Create wordpress user on commandline

user.php

<?php
/**
 * @author: michael schmitt
 * @desc: 	copy file to the / of a wordpress instance
 * 			execute on commandline: php user.php username + password
 */
if($argc < 3) {
	die("usage php user.php username password" .PHP_EOL);
}
$userName= $argv[1];
$password=$argv[2];
echo $userName;





require( dirname( __FILE__ ) . '/wp-blog-header.php' );

$user_id = get_user_by('name', $userName);
if(null !== $user_id) {
$user_id = 	wp_create_user($userName, $password);
$user = new WP_User( $user_id );
$user->set_role( 'administrator' );
}