Online PHP editor | output for rvhX9

@ 2021-12-28T08:36:37Z

<?php

function get_array_deep_value(array $array, array $levelKeys) {
    foreach ($levelKeys as $index => $key) {
        if (!key_exists($key, $array)) {
            throw new Exception("key $key not found at level index $index");
        }
        $array = $array[$key];
    }
    return $array;
}

$myArray = [
    'one' => [
        'two' => [
            'three' => [
                4
            ]
        ]
    ]
];

$pathArrays = [
    ['one', 'two', 'three'],
    ['one', 'two'],
    ['one'],
    ['two']
];

foreach ($pathArrays as $pathArray) {
    try {
        var_export(get_array_deep_value($myArray, $pathArray));
    } catch (Exception$e) {
        //echo $e->getMessage();
        var_export(null);
    }
    echo "\n---\n";
}

Output for 7.3.13 - 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 - 8.3.4, 8.3.6 - 8.3.25, 8.4.1 - 8.4.12: array ( 0 => 4, ) --- array ( 'three' => array ( 0 => 4, ), ) --- array ( 'two' => array ( 'three' => array ( 0 => 4, ), ), ) --- NULL ---
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 ( 0 => 4, ) --- array ( 'three' => array ( 0 => 4, ), ) --- array ( 'two' => array ( 'three' => array ( 0 => 4, ), ), ) --- NULL ---

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