switch_to_user_locale()

switch_to_user_locale( int $user_id ): bool

function switch_to_user_locale( $user_id ) {
	/* @var WP_Locale_Switcher $wp_locale_switcher */
	global $wp_locale_switcher;

	if ( ! $wp_locale_switcher ) {
		return false;
	}

	return $wp_locale_switcher->switch_to_user_locale( $user_id );
}