$this->binaryFormat = null === $this->binaryFormat ? false : $this->binaryFormat;
} elseif (preg_match('/^(\d++)('.implode('|', array_keys($factors)).')$/i', $maxSize, $matches)) {
$this->maxSize = $matches[1] * $factors[$unit = strtolower($matches[2])];
$this->binaryFormat = null === $this->binaryFormat ? false : $this->binaryFormat;
} elseif (preg_match('/^(\d++)('.implode('|', array_keys($factors)).')$/i', $maxSize, $matches)) {
$this->maxSize = $matches[1] * $factors[$unit = strtolower($matches[2])];