Over Viewing the Interface - Mastering phpMyAdmin 3.4 for Effective MySQL Management - page 63

A drawback of using this method is that our settings are only available when we are
using this browser; moreover, if our browser's settings do not follow us when we
change workstations, the settings are tied to this specific workstation (and apply to
any other user running phpMyAdmin on it).
Changing settings
Upon entering a sub-page for specific preferences—in this case, the Main frame sub-
page, we see a third level of menus related to this subject:
If a preference has been changed from its default value, the checkbox or data field
has a different background color and a recycle icon is shown next to it, to quickly
reset this preference to its default value. Quick explanations are given for each
directive and links point to the documentation and the official wiki. As a general
advice, we need to save any change we make on a page before changing to a
different sub-page; however, in this example, we can switch from Startup to other
third-level menus such as Browse mode and back without losing our changes.
Disallowing specific preferences
The person in charge of config.inc.php has the last word about which settings
are changeable in the user preferences. To disallow some settings, we use the
$cfg['UserprefsDisallow'] directive. We place into it an array containing the
keys in $cfg that represent the directives to disallow. As an example, we set this
directive to:
$cfg['UserprefsDisallow'] = array('AjaxEnable', 'MaxDbList');