captcha tools

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

This article introduces a very good code generation PHP program, first when the user requests HTTP, the server side creates a unique SessionID, this is the session ID, and then to start the GD library or ImageMagick these drawing tools, The random

Topics Many automatedProgramThe form is automatically submitted, causing a large amount of junk data on the Internet. To prevent this situation, we have implemented a graphic Verification Code (CAPTCHA:Completely automated public Turing test to

Excellent and useful collection of PHP tools views: 1141 Release Date: 2013/09/04 Category: Technology sharing PHP is one of the most widely used server-side open source scripting languages, many excellent open source programs are built on PHP, such

Verification Code making First, the experiment introduction This experiment will lead to the use of object-oriented ideas to encapsulate a validation code class. And in the registration and landing interface to display the use. Through the study

For custom verification code classes!/** To-Change the license header, choose License Headers in Project Properties.* To change this template file, choose Tools | Templates* and open the template in the editor.*/Class image{Private $img;Public

Currently, we are involved in dicom (pacs) systems. If we develop and encapsulate dicom3-based systems by ourselves, it is not a small project. The current big environment, today I want to provide you with a project, you will be able to submit

This course through the use of PHP and Web front-end technology to achieve a website registration login portal page, learning and practice PHP programming, interested students can refer to. This article introduces the implementation of user

OverviewMany developers hate the verification code of the website, especially the programmer who writes the web crawler, and the website set up the verification code, is to prevent the robot to visit the website, cause unnecessary loss. Well now,

Development tools: Eclipse, Kaptcha-2.3.jar package. First, create a Web project; Second, create a new JSP page (content, a text box, a picture container, a submit button) Third, you can see the source of the Image verification code (src=