],
    ],
    'albert' => [
        'id' => [
            '#text' => 2,
        ],
    ],
    'john'   => [
        'profil' => [
            'id' => [
                '#text' => 3,
            ],
        ],
    ],
];

$it = filterIterable(iterateWithPath($input), static function ($current, array $path): bool {
    return ['id', '#text'] === array_slice($path, -2)
        && 2 === $current;
});

foreach ($it as $path => $val) {
    print_r([
        'path' => $path,
        'val' => $val
    ]);
}

Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7: Array ( [path] => Array ( [0] => albert [1] => id [2] => #text ) [val] => 2 )
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Array ( [path] => Array ( [0] => albert [1] => id [2] => #text ) [val] => 2 )
Output for 7.2.33, 7.3.0 - 7.3.33: Parse error: syntax error, unexpected '...' (T_ELLIPSIS), expecting ']' in /in/0bj9M on line 6
Process exited with code 255.

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