[ci skip] Clarify get_cookie(), CI_Input::cookie() docs
Close #3527
Close #3528
diff --git a/user_guide_src/source/libraries/input.rst b/user_guide_src/source/libraries/input.rst
index 4464e0f..3bc0967 100644
--- a/user_guide_src/source/libraries/input.rst
+++ b/user_guide_src/source/libraries/input.rst
@@ -237,6 +237,10 @@
$this->input->cookie(array('some_cookie', 'some_cookie2'));
+ .. note:: Unlike the :doc:`Cookie Helper <../helpers/cookie_helper>`
+ function :func:`get_cookie()`, this method does NOT prepend
+ your configured ``$config['cookie_prefix']`` value.
+
.. method:: server($index[, $xss_clean = NULL])
:param mixed $index: Value name