if ($key) {
if (empty($_SESSION[$key]) || strtolower(trim($_REQUEST[$key])) != $_SESSION[$key]) {
return false;
} else {
return true;
}
}
}
static function _get_image()
{
if (STInput::get('st_get_captcha')) {
$key = STInput::get('key');
$captcha = new SimpleCaptcha();
if ($key) {
$captcha->session_var = $key;
}
$captcha->CreateImage();
die;
}
}
static function get_code()
{
return 'st_' . md5(rand(1, 999) * time());
}
static function get_captcha_url($key)
{
return esc_url(add_query_arg(array('st_get_captcha' => 1, 'key' => $key), home_url()));
}
}
STCoolCaptcha::init();
}
