How to implement a PHP authentication code class
This article mainly shows you "how to implement a PHP Captcha class," the content is simple and easy to understand, organized clearly, I hope to help you solve doubts, let Xiaobian lead you to study and learn "how to implement a PHP Captcha class" this article bar.
I. Example of Captcha
II. php Captcha class, secoder.class.php
2. Check if the Captcha is correct
3. Captcha Input Box Call Page
Click the picture to retrieve the Captcha
