Entry

Does uniqid still generate a unique id on SMP boxes?

Jun 30th, 1999 21:08
Nathan Wallace, Jim Winstead

Theoretically uniqid may not generate a unique id on SMP boxes. 
Realistically though, it will.

You could work around this by using the process id (getmypid()) as
part of the prefix.

Apache's mod_unique_id also uses an algorithm that avoids this problem,
so that if that is enabled on your server, you can simply use
$UNIQUE_ID.