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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 |
|---|---|
| 209 | } |
| 210 | } |
| 211 | $menu_id_slugs[] = $slug; |
| 212 | $attributes = ' id="' . $slug . '"'; |
| 213 | $attributes .= $args->menu_class ? ' class="'. $args->menu_class .'"' : ''; |
| 214 | |
| 215 | $nav_menu .= '<ul'. $attributes .'>'; |
| 216 | |
| 217 | // Allow plugins to hook into the menu to add their own <li>'s |
| 218 | $items = apply_filters( 'wp_nav_menu_items', $items, $args ); |
| 219 | $items = apply_filters( "wp_nav_menu_{$menu->slug}_items", $items, $args ); |
| 220 | $nav_menu .= $items; |
| 221 | unset($items); |
| 222 | |
| 223 | $nav_menu .= '</ul>'; |
| 224 | |
| 225 | if ( $show_container ) |
| 226 | $nav_menu .= '</' . $args->container . '>'; |
| 227 | |