On 21 May 2010 10:56, <cr.vege...@gmail.com> wrote:
> How do I update an array key without disturbing the element order ?
> Suppose an existing array("FR", values ...)
> where I want to change 0 => "FR" to "country" => "FR"
> and keep the original element order.
>
> TIA, Cor
>
Something like ...
function arrayKeyChange(array &$array, $oldKey, $newKey) {
if (!array_key_exists($oldKey, $array)) {
trigger_error('Requested key does not exist.', E_USER_WARNING);
return False;
}
if (array_key_exists($oldKey, $array) && array_key_exists($newKey,
$array)) {
trigger_error('Will result in duplicate keys.', E_USER_WARNING);
return False;
}
// Split keys/values
$keys = array_keys($array);
$values = array_values($array);
// Find position of oldKey
$oldKeyPos = array_search($oldKey, $keys, True);
// Replace key
$keys[$oldKeyPos] = $newKey;
// Combine keys/values
$array = array_combine($keys, $values);
return True;
}
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