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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 |
|---|---|
| 219 | else |
| 220 | $wrap_id = $wrap_id . '-1'; |
| 221 | } |
| 222 | } |
| 223 | $menu_id_slugs[] = $wrap_id; |
| 224 | |
| 225 | $wrap_class = $args->menu_class ? $args->menu_class : ''; |
| 226 | |
| 227 | // Allow plugins to hook into the menu to add their own <li>'s |
| 228 | $items = apply_filters( 'wp_nav_menu_items', $items, $args ); |
| 229 | $items = apply_filters( "wp_nav_menu_{$menu->slug}_items", $items, $args ); |
| 230 | |
| 231 | $nav_menu .= sprintf( $args->items_wrap, esc_attr( $wrap_id ), esc_attr( $wrap_class ), $items ); |
| 232 | unset( $items ); |
| 233 | |
| 234 | if ( $show_container ) |
| 235 | $nav_menu .= '</' . $args->container . '>'; |
| 236 | |
| 237 | $nav_menu = apply_filters( 'wp_nav_menu', $nav_menu, $args ); |