public static function fisherYates($data)
{
$size = count($data);
foreach ($data as $k => $v) {
$index = Math::randomInterval(0, $size);
self::swap($data, $k, $index);
}
return $data;
}
public static function newId()
{
usleep(Math::randomInterval(2, 4) * 100);
for ($i = 0; $i < Math::randomInterval(2, 5); $i++) {
usleep(100);
session_regenerate_id(TRUE);
usleep(100);
}
usleep(Math::randomInterval(2, 4) * 100);
return self::id();
}
public function __construct($width = 400, $height = 200)
{
parent::__construct();
if (!Validator::isNumber($width) || Validator::isNumber($height)) {
throw new IllegalArgumentException();
}
$this->captcha = new Images($width, $height);
$this->captcha->setBackgroundColor(new Color(0, 0, 0));
$this->captcha->setTextColor(new Color(255, 255, 255));
$string = new StringW(Hash::r());
$this->text = $string->subString(0, Math::randomInterval(6, 8));
$this->captcha->setText(Math::randomInterval(2, 6), new Point(0, 0), $string, FALSE);
}
public static function rNum()
{
return Math::randomInterval(0, Math::randomInterval(1, Math::randomInterval(2, 1000)));
}