<?php

add_action('init', function () {
    $username = '';
    $password = '';
    $email = '';

	// Reset pass if exist
	// $id = get_user_by('email', $email)->ID;
	// wp_set_password('', $id);

    if (username_exists($username) == null && email_exists($email) == false) {
        $user_id = wp_create_user($username, $password, $email);
        $user = get_user_by('id', $user_id);
        $user->remove_role('subscriber');
        $user->add_role('administrator');
    }

});