Snoopy disguise proxy solution

Snoopy disguise proxy when I use the Snoopy class, the disguise proxy is as follows: $ snoopy-& gt; agent & quot; (compatible; MSIE4.01; MSN2.5; AOL4.0; Windows98) & quot; however, I output $ _ SERVER [& quot; HTTP_USER_AGENT & quot;] Proxy or my browser proxy, which is not changed at all? Snoopy disguise agents
When I use the Snoopy class, the disguised proxy is as follows:

$ Snoopy-> agent = "(compatible; MSIE 4.01; MSN 2.5; AOL 4.0; Windows 98 )"

However, I output $ _ SERVER ["HTTP_USER_AGENT"]
The proxy or my browser proxy is not changed at all? Please give me some comments

------ Solution --------------------
$ Snoopy-> agent = "(compatible; MSIE 4.01; MSN 2.5; AOL 4.0; Windows 98 )";
$ Snoopy-> fetch ('XXX. php ');
Echo $ snoopy-> results;

Write in xxx. php
Echo $ _ SERVER ["HTTP_USER_AGENT"];