Woocommerce: How to redirect to a new page from 'process_payment' function?

Question

I'm trying to build a custom payment gateway on Woocommerce. And I'm trying to redirect to a new page for payment page from process_payment.

Is there any proper way to redirect to a page and also I can pass the data I need?

My folder struct:

wp-content
|_ plugins
   |_ my-payment
      |_ redirect_page.php
         wc_my_gateway.php

The process_payment function I have edit so far in wc_my_gateway.php :

public function process_payment($order_id)
{
        global $woocommerce;
        $order = new WC_Order($order_id);
        
        // todo something ...
        
        $redirect_url = plugin_dir_url(__FILE__) . 'redirect_page.php';
        return [
            'result' => 'success', // return success status
            'redirect' => $redirect_url, // web page url to redirect
        ];
}

If there any further information need, please feel free to comment.

Answer 1

Update: The following code is the solution for me. Since I only need to redirect to somewhere for client to process payment, by redirecting to /checkout/order-pay page, I can try to custom what I need for the payment process with my own gateway.

public function process_payment($order_id){

  ...

  return [
     'result' => 'success', // return success status
     'redirect' => apply_filters('process_payment_redirect', $order->get_checkout_payment_url(true), $order), // web page redirect
  ];
}