I've noticed that there are distributed OpenSource PHP applications that prevent websites variables from interfering with them : how do they do that? How can a variable remain in the scope of the application only?
Recently, I had an issue with FCKeditor which wouldn't recognize a variable of mine that I set right at the beginning of the page output. How could I circumvent the protection so that my variables are recognized within such an external application?
Thanks a lot for the help !