Any algorithm using "random" numbers risks repition. What you want is a unique number. Something like $$ . time (Thats the process ID concatenated with the epoch.) If you want it to use letters and such, change the base after generating the number. Here is an algorithm for that:
# For a positive $number
my @nums = (0..9,'a'..'z','A'..'Z');
my $base = @nums;
my $rep = ""; # this will be the end value.
while( $number > 0 )
{
    $rep = $nums[$number % $base] . $rep;
    $number = int( $number / $base );
}

[download]
(Thanks Tye for looking over my shoulder and helping construct that simple algorithm)

In reply to RE: Randomizing Unique ID? by Adam
in thread Randomizing Unique ID? by Martin A

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