diff --git a/TODO b/TODO
index 98c3492e937..084f63529de 100644
--- a/TODO
+++ b/TODO
@@ -73,7 +73,19 @@ ext/standard
 ------------
     * add a version number to data serialized via serialize().
     * array_add(), array_uniq(). (Andrei)
-    * implement pathinfo() (what the heck is it?)
+    * implement pathinfo()
+		$a = pathinfo("/some/file.bla");
+
+		=> array("dirname" => "/some/",
+				"basename" => "file.bla",
+				"extension" => "bla");
+
+
+		We could also make it return just one part as a sting if used
+		like this:
+
+		$a = pathinfo("/some/file.bla", PATHINFO_BASENAME);
+
     * possibly modify parsing of GPC data to automatically create arrays if
       variable name is seen more than once.
     * implement regex-cache for url-functions.