2fa verification

Phprequire_once' String.func.php ';//Verify code via GD library/** * Add validation text * @param int $type * @param int $length*/functionBuildrandomstring ($type=1,$length=4){ $row=''; if($type==1){ $row=Join('',Range(0, 9)); }Elseif($type==2){ $row=Join('',Array_merge(Range(' A ', ' Z '),Range(' A ', ' Z '))); }Elseif($type==3){ $row=Join('',Array_merge(Range(' A ', ' Z '),Range(' A ', ' Z '),Range(0, 9))); }; $row=Str_shuffle($row); $row=substr($row, 0,$length); ret

The example of this article for everyone to share the code of PHP generated verification codes, for your reference, the specific content as follows The above is the whole content of this article, I hope that you learn PHP programming help. The above describes the PHP generated cool four character verification code, including the verification Code, PHP co

image.func.php The above describes the PHP implementation to generate verification code instance sharing, including PHP, verification code aspects of the content, I hope that the PHP tutorial interested in a friend helpful.

SMS Verification CodeSMS Verification code is to call some interface to send SMS, SMS verification code in the login, registration and other operations to use the most extensive, this section of this article demonstrates how to use Java to make a simple SMS verification code login.I'm using a short message interface (n

Php implements the Chinese character verification code and formula verification code. Php implements the Chinese character verification code and the formula verification code. This document describes how php implements the Chinese character verification code and the formula

Best Practice series (4)-PHP Security three axes: filtering, verification and escape verification Laravel underlying field verification implementation 2. verification data PHP native implementation Verification of input data is also important. Unlike filtering,

PHPWind9.0 manually blocks the verification code to solve the problem of disabling the verification code in the background but still displaying it. phpwind9.0 Verification Code Recently, a product was designed and requires POST login to PHPWind. However, PHPWind9 (pw9) has its own security policy. For details, you can go to the phpwind official forum. The existen

PHP implementation of Chinese character verification Code and Formula verification code method, PHP Chinese character Verification Code calculation This paper introduces the method of implementing Chinese character verification Code and arithmetic verification code in PHP.

Verification Code Generation Program I do not introduce here, you can refer to http://www.111cn.net/phper/phpanqn/46698.htm below to introduce a simple The code is as follows Copy Code Session_Start ();Settings: You can modify the parameters of the verification code picture here$image _width = 120;$image _height = 40;$characters _on_image = 6;$font = './monofont.ttf ';The follow

Background: Said before the project, lazy login module did not add verification code, think of or add, find the next TP document, found that there is integration, special record.First, instantiate the class that generated the verification code (this method is easy to access in Indexcontroller)[PHP] View plaincopy /** * * Verification Code generation */

A dynamic random verification code can be generated in just a few steps, with the final effect such as:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/74/D9/wKioL1YscJvQIeqDAAF7uMWlQBA873.jpg "title=" Cheetah 20151025140145.png "alt=" Wkiol1yscjvqieqdaaf7umwlqba873.jpg "/>One front desk Display page login.jspWhere the verification code is shown is a picture, the link is to generate a code for the

Before the output verification code used a method, in the foreground with JS to generate a code string, and then passed to the background with PHP output CAPTCHA code image. This does not require the use of $_session to pass the verification code value, directly using JS to compare the generated string and the input string is equal. This article demonstrates 5 kinds of authentication codes with an example,

Zend Framework generates a verification code and implements the verification code verification function (with the demo source code download), zenddemo This example describes how Zend Framework generates a verification code and implements the verification code function. We wi