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<?php
declare(strict_types=1);
namespace Spatie\DataTransferObject;
use ArrayAccess;
class Arr
{
public static function only($array, $keys): array
{
return array_intersect_key($array, array_flip((array) $keys));
}
public static function except($array, $keys): array
{
return static::forget($array, $keys);
}
public static function forget($array, $keys): array
{
$keys = (array) $keys;
if (count($keys) === 0) {
return $array;
}
foreach ($keys as $key) {
// If the exact key exists in the top-level, remove it
if (static::exists($array, $key)) {
unset($array[$key]);
continue;
}
$parts = explode('.', $key);
while (count($parts) > 1) {
$part = array_shift($parts);
if (isset($array[$part]) && is_array($array[$part])) {
$array = &$array[$part];
} else {
continue 2;
}
}
unset($array[array_shift($parts)]);
}
return $array;
}
public static function exists($array, $key): bool
{
if ($array instanceof ArrayAccess) {
return $array->offsetExists($key);
}
return array_key_exists($key, $array);
}
}