是的，你可以，但你需要包括registration.php 对于验证，例如：

//Need registration.php for data validation
require_once( ABSPATH . WPINC . \'/registration.php\');
$firstname = sanitize_text_field( $form_data[\'firstname\'] );
$lastname = sanitize_text_field( $form_data[\'lastname\'] );
$username = sanitize_text_field( $form_data[\'username\'] );
$email = sanitize_text_field( $form_data[\'email\'] );
//Add usernames we don\'t want used
$invalid_usernames = array( \'admin\' );
//Do username validation
$username = sanitize_user( $username );
if ( !validate_username( $username ) || in_array( $username, $invalid_usernames ) ) {
    echo \'Username is invalid.\';
}
if ( username_exists( $username ) ) {
    echo \'Username already exists.\';
}
//Do e-mail address validation
if ( !is_email( $email ) ) {
    echo \'E-mail address is invalid.\';
}
if (email_exists($email)) {
    echo \'E-mail address is already in use.\';
}
//Everything has been validated, proceed with creating the user
//Create the user
$user_pass = wp_generate_password();
$user = array(
    \'user_login\' => $username,
    \'user_pass\' => $user_pass,
    \'first_name\' => $firstname,
    \'last_name\' => $lastname,
    \'user_email\' => $email
    );
$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 );