FDF Question

Hi, I am new in this php and fdf field, this is the questions when I am trying to solve the problem of my company: 1. when fdf_create() create a new fdf file, where does it put the file? I tried to set up the path, but it does not work like I wish. 2. when an end user fill in some data in a online form and the fdf be created dynamically, the fdf file is on the webserver or the end user's local machine? please help. Thanks Qian IT Service Coordinator Mississippi Home Corporation Phone:(601)718-4619 Fax: (601)968-0204