Icon Menu Walker

<?php


// Milton is a Menu Walker
// Yes that's a lame TWD pun
    class Description_Walker extends Walker_Nav_Menu
    {
        /**
         * Start the element output.
         *
         * @param  string $output Passed by reference. Used to append additional content.
         * @param  object $item   Menu item data object.
         * @param  int $depth     Depth of menu item. May be used for padding.
         * @param  array $args    Additional strings.
         * @return void
         */
        function start_el(&$output, $item, $depth, $args)
        {
            $classes     = empty ( $item->classes ) ? array () : (array) $item->classes;

            $class_names = join(
                ' '
            ,   apply_filters(
                    'nav_menu_css_class'
                ,   array_filter( $classes ), $item
                )
            );

            ! empty ( $class_names )
                and $class_names = ' class="'. esc_attr( $class_names ) . '"';

            $output .= "<li id='menu-item-$item->ID' $class_names>";

            $attributes  = '';

            ! empty( $item->attr_title )
                and $attributes .= ' title="'  . esc_attr( $item->attr_title ) .'"';
            ! empty( $item->target )
                and $attributes .= ' target="' . esc_attr( $item->target     ) .'"';
            ! empty( $item->xfn )
                and $attributes .= ' rel="'    . esc_attr( $item->xfn        ) .'"';
            ! empty( $item->url )
                and $attributes .= ' href="'   . esc_attr( $item->url        ) .'"';

            // insert description for top level elements only
            // you may change this
            $description = ( ! empty ( $item->description ) and 0 == $depth )
                ? '<span class="nav_desc">' . esc_attr( $item->description ) . '</span>' : '';

            //Insert Icons when added
            $custom = ( ! empty ( $item->custom )and 0 == $depth  )
                ? '<i class="' . esc_attr( $item->custom ) . '"></i><br><span class="assistive-text">' . esc_attr( $item->attr_title ). '</span>': '';

            $title = apply_filters( 'the_title', $item->title, $item->ID );

            $item_output = $args->before
                . "<a $attributes>"
                . $args->link_before
                . $custom
                . '<div class="text"> '
                . $title
                . $description
                . '</div> '
                . '</a> '
                . $args->link_after
                . $args->after;

            // Since $output is called by reference we don't need to return anything.
            $output .= apply_filters(
                'walker_nav_menu_start_el'
            ,   $item_output
            ,   $item
            ,   $depth
            ,   $args
            );
        }
    }

?>