What can i add to make this more unique?

chrisj

This works fine, and creates a random string, but I was wondering if there is something else I can add to this line, to create a little more randomness, something VERY simple?

$randomString = (time());

NogDog

This expression will give you a random 4-character alphanumeric string:

base_convert(rand(round(36*36*36+1), round(36*36*36*36)), 10, 36)

For a longer string, just concatenate them together:

$randString = base_convert(rand(round(36*36*36+1), round(36*36*36*36)), 10, 36)
            . base_convert(rand(round(36*36*36+1), round(36*36*36*36)), 10, 36);

(Or incorporate it into a function that will concatenate as many times as desired.)

Weedpacket

There's also [man]uniqid[/man], which is effectively based on [man]microtime[/man] (which itself generates distinct values faster than [man]time[/man]) but (optionally) with more entropy added (since by itself, a sequence of timestamps itsn't very random).

chrisj

NogDog;11043331 wrote:
This expression will give you a random 4-character alphanumeric string:
base_convert(rand(round(36*36*36+1), round(36*36*36*36)), 10, 36)
For a longer string, just concatenate them together:
$randString = base_convert(rand(round(36*36*36+1), round(36*36*36*36)), 10, 36)
            . base_convert(rand(round(36*36*36+1), round(36*36*36*36)), 10, 36);
(Or incorporate it into a function that will concatenate as many times as desired.)

Can I use that + (time()) ?
If so, how would I combine them?

Thanks

NogDog

chrisj;11043335 wrote:
Can I use that + (time()) ?
If so, how would I combine them?

Thanks

I probably wouldn't, if you want more randomness, since time() by its nature is not random, but you certainly could just concatenate it with whatever you want if you need that time indicator, e.g.:

$result = time() . base_convert(rand(round(36*36*36+1), round(36*36*36*36)), 10, 36);

chrisj

Thanks