captcha what is

How do I generate a captcha picture? Using the PHP gd? Ok,right. In fact, Zend's CAPTCHA module has been packaged well. This article explains how to use the Zend Captcha module. Environment installationFirst Zend The captcha need to install GD. See

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

Verification code is often used for landing pages, message pages, registration page, the principle of verification code is very simple: the use of GD library to create a picture, of course, the image must add the necessary interference code, and

After groping, finally can apply the verification code in Laravel 5.1.Because the English slag five levels, so almost no search for anything useful, so consider on GitHub search verification Code pack!Note: The package on GitHub often has

Copy CodeThe code is as follows: /** Captcha Class base on PHP GD Lib* @author Design* @version 1.0* @demo* Include (' captchaclass.php ');* $captchaDemo =new Captcha ();* $captchaDemo->createimage ();*/Class captcha{@ Define CAPTCHA Picture

This article introduces the application of Zend-based Captcha mechanism. For more information about how to generate a verification code image, see? Use php GD? OK, right. In fact, the Zend Captcha module has been encapsulated. This article describes

How do I generate a captcha picture? Using PHP's GD? Ok,right. In fact, Zend's CAPTCHA module has been encapsulated. This article is about how to use the Zend Captcha module. Environment installationFirst Zend Captcha need to install GD. Check to

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. Environment InstallationFirst, GD must be installed for Zend

As my PHP website has more and more visits to blog development and more comments, Wordpress has more and more visits to blog development and comments as Wordpress does not have the filtering function, wordpress spam comments are getting more and

1, installation We install the Captcha expansion pack via Composer: Composer require Mews/captcha Note: Using this expansion pack in Windows also requires the installation of the GD2 extension (php.ini to cancel Php_gd2.dll in the previous

ProblemIn a less fortunate situation, people use automated programs to submit forms, causing a lot of rubbish throughout the internet. One way to prevent this is to use a CAPTCHA---CAPTCHA: fully automated to differentiate between computer and human

CAPTCHA implement verification code to verify the user login, to prevent the password from being violently cracked.The following is run in the SPRINGMVC framework.imported jar Packages:Kaptcha-2.3.2.jar: http://download.csdn.net/detail/u013147600/905

PHP implementation of CAPTCHA Verification code class instance, CAPTCHA verification code This paper describes the PHP implementation of the CAPTCHA verification code class, in the PHP program design has a very wide range of applications. Share to

Example of the CI framework verification code CAPTCHA auxiliary function usage, cicaptcha. Examples of CI framework verification code CAPTCHA auxiliary function usage. This document describes the use of the CI framework verification code CAPTCHA

Captcha (automatic distinction between computer and human Turing Test-completely Automated public Turing test to tell Computers and humans Apart, abbreviated as Captcha) commonly known as CAPTCHA, is a public automatic program that distinguishes

Yii uses the Captcha verification code, yiicaptcha verification code. Yii uses the Captcha verification code. This document describes how Yii uses the Captcha verification code. For your reference, refer to the following code: for details, refer to

So far, Chiang has tidied up the Mini-capatcha, Myqaptcha, and the WordPress program itself with the anti-spam comment plug-in function. There is also a similar function we must have encountered, such as in 12306 to buy tickets, the choice of

Yii built-in Captcha basically can meet most requirements, if you have special requirements for verification code, you can customize the CAPTCHA, which is mainly through the extension of ccaptchaaction to achieve, this example to customize a

1. Error resolution that cannot be refreshed with the page refresh: Modify source Code vendor/yiisoft/yii2/captcha/captchavalidator.php /** * @inheritdoc * * Public functionclientvalidateattribute($object, $attribute, $view)

Self-encapsulated CAPTCHA human bypass. We recommend that you use CAPTCHA human bypass (called official dll) in windows, and Superman CAPTCHA human bypass (http api) in linux) Copy codeThe Code is as follows:# Coding: UTF-8From ctypes import *Import