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-rw-r--r--user_guide/libraries/sessions.html3
1 files changed, 3 insertions, 0 deletions
diff --git a/user_guide/libraries/sessions.html b/user_guide/libraries/sessions.html
index 9a2ca939c..7dc386fd4 100644
--- a/user_guide/libraries/sessions.html
+++ b/user_guide/libraries/sessions.html
@@ -68,6 +68,9 @@ use the database option you'll need to create the session table as indicated bel
<p class="important"><strong>Note:</strong> The Session class does <strong>not</strong> utilize native PHP sessions. It
generates its own session data, offering more flexibility for developers.</p>
+<p class="important"><strong>Note:</strong> Even if you are not using encrypted sessions, you must set
+an encryption key in your config file which is used to aid in preventing session data manipulation.</p>
+
<h2>Initializing a Session</h2>
<p>Sessions will typically run globally with each page load, so the session class must either be