public function isDeprecated($key, $phpVersion = PHP_VERSION)
	{
		$deprecated = $this->getDeprecated();
		$ini = $this->getConfig();

		// loop through the versions and see if our key is in there
		if (property_exists($deprecated, $key))
		{
			$compare = version_compare($phpVersion, $deprecated->$key);
			if ($compare >= 0 && isset($ini[$key])) {
				$this->markKey($key);
				return true;
			}
		}
		return false;
	}