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shadowhand/array_key_polyfill.php

Created January 4, 2016 06:29
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array_key_polyfill.php
<?php
function array_key_first(array $arr)
{
reset($arr);
return key($arr);
}
function array_key_last(array $arr)
{
end($arr);
return key($arr);
}
@sergiors
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sergiors commented Jul 22, 2016 •
edited

maybe

function array_key_first(array $xss)
{
    return [] === $xss
        ? null
        : array_keys(array_slice($xss, 0, 1, true))[0];
}

function array_key_last(array $xss)
{
    return [] === $xss
        ? null
        : array_keys(array_slice($xss, -1, 1, true))[0];
}

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