Article Introduction：When introducing an external verification code class, you need to make modifications in the imported external verification code class file.

2016-12-29 comment 0  1253

Article Introduction：//Verification code class class ValidateCode { private $charset =

2017-09-12 comment 0  1270

Article Introduction：//Verification code class class ValidateCode { private $charset = 'abcdefghkmnprstuvwxyzABCDEFGHKMNPRSTUVWXYZ23456789';//Random factor private $code;//Verification code private $codelen = 4;//Verification code length private $width = 130;//Width private $ height = 50;//height

2017-10-05 comment 0  1556

Article Introduction：The example of this article describes the verification code tool class encapsulated in PHP. Share it with everyone for your reference, as follows: <?php//Verification code tool class class Captcha{ //Attributes private $width; private $height; private $fontsize; private $pixes; private $lines; private $str_len; / * *Construction

2017-02-27 comment 0  1201

Article Introduction：In login authentication systems such as website or application login, registration, and password retrieval, the verification code function has become a common user verification method. The verification code function can effectively prevent malicious attacks and robot attacks, and protect user data and system security. This article will introduce how to use the ThinkPHP6 framework to implement the verification code function. 1. Introduction to the Verification Code Function of ThinkPHP6 The verification code function in the ThinkPHP6 framework can be implemented by using the thinkcaptchaCaptcha class. This class provides

2023-06-21 comment 0  3314

Article Introduction：A few days ago, I wrote a verification code technology that mixed numbers and letters. Today, I wrote a verification code that is purely numerical. Write a class here first

2017-01-13 comment 0  1105

Article Introduction：Verification code is indispensable in PHP websites. It can prevent malicious registration or submission, malicious cracking of passwords, ticket fraud, forum flooding, page brushing, etc. Verification code can also reduce server pressure. Then PHP Chinese website shares 10 good ones. The PHP verification code class is available for you to download and use.

2017-05-19 comment 0  6782

Article Introduction：This article shares with you a verification code generation class that integrates 1: lowercase Pinyin; 2: uppercase Pinyin; 3: numbers; 4: Chinese characters. The examples in this chapter will also include a scenario where mvc uses verification code verification. It has a certain reference value. Let’s take a look at it with the editor. What I will share with you this time is a verification code generation class that integrates 1: Lowercase Pinyin 2: Uppercase Pinyin 3: Number 4: Chinese characters. Judging from the title, it feels very It looks ordinary, yes it is very ordinary, but when generating this verification code class, you can specify the rules of the verification code return format through parameters. More importantly, I hope it can bring you...

2017-06-11 comment 0  2327

Article Introduction：Solution to the problem that the PHP verification code cannot be loaded: 1. Check whether the paths of the verification code class and verification code font introduce errors; 2. Place the header before any actual output; 3. Check whether the encoding format of all files is uniform; 4. Turn on the php gd2 extension; 5. Delete all line breaks in the file, etc.

2021-03-19 comment 0  4584

Article Introduction：How to solve common problems with ThinkPHP5 verification code Verification code is a commonly used security measure that can effectively prevent websites from being maliciously attacked. In ThinkPHP5, verification code generation and verification can be implemented using the built-in captcha class. I believe that all developers will also encounter some common problems when developing verification codes. Let’s answer them one by one below. Problem 1: The verification code always fails to pass verification. When performing verification, if the verification code fails to pass verification, it is most likely because of the verification code parameter name passed by the front desk and the background reception

2023-04-14 comment 0  861

Article Introduction：<?php/** Captcha 驗證碼類* Date: 2011-02-19* Author: fdipzone*/class Captcha{ //class start private $sname = ''; public function __construct($sname=''){ // $sname captcha session name $this->

2018-06-11 comment 0  1687

Article Introduction：Below, the ThinkPHP tutorial column will introduce you to the verification code of the ThinkPHP framework. I hope it will be helpful to friends in need! The Think\Verify class can support the generation and verification functions of verification codes.

2020-10-28 comment 0  4248

Article Introduction：When it comes to verification codes, I believe everyone is familiar with it. In our daily development work, verification codes are used in too many places, such as user login, user registration, etc. It can prevent malicious registration or registration of forms. Submit to prevent malicious cracking of passwords, ticket swiping, page swiping, etc. The verification code can also reduce server pressure. Today I will explain to you the calls of the verification code class.

2017-08-14 comment 0  1368

Article Introduction：The specific effects are as follows: Step 1: Tool class This tool class is the core of generating verification code images. It can be copied directly to the project without modification; all the parameters that can be personalized are provided by the API, such as font size, background color, etc. The number of interference lines, height and width, etc. can be set according to your own needs. Detailed comments are added to almost every line of the code. If you encounter special personalized needs, you can adjust this tool class to achieve it. packagecom.feng.util;/***@returnnull*@authorLadidol*@description*@date2022/4/1122:15*/importjava.awt.*;im

2023-05-17 comment 0  1391

Article Introduction：1. Use metaclass to verify subclasses. Whenever we define a new class, the metaclass will run Yazheng code to ensure that the new class conforms to the specified specifications. After the Python system finishes processing the class statement of the subclass, it will call the __new__ method of the metaclass. The metaclass can obtain the name, parent and attributes of the subclass and grandchild class through the __new__ method. This eliminates the need for us to put the verification code in the __init__ method of this class and wait until the object is constructed before verifying. In the following example, a subclass with less than 3 edges is defined, and the class statement is concluded

2017-07-20 comment 0  1568

Article Introduction：This article shares with you a verification code generation class that integrates 1: lowercase Pinyin; 2: uppercase Pinyin; 3: numbers; 4: Chinese characters. The examples in this chapter will also include a scenario where mvc uses verification code verification. It has certain reference value. Let’s take a look at it with the editor.

2017-07-03 comment 0  1927

Article Introduction：In a previous article, we introduced a tutorial on calling text in the PHP verification code class. I believe everyone has a certain understanding of verification codes. It can prevent malicious registration or submission of forms, malicious cracking of passwords, ticket fraud, Refreshing the page, etc., through verification code can also reduce the pressure on the server. Today I will introduce to you the use of PHP verification code style!

2017-08-15 comment 0  1608

Article Introduction：This article shares with you a verification code generation class that integrates 1: lowercase Pinyin; 2: uppercase Pinyin; 3: numbers; 4: Chinese characters. The examples in this chapter will also include a scenario where mvc uses verification code verification. It has certain reference value. Let’s take a look at it with the editor.

2017-05-06 comment 0  1702

Article Introduction：Among computer operating systems, WIN7 system is a very classic computer operating system, so how to install win7 system? The editor below will introduce in detail how to install the win7 system on your computer. 1. First download the Xiaoyu system and reinstall the system software on your desktop computer. 2. Select the win7 system and click "Install this system". 3. Then start downloading the image of the win7 system. 4. After downloading, deploy the environment, and then click Restart Now after completion. 5. After restarting the computer, the Windows Manager page will appear. We choose the second one. 6. Return to the computer pe interface to continue the installation. 7. After completion, restart the computer. 8. Finally come to the desktop and the system installation is completed. One-click installation of win7 system

2023-07-16 comment 0  1204

Article Introduction：:This article mainly introduces php-insertion sort. Students who are interested in PHP tutorials can refer to it.

2016-08-08 comment 0  1059