/* Admin Settings Page Warning */
add_action( 'admin_notices', 'my_admin_notice' );
function my_admin_notice(){
     global $current_screen; ?> <div>
     <?php if ( $current_screen->parent_base == 'options-general' )
          echo '<div style="background-color:lightYellow;padding:10px;margin-top:20px;border-width:1px;border-style: solid;border-color:#E6DB55;padding: 0 .6em;margin: 5px 15px 2px;-moz-border-radius: 3px;-khtml-border-radius: 3px;-webkit-border-radius: 3px;border-radius: 3px;"><p>Warning - changing settings on these pages may cause problems with your website\'s design!</p></div>';
}

/* Admin Settings Page Warning */
add_action( 'admin_notices', 'my_admin_notice' );
function my_admin_notice(){
     global $current_screen; ?> <div>
     <?php if ( $current_screen->parent_base == 'options-general' )
          echo '<div style="background-color:lightYellow;border-color:1px solid #E6DB55;padding:10px;margin-top:20px;"><p>Warning - changing settings on these pages may cause problems with your website\'s design!</p></div>';
}

/* Admin Settings Page Warning */
add_action( 'admin_notices', 'my_admin_notice' );
function my_admin_notice(){
     global $current_screen; ?> <div>
     <?php if ( $current_screen->parent_base == 'options-general' )
          echo '<div style="background:#fbf9ca;padding:10px;"><p>Warning - changing settings on these pages may cause problems with your website\'s design!</p></div>';
}

/* Admin Settings Page Warning */
add_action( 'admin_notices', 'my_admin_notice' );
function my_admin_notice(){
     global $current_screen; ?> <div>
     <?php if ( $current_screen->parent_base == 'options-general' )
          echo '<div style="background:#fbf9ca;padding:10px;"><p>Warning - changing settings on these pages may cause problems with your website\'s design!</p></div>';
}

/* Custom news feed on the dashboard */
add_action('wp_dashboard_setup', 'my_dashboard_widgets');
function my_dashboard_widgets() {
     global $wp_meta_boxes;
     // remove unnecessary widgets
     // var_dump( $wp_meta_boxes['dashboard'] ); // use to get all the widget IDs
     unset(
          $wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins'],
          $wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary'],
          $wp_meta_boxes['dashboard']['side']['core']['dashboard_primary']
     );
     // add a custom dashboard widget
     wp_add_dashboard_widget( 'dashboard_custom_feed', 'News from The Wall Street Journal', 'dashboard_custom_feed_output' ); //add new RSS feed output
}
function dashboard_custom_feed_output() {
     echo '<div class="rss-widget">';
     wp_widget_rss_output(array(
          'url' => 'http://online.wsj.com/xml/rss/3_7011.xml',
          'title' => 'What\'s up at 10up',
          'items' => 2,
          'show_summary' => 1,
          'show_author' => 0,
          'show_date' => 1,
     ));
     echo "</div>";
}

add_action( 'admin_notices', 'my_admin_notice' );
function my_admin_notice(){
     global $current_screen; ?> <div>
     <?php if ( $current_screen->parent_base == 'options-general' )
          echo '<div><p>Warning - changing settings on these pages may cause problems with your website\'s design!</p></div>';
}

http://www.smashingmagazine.com/2011/05/10/new-wordpress-power-tips-for-template-developers-and-consultants/

Clients often expect full administrative access (and rightly so), including access to settings pages. Let’s look at how we can hook admin “notices” (those warning boxes generated by some plug-ins) to send some warnings to administrative users when they are on settings pages.

Admin Warning Notice

wordpress

PHP