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WP_Nav_Menu_Widget::update( array $new_instance, array $old_instance )

Handles updating settings for the current Navigation Menu widget instance.

Parameters

$new_instance

(array) (Required) New settings for this instance as input by the user via WP_Widget::form().

$old_instance

(array) (Required) Old settings for this instance.

Return

(array) Updated settings to save.

Source

File: wp-includes/widgets/class-wp-nav-menu-widget.php 

public function update( $new_instance, $old_instance ) {
		$instance = array();
		if ( ! empty( $new_instance['title'] ) ) {
			$instance['title'] = sanitize_text_field( $new_instance['title'] );
		}
		if ( ! empty( $new_instance['nav_menu'] ) ) {
			$instance['nav_menu'] = (int) $new_instance['nav_menu'];
		}
		return $instance;
	}

Uses

Uses Description
wp-includes/formatting.php: sanitize_text_field()

Sanitizes a string from user input or from the database.

Changelog

Version Description
3.0.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/wp_nav_menu_widget/update