+ /**
+ * Filter the arguments for a single nav menu item.
+ *
+ * @since 4.4.0
+ *
+ * @param array $args An array of arguments.
+ * @param object $item Menu item data object.
+ * @param int $depth Depth of menu item. Used for padding.
+ */
+ $args = apply_filters( 'nav_menu_item_args', $args, $item, $depth );
+
+ /**
+ * Filter the CSS class(es) applied to a menu item's list item element.
+ *
+ * @since 3.0.0
+ * @since 4.1.0 The `$depth` parameter was added.
+ *
+ * @param array $classes The CSS classes that are applied to the menu item's `<li>` element.
+ * @param object $item The current menu item.
+ * @param array $args An array of {@see wp_nav_menu()} arguments.
+ * @param int $depth Depth of menu item. Used for padding.
+ */
+ $class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args, $depth ) );
+ $class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';
+
+ /**
+ * Filter the ID applied to a menu item's list item element.
+ *
+ * @since 3.0.1
+ * @since 4.1.0 The `$depth` parameter was added.
+ *
+ * @param string $menu_id The ID that is applied to the menu item's `<li>` element.
+ * @param object $item The current menu item.
+ * @param array $args An array of {@see wp_nav_menu()} arguments.
+ * @param int $depth Depth of menu item. Used for padding.
+ */
+ $id = apply_filters( 'nav_menu_item_id', 'menu-item-'. $item->ID, $item, $args, $depth );
+ $id = $id ? ' id="' . esc_attr( $id ) . '"' : '';
+
+ $output .= $indent . '<li' . $id . $class_names .'>';
+
+ $atts = array();
+ $atts['title'] = ! empty( $item->attr_title ) ? $item->attr_title : '';
+ $atts['target'] = ! empty( $item->target ) ? $item->target : '';
+ $atts['rel'] = ! empty( $item->xfn ) ? $item->xfn : '';
+ $atts['href'] = ! empty( $item->url ) ? $item->url : '';
+
+ /**
+ * Filter the HTML attributes applied to a menu item's anchor element.
+ *
+ * @since 3.6.0
+ * @since 4.1.0 The `$depth` parameter was added.
+ *
+ * @param array $atts {
+ * The HTML attributes applied to the menu item's `<a>` element, empty strings are ignored.
+ *
+ * @type string $title Title attribute.
+ * @type string $target Target attribute.
+ * @type string $rel The rel attribute.
+ * @type string $href The href attribute.
+ * }
+ * @param object $item The current menu item.
+ * @param array $args An array of {@see wp_nav_menu()} arguments.
+ * @param int $depth Depth of menu item. Used for padding.
+ */
+ $atts = apply_filters( 'nav_menu_link_attributes', $atts, $item, $args, $depth );
+
+ $attributes = '';
+ foreach ( $atts as $attr => $value ) {
+ if ( ! empty( $value ) ) {
+ $value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
+ $attributes .= ' ' . $attr . '="' . $value . '"';
+ }
+ }