rumor verification

This article mainly explains how to generate an image verification code in php, including a digital verification code, a digital and letter verification code, a Chinese verification code, a google-like verification code, and an arithmetic

Many webmaster for the forum is too many spam ads crazy, this procedure is to deal with the forum spam mass device. Change the verification code to an addition operation, such as the verification code display "25+64 equals?" , then enter "91" to pass validation. Look at the effect chart contrast: Character verification Code: → Addition

12306 website launched the "Color dynamic verification Code mechanism", the new version of the verification code not only often appear characters stacked pressure, but also constantly jitter, many people's Congress called "See not clear," said the verification code, Picasso's abstract painting Mody! Iron Total customer Service said: In order to be able to buy tic

The simple and safe PHP verification code is attached with the call method, and the php verification code is attached with the call. Simple and safe PHP verification code with call method, php verification code with Call 1, verification code example 2, php

The Authentication code is to prevent the machine from flooding to the website pollution and increase the server burden to appear. At present, large and small sites have verification code. Today, I implemented a simple authentication code class. Simply because there is no interference in the arc and so on, but the text rotated a bit. Of course, because of the font, it's not easy to look at it at a glance. At the same time, in order to avoid the case

PHP verification code-Ajax verification implementation method. In website development, most of us use ajax to perform some operations to provide user experience, next, I will introduce a friend who needs to use ajax to implement the verification code for refreshing pages. in order to provide user experience, most of them use ajax for some operations in website de

This article brings the content is about the PHP implementation to generate mixed verification code and image Verification code and test (code), there is a certain reference value, the need for friends can refer to, I hope to help you. Generate a hybrid verification code and encapsulate it into a function, file name: buildVerifyCode.func.php Range (' A ', ' Z

The ThinkPHP form is used for automatic verification and thinkphp form verification. The ThinkPHP form is used for automatic verification. the thinkphp form verification uses the TP3.2 framework publicfunctionadd_post () {verification rule $ rulearray (array (name, require,

Php generates image verification codes-five verification codes are attached, I used to output the verification code in the past. I used JavaScript to generate a verification code string at the front end, and then passed it to the backend to output the verification code image

When a front-end user registers, fill in the value of the verification code image, and then match the backend. However, because the user is not registered, he cannot be bound with an identification ID. Therefore, I am designing this for the moment: when a verification code image is generated, the value of the verification code is saved in the cache (redis, cache

Php verification code generation, php verification code generation. Php verification code generation. php verification code generation verification code is usually used to ensure security of our website registration or login is not injected, but for more security, we usually