/**
* Compares the generated result with the user's result.
*
* @return boolean
* @author Reinhard Führicht <*****@*****.**>
*/
public function validateCaptcha()
{
$valid = true;
require_once t3lib_extMgm::extPath('mathguard') . 'res/ClassMathGuard.php';
if (!MathGuard::checkResult($_REQUEST['mathguard_answer'], $_REQUEST['mathguard_code'])) {
$valid = false;
}
return $valid;
}
/** this function returns math expression into your form, the parameter is optional
* quite simmilar to insertQuestion, but returns the output as a text instead of echoing
*/
function returnQuestion($question = QUESTION, $color = COLOR, $prime = 37)
{
//default prime is 37, you can change it when specifying the different parameter
$output = MathGuard::produceOutput($question, $color, $prime);
return $output;
}