Code-Snippets-Functions/Execute a function on a child site/WooCommerce/retain-checkout-fields-reload.txt

add_action( 'woocommerce_checkout_update_order_review', 'wc_save_checkout_values', 9999 );
 
function wc_save_checkout_values( $posted_data ) {
    parse_str( $posted_data, $output );
    WC()->session->set( 'checkout_data', $output );
    return $posted_data;
}
 
add_filter( 'woocommerce_checkout_get_value', 'wc_get_saved_checkout', 9999, 2 );
 
function wc_get_saved_checkout( $value, $index ) {
    $data = WC()->session->get( 'checkout_data' );
    if ( ! $data || empty( $data[$index] ) ) return $value;
    return is_bool( $data[$index] ) ? (int) $data[$index] : $data[$index];
}
 
add_filter( 'woocommerce_ship_to_different_address_checked', 'wc_get_saved_ship_to_different' );
 
function wc_get_saved_ship_to_different( $checked ) {
    $data = WC()->session->get( 'checkout_data' );
    if ( ! $data || empty( $data['ship_to_different_address'] ) ) return $checked;
    return true;
}