[Dayrion]

I'm pretty sure it's optimizable :

PHP код:

DistinctNumber(number)
{
    new
        string[50],
        count,
        bool:sameNB = false;
    do
    {
        string[count] = random(number);
        for(new i; i < number; i++)
        {
            if(count == i)
                continue;
            if(string[count] == string[i])
                sameNB = true;
        }
        if(!sameNB)
            count++;
        sameNB = false;
    }
    while(count != number);
    return string;
} 


Also, change 50 by the max number you will generate in your script