I have a bit of a strange situation.
What I want to be able to do is if a html form is submitted have a php include() or something that would callup a seperate external website url and look for an instance of the phrase Invalid user credentials on the html/jsp page and if that phrase does not exsist on the page then redirect the user to a specified url otherwise display a error message to the page. However I don't want to display any content from the page I am including.
Not sure if the above makes sense what I want to do. The goal is to enable people to be logged into two different websites by filling out one html form. And I am not able to remotely connect to the seperate websites database most I can do is feed the seperate website a users username/pass via the address bar since that site uses a $_GET to recieve the user cridentials to authenticate.