how to implement captcha in php

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

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),

Many of the online simulation login programs, mostly through the service program Apache and other operations, get to the verification code displayed on the Web page, and then fill in and then post out, although it looks very friendly, but since the

Many of the online simulation login programs, mostly through the service program Apache and other operations, get to the verification code displayed on the Web page, and then fill in and then post out, although it looks very friendly, but since the

/*** 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,

Teach you how to implement verification code PHP, PHP implementation Verification code Verification code in the form implementation more and more, but with JS write verification code, always feel inconvenient, so learned the next PHP implementation

Many of the online analog login procedures, mostly through the service program, such as Apache operation, get to the verification code displayed on the Web page, and then fill in the post out, so although it looks very friendly, but since the analog

Implement the ajax pop-up window login function in ECSHOP and ecshopajax pop-up window Login In the previous article, we introduced how to use the openSpeDiv method to implement the Ecshop logon window. Click here for reference. The following

This article is mainly to share with you laravle5.4 data validation and user authentication implementation method, hope to help everyone. 1. Planning for routing Login Module Route::match ([' Get ', ' post '], '/admin/login ', '

Teach you how to implement the verification code in php and implement the verification code in php. It is inconvenient to teach you how to implement a verification code in php. more and more verification codes are implemented in forms, so I learned