readfile

Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8

Outputs a file

        <?php readfile(string $filename, bool $use_include_path = false, ?resource $context = null): int|false
    

laravel/framework

<?php         $response = (new Cache)->handle(new Request, function () {

            return new StreamedResponse(function () {

                $filePath = __DIR__.'/../fixtures/test.txt';

                readfile($filePath);

            });

        }, 'max_age=120;s_maxage=60');

tests/Http/Middleware/CacheTest.php