How to generate unique id? For example, as YouTube

[notset]

Hello,

I want to generate an unique id (not only from digits, about 10 characters length) for every file in my mysql database.

How to do that?

Thank you.

[laserlight]

Using auto increment would be a simple solution.

[notset]

laserlight wrote:

Using auto increment would be a simple solution.

I meant, something like YouTube (http://youtube.com/watch?v=SmVsa1SFgfU) - not easy guessable.

[laserlight]

Take a cryptographic hash of the filename (and perhaps the current time, or the output of mt_rand(), or something like that). You could also look into [man]uniqid/man.