Generare codici random

[mtx_maurizio]

class RandStr
{
    protected     $car;
    protected    $dim;
    
        public function __construct($dim)
        {
            $this->car = "aAbBcCdDeEfFgGhHiIlLjJkKmMnNoOpPqQrRsStTuUvVwWxXyYzZ0123456789";
            $this->dim = $dim;
            
        }
        
        public function CreateString()
        {
            srand((double)microtime()*1000000);
            $string = '' ;

                for($inc=0; $inc<$this->dim; $inc++) 
                {
                    $rand = rand(0, strlen($this->car)-1);
                    $scar = substr($this->car, $rand, 1);
                    $string = $string . $scar;
                }
            
            return $string;
        }
}

// per ottenere una stringa random di 10 caratteri

$rand = new RandStr(10);
echo $rand->CreateString();