The Underscore Archives

On 23 Aug 2007, at 10:00, Christian Wach wrote:

> On 23 Aug 2007, at 09:53, mike karthauser wrote:
>
>>> Find out what technology a site uses:
>>> http://builtwith.com/
>>
>> very nice. and useful stat : 40.42% of the top 5000 profiled sites
>> use PHP.
>
> I assumed it meant they use the .php extension, no? Is there any
> other way of telling?
>

It's in the headers. By default, PHP adds itself to the server header  
and adds an X-Powered-By header. e.g. one of my servers:

Server: Apache/1.3.34 (Debian) mod_gzip/1.3.26.1a PHP/5.2.0-8 
+etch5~pu1 mod_ssl/2.8.25 OpenSSL/0.9.8c mod_perl/1.29
X-Powered-By: PHP/5.2.0-8+etch5~pu1