why use captcha code

Zend-based Captcha mechanism. How do I generate a verification code image? Use php GD? OK, right. In fact, the Zend Captcha module has been encapsulated. This article describes how to use the Zend Captcha module. How does one generate a verification

in the process of Web development , Verification code is often used to prevent the robot from constantly submitting data and causing the website to be paralyzed . Yii provides a verification code plug- in, that is , Captcha. The first step:using in

Why can someone else use the verification code? Why can someone else use the verification code? The following is the code for obtaining the verification code. is the verification code too simple? how can we make it more complicated? /** *

The content of this tutorial is close to the technical direction I am good at: Safe contact forms. As I mentioned in the previous tutorial, A common contact form helps a visitor communicate with you without exposing your email address to the

I want to sum up the verification code (the verification code used for open source. Of course, you can also implement it on your own, but you can use it for mature open-source projects.) After reading several open-source projects, we found that

Author: White Wolf Source: Http://www.manks.top/article/yii2_captcha This article copyright belongs to the author, welcome reprint, but without the author consent must retain this paragraph statement, and in the article page obvious location gives

Detailed steps for adding a verification code to Yii2 and detailed steps for yii2 verification code. Yii2 added the verification code step details, yii2 verification code details originally thought that yii2 framework verification code this is very

What is the website Verification Code generally placed on the server? Why? Are the website verification codes of javaphp.net stored in the same place? What is the website Verification Code generally placed on the server? Why? Are website

Detailed steps for adding a verification code to Yii2 and detailed steps for yii2 Verification Code I thought the yii2 framework verification code was comprehensive. I tried Baidu and google. Most of the tutorials were not completely scattered. I

Where does the site verification code usually be placed on the server side? Why? Does the Java PHP. NET website Verification code be put in the same place? Reply content: Where does the site verification code usually be placed on the server