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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 84 | * |
| 85 | * @param array $atts { |
| 86 | * The HTML attributes applied to the `<ul>` element, empty strings are ignored. |
| 87 | * |
| 88 | * @type string $class HTML CSS class attribute. |
| 89 | * } |
| 90 | * @param stdClass $args An object of `wp_nav_menu()` arguments. |
| 91 | * @param int $depth Depth of menu item. Used for padding. |
| 92 | */ |
| 93 | $atts = apply_filters( 'nav_menu_submenu_attributes', $atts, $args, $depth ); |
| 94 | $attributes = $this->build_atts( $atts ); |
| 95 | |
| 96 | $output .= "{$n}{$indent}<ul{$attributes}>{$n}"; |
| 97 | } |
| 98 | |
| 99 | /** |
| 100 | * Ends the list of after the elements are added. |
| 101 | * |
| 102 | * @since 3.0.0 |