rand() and mt_rand()

johnie

Hi. I'm using rand() or mt_rand() to give a temporary file i upload a random name so that i can work with it.
However the file always gets the same name, resulting in overwriting a previous uploaded file.
These 2 functions aren't supposed to return a random value?

rand() returns 2
mt_rand() returns 1755202938

Why am i getting the same number all the time?
Thanks

John

BDKR

Ha ha ha ha ......

Something sounds seriously wrong. Why don't you let us see some code so that we can begin to figure it out.

Cheers,
BDKR

DigitalExpl0it

you need to give rand() something to random

$number = rand(6,9); // this will random between 6 and 9

if you need a 8 digit number or "Filename"

why not just do this...

$filename = rand(10000000, 300000000);

though I dont think this is really what your looking for

johnie

$tmp = rand();

$image_name = $tmp.$extension;

simple 🙂

johnie

I tried it Digital.
I still get a fixed number

DigitalExpl0it

Originally posted by johnie
I tried it Digital.
I still get a fixed number

are you use a random generator with it also?

srand((double)microtime()*1000000);

johnie

No.
should I?

DigitalExpl0it

check out this site

http://rbcode.com/test.php

now refresh it.. you should get diffrent numbers...here is the code

<?
srand((double)microtime()*1000000);
$filename = rand(10000000, 300000000);
echo "$filename";
?>