nginx-basic/usr/share/nginx/html/phptest/vars.php

<?php
    /* exports server vars
    recommended tests:
        /vars.php
        /vars.php/
        /vars.php/foo
        /vars.php/foo/bar.php
        /vars.php/foo/bar/php?v=1
    see https://www.nginx.com/resources/wiki/start/topics/examples/phpfcgi/
    */
    var_export($_SERVER)
?>