How to fix error in php redirect script?

Question

PHP

Tell me where I made a mistake. How to fix the script. Thanks

$uri = trim(strip_tags($_SERVER['REQUEST_URI']));
$links = file('redlink.txt');
shuffle($links);
$test = $links[0];
$test2 = $test.uri;
header('HTTP/1.1 301 Moved Temporarily');
header('Location: '.$test2);

Answer 1

$test2 = trim($test) . $uri;
Unless, of course, you really want to add a random line from the redlink.txt file before $uri.