使用Zend_Captcha生成验证码的方法

3. class TestController extends Lyw0301_Controller_Action {

4. public function init() {
5. parent::init();
6. $this->view->title = '测试';
7. $this->view->baseUrl = $this->getFrontController()->getBaseUrl();
8. // $this->_helper->viewRenderer->setNoRender();
9. //Zend_Layout::getMvcInstance()->disableLayout();
10. }
11. function generateCaptcha() {
12. $captcha = new Zend_Captcha_Image();
13. $captcha->setTimeout('300')
14. ->setWordLen('6')
15. ->setHeight('80')
16. ->setFont('./images/font/micross.ttf')
17. ->setImgDir('./images/code');
19. $captcha->generate();
20. return $captcha->getId();
21. }

22. //validates captcha response

23. function validateCaptcha($captcha) {
24. $captchaId = $captcha['id'];
25. $captchaInput = $captcha['input'];
26. $captchaSession = new Zend_Session_Namespace('Zend_Form_Captcha_' . $captchaId);
27. $captchaIterator = $captchaSession->getIterator();
28. Zend_Debug::dump($captchaIterator);exit;
29. $captchaWord = $captchaIterator['word'];
30. if($captchaWord) {
31. if( $captchaInput != $captchaWord ){
32. return false;
33. } else {
34. return true;
35. }
36. } else {
37. return false;
38. }
39. }
40. public function indexAction() {
41. $captchaId = $this->generateCaptcha();
42. $this->view->captchaId = $captchaId;
43. if(isset($_POST['captcha'])) {
44. $captcha = $_POST['captcha'];
45. if( $this->validateCaptcha($captcha) ) {
46. $this->view->message = 'yes';
47. } else {
48. $this->view->message = 'no';
49. }
50. }
51. }
52. }
53. ?>

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