I recieve a file instead of access PhpMyAdmin page [duplicate]

When I installed Php, PhpMyAdmin and Nginx, I recievied this file with these code file instead of access to

http://localhost:80/phpmyadmin

<?phpdeclare(strict_types=1);use PhpMyAdmin\Routing;if (! defined('ROOT_PATH')) {    // phpcs:disable PSR1.Files.SideEffects    define('ROOT_PATH', __DIR__ . DIRECTORY_SEPARATOR);    // phpcs:enable}global $route, $containerBuilder;require_once ROOT_PATH . 'libraries/common.inc.php';$dispatcher = Routing::getDispatcher();Routing::callControllerForRoute($route, $dispatcher, $containerBuilder);

I've done like thisphpmyadmin 404 error in nginxto fix the 404 error but after that I've received error above.Sorry for my bad English.