With this script you can easily control: 1. What extentions can be uploaded. 2. the size of the file 3. (only applies to images) Set a max or min. height and width 4.Change the
name of the file to what you want. (i.e. username) 5. Change the extention of the file.(you may wish to do this for security reasons say you allow .php files to be uploaded, you
could turn evil.php into evil.nullified)