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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.
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72 | * An array of arguments passed to wp_nav_menu() to retrieve a navigation menu. |
73 | * |
74 | * @type callable|bool $fallback_cb Callback to fire if the menu doesn't exist. Default empty. |
75 | * @type mixed $menu Menu ID, slug, or name. |
76 | * } |
77 | * @param WP_Term $nav_menu Nav menu object for the current menu. |
78 | * @param array $args Display arguments for the current widget. |
79 | * @param array $instance Array of settings for the current widget. |
80 | */ |
81 | wp_nav_menu( apply_filters( 'widget_nav_menu_args', $nav_menu_args, $nav_menu, $args, $instance ) ); |
82 |
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83 | echo $args['after_widget']; |
84 | } |
85 |
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86 | /** |
87 | * Handles updating settings for the current Navigation Menu widget instance. |
88 | * |
89 | * @since 3.0.0 |
90 | * |