Table of Contents
实现PHP框架系列文章(6)mysql数据库方法,
您可能感兴趣的文章:
Home php教程 php手册 实现PHP框架系列文章(6)mysql数据库方法,

实现PHP框架系列文章(6)mysql数据库方法,

Jun 13, 2016 am 08:45 AM
mysql php database frame

实现PHP框架系列文章(6)mysql数据库方法,

实现一个mysql数据库封装需要考虑的问题

1.使用方便性

采用直接sql语句操作方式。只要会写sql语句,那么将没有其他学习成本。

uctphp框架提供的dba辅助封装类,用会之后将爱不释手。

使用前需要显示初始化并连接到数据库吗,当然不需要。

直到执行第一条sql语句之前,都不会去连接数据库,甚至不会new一个db对象。

dba将会在合适的时机去连接数据库并执行初始化字符编码操作。

查询语句。不需要new一个查询构造器也不提供链式操作方式,那样复杂且低效。

dba提供了以下的查询辅助函数。

//读一个值
Dba::readOne($sql);
//读一行
Dba::readRowAssoc($sql);
//读所有行
Dba::readAllAssoc($sql);
//读所有行的第一列
Dba::readAllOne($sql);
//在实际业务场景中,经常会有分页读取部分数据的情况。
//只要一个函数即可返回指定页码的数据内容和数据总条数
Dba::readCountAndLimit($sql, $page, $limit);
Copy after login

ps:以上部分函数可以提供一个map函数对返回数组的每一行进行加工处理。

写语句。为什么要区分read和write呢,显然可以扩展做到控制读写分离,双写等功能。

在有各种云数据库和数据库中间件的今天,在数据库层实现是更好的选择。

Dba::write($sql);
/* 直接插入或更新kv形式的array数组
会自动对value进行转义,也支持array类型的值。
如果自己写sql语句要注意使用addslashes或mysql_real_escape_string来保证安全
*/
Dba::insert($table, $insert); 
Dba::update($table, $update, $where);
/*
对批量插入数据有更高的效率
当然过多的行数应该用array_chunk来分批插入。
*/
Dba::insertS($table, $inserts);
Copy after login

2. 事务

使用pdo支持事务

Dba::beginTransaction();
Dba::commit();
Dba::rollBack();
Copy after login


3. 长时间运行

在一些需要长时间运行的场景如swoole服务,后台worker等,可能会出现数据库连接超时的情况。

当发现数据库连接超时,dba将会自动尝试重连。

以上内容是小编给大家介绍的PHP框架系列文章(6)mysql数据库方法,希望对大家有所帮助!

您可能感兴趣的文章:

  • php使用mysqli向数据库添加数据的方法
  • PHP使用mysqldump命令导出数据库
  • 1亿条数据如何分表100张到Mysql数据库中(PHP)
  • php页面,mysql数据库转utf-8乱码,utf-8编码问题总结
  • php实现mysql数据库连接操作及用户管理
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP and Python: Comparing Two Popular Programming Languages PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP's Current Status: A Look at Web Development Trends PHP's Current Status: A Look at Web Development Trends Apr 13, 2025 am 12:20 AM

PHP remains important in modern web development, especially in content management and e-commerce platforms. 1) PHP has a rich ecosystem and strong framework support, such as Laravel and Symfony. 2) Performance optimization can be achieved through OPcache and Nginx. 3) PHP8.0 introduces JIT compiler to improve performance. 4) Cloud-native applications are deployed through Docker and Kubernetes to improve flexibility and scalability.

PHP: A Key Language for Web Development PHP: A Key Language for Web Development Apr 13, 2025 am 12:08 AM

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

MySQL's Place: Databases and Programming MySQL's Place: Databases and Programming Apr 13, 2025 am 12:18 AM

MySQL's position in databases and programming is very important. It is an open source relational database management system that is widely used in various application scenarios. 1) MySQL provides efficient data storage, organization and retrieval functions, supporting Web, mobile and enterprise-level systems. 2) It uses a client-server architecture, supports multiple storage engines and index optimization. 3) Basic usages include creating tables and inserting data, and advanced usages involve multi-table JOINs and complex queries. 4) Frequently asked questions such as SQL syntax errors and performance issues can be debugged through the EXPLAIN command and slow query log. 5) Performance optimization methods include rational use of indexes, optimized query and use of caches. Best practices include using transactions and PreparedStatemen

PHP: The Foundation of Many Websites PHP: The Foundation of Many Websites Apr 13, 2025 am 12:07 AM

The reasons why PHP is the preferred technology stack for many websites include its ease of use, strong community support, and widespread use. 1) Easy to learn and use, suitable for beginners. 2) Have a huge developer community and rich resources. 3) Widely used in WordPress, Drupal and other platforms. 4) Integrate tightly with web servers to simplify development deployment.

The Enduring Relevance of PHP: Is It Still Alive? The Enduring Relevance of PHP: Is It Still Alive? Apr 14, 2025 am 12:12 AM

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP vs. Other Languages: A Comparison PHP vs. Other Languages: A Comparison Apr 13, 2025 am 12:19 AM

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP vs. Python: Core Features and Functionality PHP vs. Python: Core Features and Functionality Apr 13, 2025 am 12:16 AM

PHP and Python each have their own advantages and are suitable for different scenarios. 1.PHP is suitable for web development and provides built-in web servers and rich function libraries. 2. Python is suitable for data science and machine learning, with concise syntax and a powerful standard library. When choosing, it should be decided based on project requirements.

See all articles