diff --git a/language/functions.xml b/language/functions.xml
index 70a8e5e184..828bc2df23 100644
--- a/language/functions.xml
+++ b/language/functions.xml
@@ -450,6 +450,13 @@ Making a bowl of acidophilus raspberry.
          </entry>
          <entry>PHP 7.0.0</entry>
         </row>
+        <row>
+         <entry><literal>iterable</literal></entry>
+         <entry>
+          The parameter must be either an <type>array</type> or an &instanceof; <classname>Traversable</classname>.
+         </entry>
+         <entry>PHP 7.1.0</entry>
+        </row>
        </tbody>
       </tgroup>
      </informaltable>