How can I open an URL without using Application.OpenURL?

I am calling an URL in the Start() function. But I don’t want to open it using Application.OpenURL(). I don’t want to open a browser window explicitly.

Basically, I have a PHP file in the URL, which posts score to the database, How can I do this? Please, any suggestions?

Take a look at http://unity3d.com/support/documentation/ScriptReference/WWW.html and http://unity3d.com/support/documentation/ScriptReference/WWWForm.html.