Course 719
Course Introduction:Many students do not know enough about the operation of PHP files when they are basic in PHP. This lesson will take you to learn the basic operations of PHP files. The main functions used in PHP file operations are PHP file-related functions. So we will mainly talk about That is, various functions related to PHP files. I believe this course will make you more interested in PHP!
Course 20819
Course Introduction:Many students do not know enough about the operation of PHP files when they are basic in PHP. This lesson will take you to learn the basic operations of PHP files. The main functions used in PHP file operations are PHP file-related functions. So we will mainly talk about That is, various functions related to PHP files. I believe this course will make you more interested in PHP!
Course 16476
Course Introduction:"Memcached Command Operation Manual" is the latest official Memcached online reference manual. In this Memcached document, various Memcached operation commands are provided with Chinese explanations. You will learn how to use Memcached to reduce database load and improve performance. It is a must-have online query reference document tutorial for Memcached learners and users!
Course 3614
Course Introduction:Master how to use the DOM methods natively provided by JavaScript to quickly obtain specified elements or collections of elements from the page, and process the attributes and content of the elements. And through a practical case of online intelligent customer service, we will deepen everyone's understanding of DOM operations and become familiar with the application scenarios of DOM operations!
Course 55138
Course Introduction:"Redis Command Operation Chinese Manual" is the latest official Redis online reference manual. Redis is an in-memory cache database. This manual contains various Redis operation commands with Chinese explanations. You will learn to master the efficient use of Redis in the data server. It is a must-have online query for Redis learning and users. Refer to the documentation tutorial!
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Course Introduction:PHP database insertion operation: How to use the mysqli_insert_id function to obtain the auto-incrementing primary key value. In PHP development, interaction with the database is a very common operation. Among them, inserting data is the most commonly used operation. When inserting data, we often use auto-increment primary keys, and obtaining auto-increment primary key values is a very important operation. This article will teach you how to use the mysqli_insert_id function to obtain the auto-increment primary key value, helping you handle database operations more flexibly during development. 1.
2023-08-02 comment 0 923
Course Introduction:PHP is one of the most commonly used server-side programming languages, and most web development is inseparable from PHP. In PHP, arrays are one of the most basic data structures and can be initialized and manipulated in a variety of ways. This article explains how to create and manipulate arrays keyed by values in PHP and discusses the practicality and scope of this approach. PHP Array Basics In PHP, an array is an ordered collection of key-value pairs, where each element is identified by a unique key. For example, the following is a PHP containing three elements
2023-04-25 comment 0 341
Course Introduction:Using JavaSDK to connect Qiniu Cloud KV storage: How to implement high-speed key-value operations? Introduction: In the context of the cloud computing era, enterprises are increasingly inclined to store data in the cloud instead of traditional local storage. Qiniu Cloud KV storage is a cloud storage service based on key-value pairs, providing high-speed, safe and reliable data storage and access functions. This article will introduce how to use JavaSDK to connect Qiniu Cloud KV storage to achieve high-speed key-value operations. 1. Preparation: Register a Qiniu Cloud account and create a new KV storage space
2023-07-05 comment 0 1124
Course Introduction:如图,错误提示,有2条记录由于键值冲突无法追加。这个追加查询是追加4条记录的,若按【是】就只追加2条,如果按【否】就不执行追加查询(追加0条)。方法一:原因三,外键缺少记录。如图,订单表和供应商表设置了关系,供应商表的主键供应商与订单表的主键供应商字段作了关联,实施参照完整性,所以订单表的供应商字段是外键。追加表中有一条含有【戊供应商】的记录,而供应商表没有对应的记录,这也是会造成键值冲突的。应对三,补值。如图,在供应商表补充【戊供应商】的记录。方法二:原因一,追加表中本身就存在重复键值。如图,
2024-05-24 comment 0 819
Course Introduction:Application of Redis key-value pair operations in Java development: How to quickly access data In Java development, data access operations are a very important task. How to access data quickly and efficiently is a key issue that developers are concerned about. As a high-performance in-memory database, Redis has the characteristics of fast read and write operations, so it is widely used in data caching and storage implementation in Java development. Redis is an in-memory database that supports key-value pair access. It stores data in memory so the data's
2023-08-01 comment 0 488