WordPress Version: 5.9
/**
* Validates the new site sign-up.
*
* @since MU (3.0.0)
*
* @return array Contains the new site data and error messages.
* See wpmu_validate_blog_signup() for details.
*/
function validate_blog_form()
{
$user = '';
if (is_user_logged_in()) {
$user = wp_get_current_user();
}
return wpmu_validate_blog_signup($_POST['blogname'], $_POST['blog_title'], $user);
}