Course Intermediate  11215

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  17559

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  11269

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：jquery form validation: jquery form validation common form validation classes, with this, general validation is all available. : Copy the code as follows: <?php /** * Page function: Common form verification class * Author: Xinran Suifeng * Creation time: 2006-3-6 * QQ: 276624915 */ class class_post { //Verify whether it is specified Length of alphanumeric combination function fun_text1($num1,$num2,$str) {

2016-07-29 comment 0  831

Course Introduction：JavaScript is a programming language widely used in web development. It can be used in conjunction with HTML and CSS to bring more interactivity and dynamic effects to web pages. In addition to this, JavaScript is widely used in many other fields. This article will introduce in which application areas JavaScript is more common. 1. Web development field 1. Web page interaction and dynamic special effects JavaScript brings many interactive and dynamic special effects to the web page, realizing a rich user experience. For example, form validation, drop-down

2023-04-23 comment 0  2073

Course Introduction：When using Python to process strings, you often need to verify whether a string only contains numbers and letters, or whether it contains other special characters. String validation is very important in various scenarios, such as input validation, data processing and filtering. In this article, we will explore a Python program to test whether a given string contains only alphanumeric characters. We'll discuss the criteria for valid strings, provide examples of valid and invalid strings, and introduce an efficient way to solve this problem using built-in string methods. Understanding the Problem Before we start solving the problem, let's define a criterion for a valid string containing only numbers and letters - the string should not contain any spaces or special characters. The string should consist of alphanumeric characters (a-

2023-08-30 comment 0  1114

Course Introduction：The combination of RiSearchPHP and word segmentation technology requires specific code examples to achieve efficient Chinese search. In recent years, with the development of Internet technology, more and more Chinese content has been stored in various types of databases. However, traditional English search engines have relatively weak support for Chinese, and often have problems such as word segmentation errors or missing words, resulting in low accuracy of search results. In order to solve this problem, we can use the combination of RiSearchPHP and word segmentation technology to achieve efficient Chinese search. RiSearch

2023-10-03 comment 0  1520

Course Introduction：thinkphp is a very excellent PHP framework with rich functions and easy to expand and deploy. However, sometimes we need to remove some of the default limitations of thinkphp to meet our actual needs. First, let’s talk about the default restrictions of thinkphp. In thinkphp, some default restrictions include: 1. Only lowercase letters are allowed in controller method names; 2. Special characters are automatically filtered in URL parameters; 3. The default upload file size limit is 2M; 4. The verification code defaults to an alphanumeric combination;

2023-05-26 comment 0  628