I am working on a checkout proces in Wordpress where if customer clicks on the checkout button he gets redirected to a payment provider.

Important to know:

  • I use a session in this proces.
  • I use PHP header() function to sent the customer to this location.

My problem: Now when you click the button, there is no redirect, but an error instead.

Warning: Cannot modify header information - headers already sent by (output started at /var/www/vhosts/website.com/httpdocs/wp-content/themes/template/header.php:24) in /var/www/vhosts/website.com/httpdocs/wp-content/themes/template/page-checkout.php on line 84

Line 84 is:

header( "Location: " . $payment->getPaymentUrl() );

So it looks like I need to do the redirect earlier, but I don't know how to do it. Has anyone any idea? Hook the init or send_headers action?

I have one solution at the moment which solves the problem, but I know that it is not the right one. The solution is placing ob_start() in the top of my header.php

  • Where is your code? Please post it in context. – s_ha_dum May 20 '14 at 15:10

I had to do it with WordPress's inbuilt redirect function; wp_redirect();

wp_redirect( $payment->getPaymentUrl() );

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.