Also return false for validation if the path is shorter than the root path

snippets/php/path_root_validation.php

@@ -20,6 +20,8 @@ class PathValidator
 		$root_path = $this->ParsePath($root);
 		
 		if($root_path != null)
+		{
+			if($this->RelativeDepth($root) >= 0)
 			{
 				$root_stack = explode("/", $root_path);
 				$path_stack = explode("/", $this->path);
@@ -35,6 +37,11 @@ class PathValidator
 				return true;
 			}
 			else
+			{
+				return false;
+			}
+		}
+		else
 		{
 			throw new Exception("Specified root path is invalid.");
 		}