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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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1061 | unset( $nav_menu_option['auto_add'][$key] ); |
1062 | } |
1063 | // Remove nonexistent/deleted menus |
1064 | $nav_menu_option['auto_add'] = array_intersect( $nav_menu_option['auto_add'], wp_get_nav_menus( array( 'fields' => 'ids' ) ) ); |
1065 | update_option( 'nav_menu_options', $nav_menu_option ); |
1066 |
|
1067 | wp_defer_term_counting( false ); |
1068 |
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1069 | /** This action is documented in wp-includes/nav-menu.php */ |
1070 | do_action( 'wp_update_nav_menu', $nav_menu_selected_id ); |
1071 |
|
1072 | $messages[] = '<div id="message" class="updated notice is-dismissible"><p>' . |
1073 | /* translators: %s: nav menu title */ |
1074 | sprintf( __( '%s has been updated.' ), |
1075 | '<strong>' . $nav_menu_selected_title . '</strong>' |
1076 | ) . '</p></div>'; |
1077 |
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1078 | unset( $menu_items, $unsorted_menu_items ); |
1079 |
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