WooCommerce - Shopping cart redirect to checkout

woocommerce-shopping-cart-redirect-to-checkout.php

add_action( 'template_redirect', function() {
  
// Replace "cart"  and "checkout" with cart and checkout page slug if needed
    if ( is_page( 'cart' ) ) {
        wp_redirect( '/checkout/' );
        die();
    }
} );

add_action( 'template_redirect', 'redirect_empty_checkout' );
 
function redirect_empty_checkout() {
    if ( is_checkout() && 0 == WC()->cart->get_cart_contents_count() && ! is_wc_endpoint_url( 'order-pay' ) && ! is_wc_endpoint_url( 'order-received' ) ) {
	  
	  // Replace "shop" with your Shop page slug if needed
   wp_safe_redirect( get_permalink( woocommerce_get_page_id( 'shop' ) ) ); 
        exit;
    }
}