Box\Spout\Reader\AbstractReader::isStreamWrapper PHP Метод

isStreamWrapper() защищенный Метод

..).
protected isStreamWrapper ( string $filePath ) : boolean
$filePath string Path of the file to be read
Результат boolean Whether the given path is an unsupported stream wrapper
    protected function isStreamWrapper($filePath)
    {
        return $this->getStreamWrapperScheme($filePath) !== null;
    }