HttpRequest

[precision]

I have a question about the HttpRequest class.... I'm not new to php,but I am new to using this class. I don't manage our server, but I had our system admin install the changes in order to use the HttpRequest class. I'm having a problem where I cannot find the class when I try to create a new instance

$this->my_request = new HttpRequest('https://......./api/login1'); (replaced actual url with .......

I get the following error message

Class 'HttpRequest' not found

Running on php 5.2.5 on linux with Apache....
What might I be missing here...???
Thanks

[Weedpacket]

Verify that it has been installed; it should be listed when you run phpinfo().