Do more action after login successfully

Question

I have a simple requirement, after user login set the login user session and then redirect to another page.

Yes, I found some similar page from here is-there-a-hook-that-runs-after-a-user-logs-in

As the post said, what I need to do is like this:

function set_blog_session(){
    $_SESSION['blogger'] = get_current_user_id();
    wp_redirect("http://www.google.com");//just for test
}
add_action('wp_login', 'set_blog_session');

But I got nothing.

First, get_current-user_id() always returns 0.
Second, no redirect at all.

Whats going wrong?

Answer 1

You should use exit after using the wp_redirect():

From the Codex:

wp_redirect() does not exit automatically and should almost always be followed by exit.

---

For your hook, you could pass a parameter in your callback function to get the user login and then use get_user_by() to get the ID.

function set_blog_session($user_login){
    $user_obj = get_user_by('login', $user_login );
    $_SESSION['blogger'] = $user_obj->ID;

    wp_redirect("http://www.google.com");
    exit;
}
add_action('wp_login', 'set_blog_session');