My team have build an application using map server and php in windows environment and it's running well. But, when i running it in linux, one of the function (button) not running. Can sombody tell me why it's happen. Sombody told me that I i must change all the syntax to small caps because linux very sensitive with caps. I already done that but that function still not running. can sombody tell me why and how to solve it. TQ.