added missing DB config items from sample array in connecting documentation
diff --git a/user_guide/database/connecting.html b/user_guide/database/connecting.html
index 2da0625..6cdd109 100644
--- a/user_guide/database/connecting.html
+++ b/user_guide/database/connecting.html
@@ -102,6 +102,10 @@
$config['dbprefix'] = "";<br />
$config['pconnect'] = FALSE;<br />
$config['db_debug'] = TRUE;<br />
+$config['cache_on'] = FALSE;<br />
+$config['cachedir'] = "";<br />
+$config['char_set'] = "utf8";<br />
+$config['dbcollat'] = "utf8_general_ci";<br />
<br />
$this->load->database(<samp>$config</samp>);</code>