is_really_writable example

break;

                case 'date':
                    $fileInfo['date'] = filemtime($file);
                    break;

                case 'readable':
                    $fileInfo['readable'] = is_readable($file);
                    break;

                case 'writable':
                    $fileInfo['writable'] = is_really_writable($file);
                    break;

                case 'executable':
                    $fileInfo['executable'] = is_executable($file);
                    break;

                case 'fileperms':
                    $fileInfo['fileperms'] = fileperms($file);
                    break;
            }
        }

        

        if (! property_exists($config, 'file')) {
            $config->file = [
                'storePath' => $config->storePath ?? WRITEPATH . 'cache',
                'mode'      => 0640,
            ];
        }

        $this->path = ! empty($config->file['storePath']) ? $config->file['storePath'] : WRITEPATH . 'cache';
        $this->path = rtrim($this->path, '/') . '/';

        if (! is_really_writable($this->path)) {
            throw CacheException::forUnableToWrite($this->path);
        }

        $this->mode   = $config->file['mode'] ?? 0640;
        $this->prefix = $config->prefix;
    }

    /** * {@inheritDoc} */
    public function initialize()
    {