make Settings countable

src/Settings.php

@@ -26,7 +26,7 @@ namespace rabe\Util;
  * Settings Class to read Configuration Files
  * @author Norbert.e.Wagner dev@norb.me
  */
-class Settings implements \Iterator
+class Settings implements \Iterator, \Countable
 {
 	private const SITE = 0x01;
 	
@@ -314,6 +314,17 @@ class Settings implements \Iterator
 
 	// }}}
 
+	// Countable {{{
+	/**
+	 * Count elements
+	 * @link https://www.php.net/countable.count.php
+	 */
+	public function count()
+	{
+		count($this->settings);
+	}
+	// }}}
+	
 	// Magic getter/setter methods {{{
 	public function __set( $name, $value )
 	{