Online PHP editor | output for sYutE

@ 2016-01-11T16:54:07Z

<?php
function func(&$data) {
    foreach ($data as $key => $value) {
        if (is_array($value)) {
            func($data[$key]);
        }
    }
}

$data = [
    ['k' => [0]],
    ['k' => [1]],
];

//ob_start(); debug_zval_dump($data[1]['k']); echo explode("\n", ob_get_clean())[0]."\n"; // refcount(2)
func($data);
//ob_start(); debug_zval_dump($data[1]['k']); echo explode("\n", ob_get_clean())[0]."\n"; // refcount(3)
array_replace_recursive($data[0], $data[1]);
echo json_encode($data);

Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.6 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: [{"k":[0]},{"k":[1]}]
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 [{"k":[0]},{"k":[1]}]
Output for 7.0.0 - 7.0.5: [{"k":[1]},{"k":[1]}]

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