public function can_view_user_preferences($userid) {
        if (is_siteadmin()) {
            return true;
        }
        // See if any nodes are present in the preferences section for this user.
        $preferencenode = $this->find('userviewingsettings' . $userid, null);
        if ($preferencenode && $preferencenode->has_children()) {
            // Run through each child node.
            foreach ($preferencenode->children as $childnode) {
                // If the child node has children then this user has access to a link in the preferences page.
                if ($childnode->has_children()) {
                    return true;
                }
            }
        }
        // No links found for the user to access on the preferences page.
        return false;
    }
public function can_view_user_preferences($userid) {
        if (is_siteadmin()) {
            return true;
        }
        // See if any nodes are present in the preferences section for this user.
        $preferencenode = $this->find('userviewingsettings' . $userid, null);
        if ($preferencenode && $preferencenode->has_children()) {
            // Run through each child node.
            foreach ($preferencenode->children as $childnode) {
                // If the child node has children then this user has access to a link in the preferences page.
                if ($childnode->has_children()) {
                    return true;
                }
            }
        }
        // No links found for the user to access on the preferences page.
        return false;
    }
public function can_view_user_preferences ( $ userid ) { if ( is_siteadmin ( ) ) { return true ; } // See if any nodes are present in the preferences section for this user. $ preferencenode = $ this -> find ( 'userviewingsettings' . $ userid , null ) ; if ( $ preferencenode && $ preferencenode -> has_children ( ) ) { // Run through each child node. foreach ( $ preferencenode -> children as $ childnode ) { // If the child node has children then this user has access to a link in the preferences page. if ( $ childnode -> has_children ( ) ) { return true ; } } } // No links found for the user to access on the preferences page. return false ; }
Checks to see if there are child nodes available in the specific user's preference node.
If so, then they have the appropriate permissions view this user's preferences.

@since Moodle 2.9.3
@param int $userid The user's ID.
@return bool True if child nodes exist to view, otherwise false.
Checks to see if there are child nodes available in the specific user s preference node . If so then they have the appropriate permissions view this user s preferences .