BUG FIX PHP script URL rotator

I need to bug fix my URL rotator. Currently the URL rotator appends the keyword variable which gets from google serp search query. But now google stopped to provide the serp search query. So I need to bug fix the script to take $_SERVER["REQUEST_URI"]; and append the variable in URL. As below ######## $url = $_SERVER["REQUEST_URI"]; // gives /test/test/ from [login to view URL] $url = trim ( $url ,'/' ); $url = str_replace('%20', ' ', $url); $url = str_replace('27s', 's', $url); $url = str_replace('22', 'inch', $url); $url = str_replace('27', 'inch', $url); $tokens =implode(' ', array_slice(str_word_count($url, 2,'0..9'), 0, 50));