Course Intermediate  11367

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Course Advanced  17676

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Course Advanced  11383

Course Introduction："Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.

Course Introduction：There are many ways to implement the verification code function, including digital verification codes, graphic verification codes, text verification codes, etc. In this section, a verification code generated using image processing technology is introduced.

2017-04-24 comment 0  2167

Course Introduction：PHP and CGI verification codes and malicious attack prevention technologies In recent years, with the rapid development of the Internet, more and more websites and applications are facing various network security threats. In order to protect users' privacy and data security, developers have to seek various methods to improve website security. This article will introduce the verification code technology in PHP and CGI and how to prevent malicious attacks. CAPTCHA TECHNOLOGY CAPTCHA is a technology used to verify the identity of a user. It is usually an image consisting of a randomly generated text or number that the user needs

2023-07-21 comment 0  1269

Course Introduction：XML validation technology in Python XML (eXtensibleMarkupLanguage) is a markup language used to store and transmit data. In Python, we often need to validate XML files to ensure that they comply with predefined structures and specifications. This article will introduce XML validation technology in Python and provide code examples. Use DTD to verify that XMLDTD (DocumentTypeDefinition) is a definition X

2023-08-09 comment 0  1659

Course Introduction：A complete guide to PHP image verification code functions: Verification code generation skills for imagecreatetruecolor, imagestring, imagejpeg and other functions. Specific code examples are required. Introduction: Image verification code is a commonly used verification method on websites to distinguish human users from machine programs. PHP provides multiple functions to generate and process image verification codes. This article will introduce in detail the use of imagecreatetruecolor, imagestring, image

2023-11-18 comment 0  758

Course Introduction：PHP development skills: How to implement the verification code function Verification code (CAPTCHA) is a common technology used to verify user identity and is widely used in website development. Verification codes can effectively prevent malicious registration by robots, brute force cracking and other malicious behaviors, and improve the security of the website. This article will introduce how to use PHP language to implement the verification code function and provide specific code examples. 1. Generate verification code Generating verification code is the first step to realize the verification code function. We can create pictures through the GD library and draw randomly generated

2023-09-21 comment 0  2158