I want to make all new commenters have a new account without them having to go through any registration process. That way if they use the same details again it will be stored as another comment they made.

I do not want to require them to "register" but instead register them automatically when they put their info into the comment form.

I'm using the default wordpress comment system without any plugins.

How can I make it so users are registered automatically when putting info into comment form to make a comment?


2 Answers 2


To achieve this, create a new page template and use this code in that file. Then, use your submit form to redirect the user after commenting to the new page.

$user_login = $_POST['user_login'];
$user_email = $_POST['user_email'];
$errors = register_new_user($user_login, $user_email);
if ( !is_wp_error($errors) ) {
    $redirect_to = !empty( $_POST['redirect_to'] ) ? $_POST['redirect_to'] : 'wp-login.php?checkemail=registered';
    wp_safe_redirect( $redirect_to );

Note that user_login and user_email are the names of your form's input boxes. The passwords will be randomly generated and sent to user's email address.

  • Actually this does not do what I requested. In fact it does what I said I didn't want to do - make the user log in.
    – rhinos
    Feb 10, 2017 at 20:09
  • You can remove the redirect line if you don't want to, or change it to homepage or current page.
    – Johansson
    Feb 11, 2017 at 6:15
  • Alright then, you didn't mention these in the question. I suggest you go with @Spartacus answer, but you can replace wp_insert_user with register_new_user to automatically generate their password and send it to their email address.
    – Johansson
    Feb 11, 2017 at 6:49
  • Sparticus' answer doesn't work, sadly.
    – rhinos
    Feb 11, 2017 at 21:14

Hook into comment_post and use wp_insert_user():

function wpse_255850_reg_user($comment_ID, $comment_approved) {
    if( 1 === $comment_approved ){
    $userdata = array(
    'user_login' =>  sanitize_user($_POST['username']),
    'user_email'   =>  sanitize_email($_POST['user_email']),
    'user_pass'  =>  NULL,
    'role'  => 'subscriber',
    'show_admin_bar_front'  => false

    $user_id = wp_insert_user( $userdata ) ;

    // On success.
    if ( ! is_wp_error( $user_id ) ) {
       wp_redirect( get_permalink() ); exit;

       } //end if
    } //end function

The $_POST values in this code should reflect those of your actual comment form, the ones here are just generic. And make sure you thoroughly sanitize and validate your user inputs.

  • Looks good only one problem. password NULL how can user sign in again?
    – rhinos
    Feb 10, 2017 at 19:12
  • Is there a password field on your comment form?
    – Spartacus
    Feb 10, 2017 at 20:09
  • wpse_255850_reg_user is the function name I made up for this post. You can make it whatever you want.
    – Spartacus
    Feb 10, 2017 at 20:10
  • Yeah, that would be a good solution to avoid the "registration" process, and to avoid a NULL password.
    – Spartacus
    Feb 10, 2017 at 20:14
  • Well, I tried this today. It doesn't work. Will have to wait for someone else to give a working solution. Commentor is not registered. I inserted this into functions.php, cleared wp super cache, and left an anonymous comment. Sadly, the user was not registered even after approving comment. Just another anonymous user.
    – rhinos
    Feb 11, 2017 at 21:13

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