Online PHP editor | output for iWvnj

@ 2019-09-17T14:02:33Z

<?php

$arr = [
    0 =>
    [
        "id"    => "1",
        "color" => "red",
    ],
    1 =>
    [
        0 =>
        [
            "id"    => "2",
            "color" => "blue",
        ],
        1 =>
        [
            0 =>
            [
                "id"    => "3",
                "color" => "green",
            ],
        ],
        2 =>
        [
            "id"    => "4",
            "color" => "blue",
        ],
    ],
    2 =>
    [
        "id"    => "5",
        "color" => "purple",
    ],
];
function flattenArray($arr = [])
{
    $retArr = [];
    foreach ($arr as $val) {
        if (is_array($val)) {
            $retArr[] = array_filter($val, function ($v) {
                return !is_array($v);
            });
            $retArr = array_merge(array_filter($retArr), flattenArray($val));
        }
    }
    return $retArr;
}
$arr = flattenArray($arr);
print_r($arr);

Output for 7.1.25 - 7.1.32, 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: Array ( [0] => Array ( [id] => 1 [color] => red ) [1] => Array ( [id] => 2 [color] => blue ) [2] => Array ( [id] => 3 [color] => green ) [3] => Array ( [id] => 4 [color] => blue ) [4] => Array ( [id] => 5 [color] => purple ) )
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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