/**
 * Validate a new blog signup
 *
 * @since MU
 *
 * @return null|boolean True if blog signup was validated, false if error.
 *                      The function halts all execution if the user is not logged in.
 */
function validate_another_blog_signup() {
	global $wpdb, $blogname, $blog_title, $errors, $domain, $path;
	$current_user = wp_get_current_user();
	if ( ! is_user_logged_in() ) {
		die();
	}

	$result = validate_blog_form();

	// Extracted values set/overwrite globals.
	$domain = $result['domain'];
	$path = $result['path'];
	$blogname = $result['blogname'];
	$blog_title = $result['blog_title'];
	$errors = $result['errors'];

	if ( $errors->get_error_code() ) {
		signup_another_blog($blogname, $blog_title, $errors);
		return false;
	}

	$public = (int) $_POST['blog_public'];

	$blog_meta_defaults = array(
		'lang_id' => 1,
		'public'  => $public
	);

	/**
	 * Filter the new site meta variables.
	 *
	 * @since MU
	 * @deprecated 3.0.0 Use the 'add_signup_meta' filter instead.
	 *
	 * @param array $blog_meta_defaults An array of default blog meta variables.
	 */
	$meta_defaults = apply_filters( 'signup_create_blog_meta', $blog_meta_defaults );
	/**
	 * Filter the new default site meta variables.
	 *
	 * @since 3.0.0
	 *
	 * @param array $meta {
	 *     An array of default site meta variables.
	 *
	 *     @type int $lang_id     The language ID.
	 *     @type int $blog_public Whether search engines should be discouraged from indexing the site. 1 for true, 0 for false.
	 * }
	 */
	$meta = apply_filters( 'add_signup_meta', $meta_defaults );

	wpmu_create_blog( $domain, $path, $blog_title, $current_user->ID, $meta, $wpdb->siteid );
	confirm_another_blog_signup($domain, $path, $blog_title, $current_user->user_login, $current_user->user_email, $meta);
	return true;
}

function validate_another_blog_signup()
{
    global $wpdb, $blogname, $blog_title, $errors, $domain, $path;
    $current_user = wp_get_current_user();
    if (!is_user_logged_in()) {
        die;
    }
    $result = validate_blog_form();
    extract($result);
    if ($errors->get_error_code()) {
        signup_another_blog($blogname, $blog_title, $errors);
        return false;
    }
    $public = (int) $_POST['blog_public'];
    $meta = apply_filters('signup_create_blog_meta', array('lang_id' => 1, 'public' => $public));
    // deprecated
    $meta = apply_filters('add_signup_meta', $meta);
    wpmu_create_blog($domain, $path, $blog_title, $current_user->id, $meta, $wpdb->siteid);
    confirm_another_blog_signup($domain, $path, $blog_title, $current_user->user_login, $current_user->user_email, $meta);
    return true;
}