confirmation code

[Anon]

I need help creating a script that will create a random alpha-numeric string.

It can contain: (0-9) (A-Z) (a-z)

It must be 15 characters long:

The reason for this, is I when a user registers to become a member, the script will email the visitor a link that he/she must click on to activate his/her account.

The link would look like this:

http://www.domain.com/confirm.php?u=USERNAME&c=CONFIRMATIONCODE

The link will query the temporary database to see if the username and confirmation code matches, if it does, the information is moved into the 'active' database and the user can now login to his/her account.

Also, if the confirmation code that is generated matches one already found in the temp database, I can always have the script check if it matches and re-loop to generate a new confirmation code. But I figure 15 characters is enough.

Also when I do the loop, would this make the if statement true

$generatedcode = "adkj20ad082as";
$databasecode = "ADKJ20AD082AS";

one is all lowercase, one is all capital. (just an example)

if ($generatedcode == "$databasecode") {
$match = "yes";
}

Thanks!

[nightowl]

FUNCTION generate_password() {

// First seed the rand-generator
mt_srand ((double) microtime() * 1000000);
$symbol = array (0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z);

for ($i=0; $i<8; $i++) {
$x = mt_rand(0,61);
$password .= $symbol[$x];

}

return $password;

}