How to redirect to different admin page in WordPress?

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I am writing a WordPress plugin.

I want to perform a redirect (after creating DB records from POST data, etc…) to other ADMIN page.

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Neither header(“Location: …) nor wp_redirect() work – i get

Warning: Cannot modify header information – headers already sent by

which comes from obvious reason.

How do I properly perform a redirect in a WordPress?

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7 comments

  1. On your form action, add ‘noheader=true’ to the action URL. This will prevent the headers for the admin area from being outputted before your redirect. For example:

    <form name="post" action="<?php echo admin_url('admin.php?page=your-admin-page&noheader=true'); ?>" method="post" id="post">

  2. If you still want to redirect from your plugin admin page to another admin page while using WP add_page* functions then, after processing your request, you can just echo something like this:

    <script type="text/javascript">
window.location = '/whatever_page.php';
</script>

    This just renders a javascript based redirect to “/whatever_page.php” thus ensuring no trouble with headers already sent by WP as Chris Ballance already said.

    Change “/whatever_page.php” to something like “/wp-admin/admin.php?page=whatever_page”

  3. For a link added with add_submenu_page (or related function), use the returned $hook_suffix to add an action to “load-$hook_suffix” and do the redirect there. This is how you hook to the page load before the output has begun.

  4. I think I was doing it the wrong way.

    My code was inside a add_menu_page() inside
    add_action(‘admin_menu’, …) call

    which is probably called later during the request (after page header has been created and displayed).

    Moving my code outside of my plugin handles, into main scope worked – it needs some cleanup, and fixes, but redirect works.

    Anyway, thanks for the answers.

  6. You need to make sure that nothing is sent to http output before the redirect takes place.

    You can set “window.location(‘newlocation’);” and that will still let you redirect after output has been sent to the browser.

  7. Load it into template_redirect.

    add_action('template_redirect', 'myplugin_template_redirect');

function myplugin_template_redirect() {  
   wp_redirect('http://www.example.com/', 301);
}