Online PHP editor | output for Vk7hc

@ 2019-02-12T06:57:56Z

<?php
$array = array(
    "a" => "xxx",
    "b" => "xxx",
    "c" => array(
        "g" => "xxx",
        "a" => "xxx",
        "h" => "xxx",
    ),
    "d" => "xxx",
    "e" => array(
        "i" => array(
            "a" => "xxx",
            "k" => array(
                "l" => "xxx",
                "b" => "xxx",
            ),
        ),
        "j" => "xxx",
    ),
    "f" => "xxx",
    'h' => array(
        'p' => 'xxx',
        'n' => 'xxx'
        )
);
function remove_dup_keys(&$array, &$keys = array()) {
    foreach ($array as $key => &$value) {
        if (in_array($key, $keys)) {
            unset($array[$key]);
        }
        else {
            $keys[] = $key;
        }
    }
    foreach ($array as $key => &$value) {
        if (is_array($value)) {
            remove_dup_keys($value, $keys);
        }
    }
}

remove_dup_keys($array);
print_r($array);

Output for 7.1.25, 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 ( [a] => xxx [b] => xxx [c] => Array ( [g] => xxx ) [d] => xxx [e] => Array ( [i] => Array ( [k] => Array ( [l] => xxx ) ) [j] => xxx ) [f] => xxx [h] => Array ( [p] => xxx [n] => xxx ) )
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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