Well maybe not PHP gurus, just web/apache/php knowledge required.
I want to pass a value from one web page to another, or to be exact from one piece of PHP (on web page A) to another piece of PHP (on web page B). Having said that I can sort of understand the problem, there's nothing necessarily tying the two pages together, they *could* be running on different hosts under different web servers for all the web servers know about it.
So, I have a Wiki where page A has a link to page B and I want to be able to pass some data from page A to page B. They *are* displayed by the same web server (which is apache2) and they *are* on the same host.
I can't use cookies because by the time I can execute some PHP code the headers are long gone.
So how can page A 'send' a value to page 'B'? Am I reduced to the nasty (but perfectly possible) expedient of page A writing something to a file somewhere and page B reading it?