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Article Introduction：In php, GD library is used for verification code, and phpgd library is used for verification code. Use GD library to do verification code in php, phpgd library verification code php require_once 'string.func.php';//Use GD library to do verification code/** *Add verification text* @param int $type * @param int $length */function

2016-07-12 comment 0  974

Article Introduction：I encountered a common but difficult problem when developing a user registration and logging into a system: how to effectively prevent robots from automatically registering and logging in. I tried multiple verification methods, but it didn't work well until I discovered this powerful PHP verification code library of lsmverify/lsmverify. By using Composer to install and configure this library, I successfully implemented efficient verification code function in the project, greatly improving the security of the system.

2025-04-18 comment 0  287

Article Introduction：Simple verification code generation, simple verification code generation. Simple verification code generation, simple verification code generation for($i= 0;$i 5;$i ){ $rand .= dechex( rand( 1, 15)); // Random number hexadecimal 1-F generation 5} $im = imagecreatetruecolor (100, 30)

2016-07-12 comment 0  1005

Article Introduction：Zend Framework generates verification codes and implements verification code verification functions (with demo source code download), zenddemo. Zend Framework generates verification codes and implements verification code verification functions (with demo source code download), zenddemo This article describes how Zend Framework generates verification codes and implements verification code verification functions.

2016-07-12 comment 0  1134

Article Introduction：Simple and secure PHP verification code with calling method, PHP verification code with calling method. Simple and secure PHP verification code with calling method, PHP verification code with call. 1. Verification code example 2. PHP verification code class, secoder.class.php php /** * Security verification code * * Secure verification

2016-07-12 comment 0  984

Article Introduction：PHP implementation is suitable for custom verification code classes, php verification code. PHP implementation is suitable for custom verification code classes, php verification code. The example of this article shares the PHP verification code class for everyone, and uses objects to implement the verification code class for your reference. The specific content is as follows

2016-07-06 comment 0  1338

Article Introduction：A practical php verification code function, php verification code. A practical php verification code function, php verification code This article shares several php verification code functions for everyone, they are very practical, the specific content is as follows Code segment 1: Simple php verification code function

2016-07-12 comment 0  1020

Article Introduction：thinkphp3.2 click refresh to generate verification code, thinkphp3.2 verification code. thinkphp3.2 click refresh to generate verification code, thinkphp3.2 verification code. Before introducing how to use thinkphp3.2 verification code, I will first introduce the ThinkPHP verification code in detail. The specific content is as follows T

2016-07-12 comment 0  941

Article Introduction：PHP generates a simple example of verification code, php verification code example. A simple example of generating a verification code with PHP. PHP verification code example. After reading it, you will know how to hit me. Don’t talk too much, let’s do it (people don’t talk much) 1.0 First look at the code phpheader("Content

2016-07-06 comment 0  1076

Article Introduction：Simple implementation method of thinkPHP3.1 verification code, thinkphp3.1 verification code. A simple implementation method of thinkPHP3.1 verification code, thinkphp3.1 verification code This article describes a simple implementation method of thinkPHP3.1 verification code. Share it with everyone for your reference, the details are as follows:

2016-07-12 comment 0  858

Article Introduction：Very practical php verification code class, very practical php verification code. Very practical php verification code class, very practical php verification code This example shares the php verification code class for your reference. The specific content is as follows php /** * * @author Administrator * *

2016-07-12 comment 0  1060

Article Introduction：1. The graphic verification code does not appear in the first three submissions. 2. The graphic verification code appears after the third time and can be submitted only after verification. What is the basis for counting the number of submissions? IP? Cookie? Session? Or other ideas. If it is a SMS verification code channel, others use dynamic How to control if the IP library is used to attack? http://m.rong3...

2016-07-06 comment 0  1450

Article Introduction：PHP generates a simple example of verification code, php verification code example. A simple example of generating a verification code with PHP. PHP verification code example. After reading it, you will know how to hit me. Don’t talk too much, let’s do it (people don’t talk much) 1.0 First look at the code phpheader("Content

2016-07-12 comment 0  1045

Article Introduction：PHP implementation is suitable for custom verification code classes, php verification code. PHP implementation is suitable for custom verification code classes, php verification code. The example of this article shares the PHP verification code class for everyone, and uses objects to implement the verification code class for your reference. The specific content is as follows

2016-07-12 comment 0  956

Article Introduction：PHP generates verification codes, class sharing of thumbnails and watermarks, and verification code watermarks. Class sharing for php to generate verification codes, thumbnails and watermarks. Verification code watermark encapsulates a class that can generate verification codes, thumbnails and watermarks. Share it with everyone. phpclass image{ sessio

2016-07-12 comment 0  1146

Article Introduction：Write php to generate cool verification code, php cool verification code. Write php to generate cool verification code, php cool verification code 1? php 2 $im =imagecreate(200,100);//Generate canvas 3 imagecolorallocate($im,0,0,0);//Background color 4 $white = imagecolorallocate(

2016-07-12 comment 0  877

Article Introduction：Generate a simple verification code based on PHP, PHP generates a simple verification code. Generate a simple verification code based on PHP. PHP generates a simple verification code. Without further ado, I will post the code directly for you. The specific code is as follows: for($i=0;$i5;$i ){$rand .= dechex(rand(

2016-07-12 comment 0  1107

Article Introduction：How to use Python to crack verification code? In our daily use of the Internet, we often encounter various forms of verification codes. Recently, some users uploaded...

2025-04-01 comment 0  797

Article Introduction：The function of writing login verification code in PHP is attached with the calling method and PHP verification code. PHP writing login verification code function. Attached is the calling method, php verification code. This article shares an example of a login verification code function written in PHP for your reference. The specific content is as follows ShowKey.php

2016-07-12 comment 0  1174

Article Introduction：php generates a cool four-character verification code, php generates a cool verification code. PHP generates a cool four-character verification code, PHP generates a cool verification code. This example will share with you the implementation code of PHP generating verification code for your reference. The specific content is as follows: php$im=imagec

2016-07-12 comment 0  942