$firstname = sanitize_text_field( $_POST['firstname'] );
    $lastname = sanitize_text_field( $_POST['lastname'] );
    $username = sanitize_text_field( $_POST['reg-username'] );
    $user_pass = sanitize_text_field( $_POST['reg-password'] );
    $pass_confirm = sanitize_text_field( $_POST['confirm_password'] );
    $gender = sanitize_text_field( $_POST['gender'] );
    $email = sanitize_text_field( $_POST['email'] );
    //Add usernames we don't want used
    $invalid_usernames = array( 'admin' );
    $errors = array();
    //Do username validation
    $username = sanitize_user( $username );
    if ( empty( $username ) || validate_username( $username ) === false || in_array( $username, $invalid_usernames ) === false ) {
        $errors[]= 'Username is invalid.';
    }
    if ( username_exists( $username ) === false) {
        $errors[]= 'Username already exists.';
    }
    //Do e-mail address validation
    if ( !is_email( $email ) ) {
        $errors[] = 'E-mail address is invalid.';
    }
    if (email_exists($email) === false) {
        $errors[] = 'E-mail address is already in use.';
    }
    if ($user_pass != $pass_confirm) {
        $errors[] = 'Password combination incorrect.';
    }
    $genders = array('male','female',true);
    if ( in_array( $gender,$genders )  === false){
        $errors[] = 'Invalid gender';
    }

    //Everything has been validated, proceed with creating the user

    //Create the user
    if(!empty($errors)):
        wp_send_json_error($errors);
    endif;

    //$user_pass = wp_generate_password();
    $user = array(
        'user_login' => $username,
        'user_pass' => $user_pass,
        'first_name' => $firstname,
        'last_name' => $lastname,
        'user_email' => $email,
        'gender' => $gender
        );
    $user_id = wp_insert_user( $user );

    /*Send e-mail to admin and new user -
    You could create your own e-mail instead of using this function*/
    wp_new_user_notification( $user_id, $user_pass );
    wp_send_json_success($user_id);