Getting data from MySQL

Today, I have been mostly... not getting data from a MySQL database.

I thought I had this sorted already - I had a script that could send data to a php script, then receive a query string and format the data as a URL variable.

As usual, when you try to actually use it for something - it turns out to be more complicated.

First of all, using capital letters in the query string that PHP is outputting is apparently not a good idea! Can you imagine?!? It took me three hours just to pin the problem down to that!

So then I though I had the problem sorted, but no.

I think it might be something to do with the length of the query string...

More on this later?