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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 |
---|---|
231 | * no filter for modifying the opening and closing `<li>` for a menu item. |
232 | * |
233 | * @since 3.0.0 |
234 | * |
235 | * @param string $item_output The menu item's starting HTML output. |
236 | * @param WP_Post $item Menu item data object. |
237 | * @param int $depth Depth of menu item. Used for padding. |
238 | * @param stdClass $args An object of wp_nav_menu() arguments. |
239 | */ |
240 | $output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args ); |
241 | } |
242 |
|
243 | /** |
244 | * Ends the element output, if needed. |
245 | * |
246 | * @since 3.0.0 |
247 | * |
248 | * @see Walker::end_el() |
249 | * |