Helper::checkQuota

static function checkQuota($requiredFreeSpace = 0)
{
	$compositeOptions = self::getOptions();
	$cacheQuota = doubleval($compositeOptions["~FILE_QUOTA"]);

	$cacheSize = self::getCacheFileSize();
	$cacheSize = $cacheSize !== false ? $cacheSize : 0.0;

	return ($cacheSize + doubleval($requiredFreeSpace)) < $cacheQuota;
}