Re: Generating random numbers

TG wrote:

Is the most important thing to be random or to be unique? If you need unique, you can use a timestamp including microseconds. Maybe using something like microtime(): http://us.php.net/manual/en/function.microtime.php The only other way you're probably going to guarentee that you don't repeat numbers is to keep a list of what's been used and compare against it. Otherwise, there's always going to be a slim chance you'll repeat a number. What do you plan on using it for? Maybe someone can give a better recommendation for what you need. And will this number be generated by PHP or the database? Or can it be either?

There's also http://au.php.net/uniqid - you could even use a different prefix for each call. -- Postgresql & php tutorials http://www.designmagick.com/