Wordpress，以编程方式创建用户

How do I go about creating wordpress users programmatically?

I am using the method below, user is being created - but when I try to login with a password it gives me wrong password message, any suggestions please?

include 'wp-blog-header.php';
include 'wp-includes/registration.php';
include 'wp-includes/pluggable.php';
ini_set("memory_limit","1024M");
ini_set("max_execution_time", "240");
global $wpdb;
programmatically
$row = array(
    'user_name' => "wacek123",
    'password' => "wacek123",
    'email_address' => "wacek123@gmail.com",
    'name' => "wacek123",
    'surname' => "wacek123"
    );



$userdata = array(
    'user_login' => $row["user_name"],
    'user_pass' => wp_hash_password($row["password"]),
    'user_nicename' => $row["user_name"],
    'user_email' => $row["email_address"],
    'first_name'  => $row["name"],
    'last_name'  => $row["surname"],
    'role' => 'subscriber'
    );
wp_insert_user($userdata);

I'd recommand using wp_create_user instead: http://codex.wordpress.org/Function_Reference/wp_create_user

Example:

$user_id = username_exists( $user_name );
if ( !$user_id and email_exists($user_email) == false ) {
    $random_password = wp_generate_password( $length=12, $include_standard_special_chars=false );
    $user_id = wp_create_user( $user_name, $random_password, $user_email );
} else {
    $random_password = __('User already exists.  Password inherited.');
}