captcha code for html

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Application of CAPTCHA mechanism based on Zend _php tutorial

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

Support Chinese alphanumeric, custom font PHP captcha Program _php Tutorial

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

Laravel-5.1----Integrate mews CAPTCHA into your project!

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

CAPTCHA for Laravel 5 application Generation Verification code example

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

"MVC3" 20 Recipes-(15) use CAPTCHA to prevent malware from automatically submitting comments (anti-drip)

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

PHP implementation of CAPTCHA Verification code class instance, CAPTCHA verification Code _php Tutorial

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

PHP-Made Simple captcha identification code, PHP captcha Code _php Tutorial

PHP code for simple Verification Code identification, PHP CAPTCHA codes Always wanted to write this, after a long time today interest came to simply record. Verification Code Fully automatic distinguish between computer and human public Turing Test

PHP implementation of dynamic random verification Code mechanism (CAPTCHA)

Implementation of dynamic random verification code mechanism in PHPThe Verification Code (CAPTCHA) is the abbreviation for "Completely Automated public Turing test to tell Computers and humans Apart" (fully automated computer-and human-Turing test),

The perfect php generation CAPTCHA Code _php tutorial

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

The perfect PHP code to generate CAPTCHA program

• Create a new PHP file captcha_code_file.php The code is as follows Copy Code Open Session FirstSession_Start ();Define foreground display verification code length & width$image _width = 120;$image _height =

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