/**
* Create Code
*
* @return bool
*/
public function generateCode()
{
if ($this->invalid) {
return false;
}
if ($this->mode === "bmp") {
$this->config["num_chars"] = 4;
$this->code = mt_rand(pow(10, $this->config["num_chars"] - 1), (int) str_pad("9", $this->config["num_chars"], "9"));
} else {
$raw_code = md5(uniqid(mt_rand(), 1));
if (!empty($this->config["skip_characters"])) {
$valid_code = str_replace($this->config["skip_characters"], "", $raw_code);
$this->code = substr($valid_code, 0, $this->config["num_chars"]);
} else {
$this->code = substr($raw_code, 0, $this->config["num_chars"]);
}
if (!$this->config["casesensitive"]) {
$this->code = strtoupper($this->code);
}
}
$this->captcha_handler->setCode($this->code);
return true;
}
