PHP add_menu_classes函数代码示例

        $a = $a[2];
        $b = $b[2];
        if (isset($menu_order[$a]) && !isset($menu_order[$b])) {
            return -1;
        } elseif (!isset($menu_order[$a]) && isset($menu_order[$b])) {
            return 1;
        } elseif (isset($menu_order[$a]) && isset($menu_order[$b])) {
            if ($menu_order[$a] == $menu_order[$b]) {
                return 0;
            }
            return $menu_order[$a] < $menu_order[$b] ? -1 : 1;
        } else {
            return $default_menu_order[$a] <= $default_menu_order[$b] ? -1 : 1;
        }
    }
    usort($menu, 'sort_menu');
    unset($menu_order, $default_menu_order);
}
// Remove the last menu item if it is a separator.
$last_menu_key = array_keys($menu);
$last_menu_key = array_pop($last_menu_key);
if (!empty($menu) && 'wp-menu-separator' == $menu[$last_menu_key][4]) {
    unset($menu[$last_menu_key]);
}
unset($last_menu_key);
if (!user_can_access_admin_page()) {
    do_action('admin_page_access_denied');
    wp_die(__('You do not have sufficient permissions to access this page.'));
}
$menu = add_menu_classes($menu);

 /**
  * Filter a menu so that it can be handed to _wp_menu_output(). This method basically
  * emulates the filtering that WordPress does in /wp-admin/includes/menu.php, with a few
  * additions of our own.
  *
  * - Removes inaccessible items and superfluous separators.
  *
  * - Sets accessible items to a capability that the user is guaranteed to have to prevent
  *   _wp_menu_output() from choking on plugin-specific capabilities like "cap1,cap2+not:cap3".
  *
  * - Adds position-dependent CSS classes.
  *
  * @param array $menu
  * @param array $submenu
  * @return array An array with two items - the filtered menu and submenu.
  */
 private function filter_menu($menu, $submenu)
 {
     global $_wp_menu_nopriv;
     //Caution: Modifying this array could lead to unexpected consequences.
     //Remove sub-menus which the user shouldn't be able to access,
     //and ensure the rest are visible.
     foreach ($submenu as $parent => $items) {
         foreach ($items as $index => $data) {
             if (!$this->current_user_can($data[1])) {
                 unset($submenu[$parent][$index]);
                 $_wp_submenu_nopriv[$parent][$data[2]] = true;
             } else {
                 //The menu might be set to some kind of special capability that is only valid
                 //within this plugin and not WP in general. Ensure WP doesn't choke on it.
                 //(This is safe - we'll double-check the caps when the user tries to access a page.)
                 $submenu[$parent][$index][1] = 'exist';
                 //All users have the 'exist' cap.
             }
         }
         if (empty($submenu[$parent])) {
             unset($submenu[$parent]);
         }
     }
     //Remove menus that have no accessible sub-menus and require privileges that the user does not have.
     //Ensure the rest are visible. Run re-parent loop again.
     foreach ($menu as $id => $data) {
         if (!$this->current_user_can($data[1])) {
             $_wp_menu_nopriv[$data[2]] = true;
         } else {
             $menu[$id][1] = 'exist';
         }
         //If there is only one submenu and it is has same destination as the parent,
         //remove the submenu.
         if (!empty($submenu[$data[2]]) && 1 == count($submenu[$data[2]])) {
             $subs = $submenu[$data[2]];
             $first_sub = array_shift($subs);
             if ($data[2] == $first_sub[2]) {
                 unset($submenu[$data[2]]);
             }
         }
         //If submenu is empty...
         if (empty($submenu[$data[2]])) {
             // And user doesn't have privs, remove menu.
             if (isset($_wp_menu_nopriv[$data[2]])) {
                 unset($menu[$id]);
             }
         }
     }
     unset($id, $data, $subs, $first_sub);
     //Remove any duplicated separators
     $separator_found = false;
     foreach ($menu as $id => $data) {
         if (0 == strcmp('wp-menu-separator', $data[4])) {
             if ($separator_found) {
                 unset($menu[$id]);
             }
             $separator_found = true;
         } else {
             $separator_found = false;
         }
     }
     unset($id, $data);
     //Remove the last menu item if it is a separator.
     $last_menu_key = array_keys($menu);
     $last_menu_key = array_pop($last_menu_key);
     if (!empty($menu) && 'wp-menu-separator' == $menu[$last_menu_key][4]) {
         unset($menu[$last_menu_key]);
     }
     unset($last_menu_key);
     //Add display-specific classes like "menu-top-first" and others.
     $menu = add_menu_classes($menu);
     return array($menu, $submenu);
 }