On a web site, HTTP headers show PHP version like X-Powered-By: PHP/5.1.6 [root@server12 ~]# curl -I http://netfree.netfreehost.com HTTP/1.1 200 OK Server: nginx/1.1.0 Date: Sun, 11 Sep 2011 20:00:40 GMT Content-Type: text/html Connection: keep-alive X-Powered-By: PHP/5.1.6 Cache-Control: no-cache, pre-check=0, post-check=0 Expires:
