public static function random(int $length = 64, string $characters = CharacterType::PRINTABLE_ASCII): string
    {
        $str = '';
        $l   = self::length($characters) - 1;

        for ($i = 0; $i < $length; $i++) {
            $r = \random_int(0, $l);
            $str .= $characters[$r];
        }

        return $str;
    }
public static function random(int $length = 64, string $characters = CharacterType::PRINTABLE_ASCII): string
    {
        $str = '';
        $l   = self::length($characters) - 1;

        for ($i = 0; $i < $length; $i++) {
            $r = \random_int(0, $l);
            $str .= $characters[$r];
        }

        return $str;
    }
public static function random ( int $ length = 64 , string $ characters = CharacterType :: PRINTABLE_ASCII ) : string { $ str = '' ; $ l = self :: length ( $ characters ) - 1 ; for ( $ i = 0 ; $ i < $ length ; $ i ++ ) { $ r = \ random_int ( 0 , $ l ) ; $ str .= $ characters [ $ r ] ; } return $ str ; }
Generate a random string of a given length and character set.

@param int    $length     How many characters do you want?
@param string $characters Which characters to choose from

@return string
Generate a random string of a given length and character set .