nav_menu_css_class │ filter-hook │ WP 3.0.0

Filters the CSS classes applied to a menu item's list item element.

Usage

add_filter( 'nav_menu_css_class', 'wp_kama_nav_menu_css_class_filter', 10, 4 );

/**
 * Function for `nav_menu_css_class` filter-hook.
 * 
 * @param string[] $classes   Array of the CSS classes that are applied to the menu item's `<li>` element.
 * @param WP_Post  $menu_item The current menu item object.
 * @param stdClass $args      An object of wp_nav_menu() arguments.
 * @param int      $depth     Depth of menu item. Used for padding.
 *
 * @return string[]
 */
function wp_kama_nav_menu_css_class_filter( $classes, $menu_item, $args, $depth ){

	// filter...
	return $classes;
}

$classes(string[])

Array of the CSS classes that are applied to the menu item's <li> element.

$menu_item(WP_Post)

The current menu item object.

$args(stdClass)

An object of wp_nav_menu() arguments.

$depth(int)

Depth of menu item. Used for padding.

Changelog

Where the hook is called

$class_names = implode( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $menu_item, $args, $depth ) );

Where the hook is used in WordPress

add_filter( 'nav_menu_css_class', 'wp_nav_menu_remove_menu_item_has_children_class', 10, 4 );