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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 |
---|---|
192 | // Set up the $menu_item variables |
193 | _wp_menu_item_classes_by_context( $menu_items ); |
194 |
|
195 | $sorted_menu_items = array(); |
196 | foreach ( (array) $menu_items as $key => $menu_item ) |
197 | $sorted_menu_items[$menu_item->menu_order] = $menu_item; |
198 |
|
199 | unset($menu_items); |
200 |
|
201 | $sorted_menu_items = apply_filters( 'wp_nav_menu_objects', $sorted_menu_items, $args ); |
202 |
|
203 | $items .= walk_nav_menu_tree( $sorted_menu_items, $args->depth, $args ); |
204 | unset($sorted_menu_items); |
205 |
|
206 | // Attributes |
207 | if ( ! empty( $args->menu_id ) ) { |
208 | $wrap_id = $args->menu_id; |
209 | } else { |
210 | $wrap_id = 'menu-' . $menu->slug; |