name : ProxyArrayAccessToProperties.php <?php declare(strict_types=1); namespace League\Flysystem; use RuntimeException; /** * @internal */ trait ProxyArrayAccessToProperties { private function formatPropertyName(string $offset): string { return str_replace('_', '', lcfirst(ucwords($offset, '_'))); } /** * @param mixed $offset * * @return bool */ public function offsetExists($offset): bool { $property = $this->formatPropertyName((string) $offset); return isset($this->{$property}); } /** * @param mixed $offset * * @return mixed */ #[\ReturnTypeWillChange] public function offsetGet($offset) { $property = $this->formatPropertyName((string) $offset); return $this->{$property}; } /** * @param mixed $offset * @param mixed $value */ #[\ReturnTypeWillChange] public function offsetSet($offset, $value): void { throw new RuntimeException('Properties can not be manipulated'); } /** * @param mixed $offset */ #[\ReturnTypeWillChange] public function offsetUnset($offset): void { throw new RuntimeException('Properties can not be manipulated'); } }