how to make captcha in php

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

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

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

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),

How to change the size of PHP captcha font [color= #0000FF] This verification code picture shows the number is too small, how to change the size of the font in the following code, the number becomes larger [/color] Generate a Captcha

Many of the online simulation login programs, mostly through the service program Apache and other operations, get to the verification code displayed on the page, and then fill in and then post outThis article provides a program example, the idea is

/*** Demo Login*///Initialize Variables$cookie _file ="Tmp.cookie";$login _url ="http://xxx.com/logon.php";$verify _code_url ="http://xxx.com/verifyCode.php";Echo"getting cookie...\n";$CURLJ = Curl_init ();$timeout =5;curl_setopt ($curl, Curlopt_url,

Problem:Fatal error:call to undefined function think\imagettftext () in/var/www/webreg/thinkphp/library/think/ Verify.class.php on line 143See Phpinfo () and learned that GD does not have freetype supportSolve:First install freestyle,php-gd Ensure

Login will have a verification code, read the code, its src point to a PHP address (may not be a PHP address, so src="/login/verificationCode?0.8308222951445625"), open this address alone, there is garbled, ask how can you pull this picture down?