RE: [PHP] How do you guys do this?

>> I used microtime() to differentiate them, but in retrospect it should >> have been a no-brainer to use the database primary id to help >> differentiate these, since the DB already did all the heavy lifting >> involved in ensuring uniqueness. > >Even though it seems incredibly unlikely, isn't is safer to just not >worry about it and use unique ids instead? Why take the risk when you >can use an autonumber from a database or md5(uniqid(rand(), true)), or >even: time() . md5(uniqid(rand(), true)) if you want to be really >paranoid? According to the docs, uniqid() relies on microtime() anyway, so it works out to almost the same thing. You could just as well make a call to the return value of the mktemp program, as well. Regardless, the important thing is that you generate uniqueness /somewhere/ - if you're using a DB, you get uniqueness for free! :) --------------------------------------------------------------------- michal migurski- contact info and pgp key: sf/ca http://mike.teczno.com/contact.html