free php captcha code

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Modified a very good php verification code (supporting Chinese ). Php captcha. class. php copy code :? PhpclassCaptcha {private $ width; private $ height; private $ codeNum; private $ code; private $ im; function _ const Php verification codeCaptcha.

This article describes the PHP implementation of the generation with background graphics verification code function. Share to everyone for your reference, specific as follows: We used to generate all of PHP is no background or the same color

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

Cases 1, produce a picture of PNG2. Set the background color for the picture3. Set font color and style4, generate a 4-digit random verification code5, the resulting each character adjusted rotation angle and position to the PNG picture6, add noise

PHP generated graphics verification code needs to use the PHP GD library and the session to the instance, so the GD library generated images to the user to see, and then by the user input validation submitted to the server and the session stored

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

This article describes the implementation of the user login based on PHP function, the project is divided into four parts: 1 front-end page production, 2 authentication code production, 3 to achieve registration landing, 4 function perfect. The

Php Verification CodeCaptcha. class. php Copy codeThe Code is as follows: Class Captcha { Private $ width; Private $ height; Private $ codeNum; Private $ code; Private $ im; Function _ construct ($ width = 80, $ height = 20, $ codeNum = 4) { $ This->

This time in writing PHP script, access to the Web front-end and web security issues more, then give us a brief talk about our site verification code verification process and security issues. From three aspects to talk about the use of verification