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)

Hot Topics

Java Tutorial
1657
14
PHP Tutorial
1257
29
C# Tutorial
1230
24
MySQL and phpMyAdmin: Core Features and Functions MySQL and phpMyAdmin: Core Features and Functions Apr 22, 2025 am 12:12 AM

MySQL and phpMyAdmin are powerful database management tools. 1) MySQL is used to create databases and tables, and to execute DML and SQL queries. 2) phpMyAdmin provides an intuitive interface for database management, table structure management, data operations and user permission management.

Oracle's Role in the Business World Oracle's Role in the Business World Apr 23, 2025 am 12:01 AM

Oracle is not only a database company, but also a leader in cloud computing and ERP systems. 1. Oracle provides comprehensive solutions from database to cloud services and ERP systems. 2. OracleCloud challenges AWS and Azure, providing IaaS, PaaS and SaaS services. 3. Oracle's ERP systems such as E-BusinessSuite and FusionApplications help enterprises optimize operations.

The Compatibility of IIS and PHP: A Deep Dive The Compatibility of IIS and PHP: A Deep Dive Apr 22, 2025 am 12:01 AM

IIS and PHP are compatible and are implemented through FastCGI. 1.IIS forwards the .php file request to the FastCGI module through the configuration file. 2. The FastCGI module starts the PHP process to process requests to improve performance and stability. 3. In actual applications, you need to pay attention to configuration details, error debugging and performance optimization.

Explain the purpose of foreign keys in MySQL. Explain the purpose of foreign keys in MySQL. Apr 25, 2025 am 12:17 AM

In MySQL, the function of foreign keys is to establish the relationship between tables and ensure the consistency and integrity of the data. Foreign keys maintain the effectiveness of data through reference integrity checks and cascading operations. Pay attention to performance optimization and avoid common errors when using them.

How to safely store JavaScript objects containing functions and regular expressions to a database and restore? How to safely store JavaScript objects containing functions and regular expressions to a database and restore? Apr 19, 2025 pm 11:09 PM

Safely handle functions and regular expressions in JSON In front-end development, JavaScript is often required...

Compare and contrast MySQL and MariaDB. Compare and contrast MySQL and MariaDB. Apr 26, 2025 am 12:08 AM

The main difference between MySQL and MariaDB is performance, functionality and license: 1. MySQL is developed by Oracle, and MariaDB is its fork. 2. MariaDB may perform better in high load environments. 3.MariaDB provides more storage engines and functions. 4.MySQL adopts a dual license, and MariaDB is completely open source. The existing infrastructure, performance requirements, functional requirements and license costs should be taken into account when choosing.

SQL vs. MySQL: Clarifying the Relationship Between the Two SQL vs. MySQL: Clarifying the Relationship Between the Two Apr 24, 2025 am 12:02 AM

SQL is a standard language for managing relational databases, while MySQL is a database management system that uses SQL. SQL defines ways to interact with a database, including CRUD operations, while MySQL implements the SQL standard and provides additional features such as stored procedures and triggers.

Redis: Understanding Its Architecture and Purpose Redis: Understanding Its Architecture and Purpose Apr 26, 2025 am 12:11 AM

Redis is a memory data structure storage system, mainly used as a database, cache and message broker. Its core features include single-threaded model, I/O multiplexing, persistence mechanism, replication and clustering functions. Redis is commonly used in practical applications for caching, session storage, and message queues. It can significantly improve its performance by selecting the right data structure, using pipelines and transactions, and monitoring and tuning.

See all articles