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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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374 | if ( false !== ( $key = array_search( $nav_menu_selected_id, $nav_menu_option['auto_add'] ) ) ) |
375 | unset( $nav_menu_option['auto_add'][$key] ); |
376 | } |
377 | // Remove nonexistent/deleted menus |
378 | $nav_menu_option['auto_add'] = array_intersect( $nav_menu_option['auto_add'], wp_get_nav_menus( array( 'fields' => 'ids' ) ) ); |
379 | update_option( 'nav_menu_options', $nav_menu_option ); |
380 |
|
381 | wp_defer_term_counting(false); |
382 |
|
383 | do_action( 'wp_update_nav_menu', $nav_menu_selected_id ); |
384 |
|
385 | $messages[] = '<div id="message" class="updated"><p>' . sprintf( __('The <strong>%s</strong> menu has been updated.'), $nav_menu_selected_title ) . '</p></div>'; |
386 | unset( $menu_items, $unsorted_menu_items ); |
387 | } |
388 | } |
389 | break; |
390 | } |
391 |
|
392 | // Get all nav menus |