WordPress at Your Fingertips
filter is not described

woocommerce_checkout_update_order_review_expired filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_checkout_update_order_review_expired', 'filter_function_name_7016' );
function filter_function_name_7016( $true ){
	// filter...

	return $true;
}
$true
-

Where the hook is called

WC_AJAX::update_order_review()
woocommerce_checkout_update_order_review_expired
woocommerce/includes/class-wc-ajax.php 297
if ( WC()->cart->is_empty() && ! is_customize_preview() && apply_filters( 'woocommerce_checkout_update_order_review_expired', true ) ) {

Where in WP core the hook is used WooCommerce

Usage not found.