how to be secure with file uploads...

[eluser]Wuushu[/eluser]
[quote author="shawnhenry" date="1249335072"]PHP makes uploading files easy. You can upload any type of file to your Web server. But with ease comes danger and you should be careful when allowing file uploads.

In spite of security issues that should be addressed before enabling file uploads, the actual mechanisms to allow this are straight forward. In this tutorial we will consider how to upload files to some directory on your Web server. We will also discuss security issues concerned with the file uploading.[/quote]

What tutorial.. ?