PHP：保留array_values的顺序

Question

If I have an associative array that is structured like

(
    1 => 'a',
    2 => 'b',
    0 => 'c'
)

where all of the keys are numeric, will array_values ALWAYS guarantee that the values occur chronologically, in the new array, based on their previous keys' values, i.e. ['c', 'a', 'b']?

If not, how can I accomplish this instead?

Answer 1

No, array_values() will not reorder the values in any way. It doesn't care about keys.

Its effective implementation is basically this:

function array_values_impl(array $array)
{
    $newArray = [];

    foreach ($array as $item) {
        $newArray[] = $item;
    }

    return $newArray;
}

If you want to sort the array using the keys, use ksort().