I am wondering if anyone knows of any resources that could help me resolve an issue that I am having with PHP and Apache. I need to upload files to my webserver via the web using php. This is simple. Where I run into a problem is how Apache and PHP allocate memory. I am wondering while the posting is ocurring where this data is being stored. Does it store in the cache, physical memory, or swap. Or does it store in all of these or none of these. I need to know this so I can accurately estimate the limitations of the program. File upload sizes may be greater then 2GB.