php Unique filename when uploading

Question

I\'ve a submit discussion form with image upload in my website. Now, I want to upload a unique file name when the user submits their image so that I can show the result of a

Answer 1

If you need a unique name, you can use uniqid.

$filename = uniqid() . '.jpeg';

Be warned though that it will only be unique across one machine, ie it can generate the same thing if you run it at the very same time on two different machines.