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@ 2025-12-09T23:12:34Z

<?php

$array = [
    "0" => 'Zero',
    'foo' => 'Foo',
    1 => 'One',
];

var_dump(
    array_key_exists(0, $array),
    array_key_exists("0", $array),
    array_key_exists(1, $array),
    array_key_exists("1", $array),
);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)

preferences:dark modelive previewkey bindings

35.23 ms | 404 KiB | 5 Q