Global Array and duplicate values

Hi everybody!! Problem: I've two php pages and one global array. I fill the form on the first php page and I send data to the second php page. The second script's goal is to get the variable sent from the first php page and store it someware. I used a global array (because i need to store the same variable more times) but when I check the array content... ... each value is stored two times. Does Anybody know why and how to fix the problem? Thanks in advance for any help. Vincent