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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 |
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517 | * |
518 | * @since 4.4.0 |
519 | * |
520 | * @see wp_update_nav_menu_item() |
521 | * |
522 | * @param int $menu_id ID of the updated menu. |
523 | * @param int $menu_item_db_id ID of the new menu item. |
524 | * @param array $args An array of arguments used to update/add the menu item. |
525 | */ |
526 | do_action( 'wp_add_nav_menu_item', $menu_id, $menu_item_db_id, $args ); |
527 | } |
528 |
|
529 | // Associate the menu item with the menu term |
530 | // Only set the menu term if it isn't set to avoid unnecessary wp_get_object_terms() |
531 | if ( $menu_id && ( ! $update || ! is_object_in_term( $menu_item_db_id, 'nav_menu', (int) $menu->term_id ) ) ) { |
532 | wp_set_object_terms( $menu_item_db_id, array( $menu->term_id ), 'nav_menu' ); |
533 | } |
534 |
|
535 | if ( 'custom' == $args['menu-item-type'] ) { |