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<?php
namespace Smoren\ArrayView;
use Smoren\ArrayView\Exceptions\IndexError;
class Util
{
public static function normalizeIndex(int $index, int $containerLength, bool $throwError = true): int
$dist = $index >= 0 ? $index : abs($index) - 1;
if ($throwError && $dist >= $containerLength) {
throw new IndexError("Index {$index} is out of range.");
}
return $index < 0 ? $containerLength + $index : $index;
public static function isArraySequential(array $source): bool
if (!function_exists('array_is_list')) {
return array_keys($source) === range(0, count($source) - 1);
return array_is_list($source);
Smoren /
array-view-php
