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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 |
|---|---|
| 221 | * Filters a menu item's title. |
| 222 | * |
| 223 | * @since 4.4.0 |
| 224 | * |
| 225 | * @param string $title The menu item's title. |
| 226 | * @param WP_Post $menu_item The current menu item object. |
| 227 | * @param stdClass $args An object of wp_nav_menu() arguments. |
| 228 | * @param int $depth Depth of menu item. Used for padding. |
| 229 | */ |
| 230 | $title = apply_filters( 'nav_menu_item_title', $title, $menu_item, $args, $depth ); |
| 231 | |
| 232 | $item_output = $args->before; |
| 233 | $item_output .= '<a' . $attributes . '>'; |
| 234 | $item_output .= $args->link_before . $title . $args->link_after; |
| 235 | $item_output .= '</a>'; |
| 236 | $item_output .= $args->after; |
| 237 | |
| 238 | /** |
| 239 | * Filters a menu item's starting output. |