Yii操作数据库实现动态获取表名的方法,yii数据库
Yii操作数据库实现动态获取表名的方法,yii数据库
本文实例讲述了Yii操作数据库实现动态获取表名的方法。分享给大家供大家参考,具体如下:
yii 获取某个库中的表名,而且这个库不确定表的多少,此时没法按照gii去根据表去生成文件,这里有个方法去解决掉。
$sqls = "show tables"; $datebase = YII::app()->db_order->createCommand($sqls)->queryAll(); //获取表名
这里$datebase 就是所有的表名,我当前有4个库,一个网站公用这4个库,有时候会来回切换。db_order为main.php中定义的4个库中的一个,其他库分别为db db_order db_query db_log .然后你就可以把这个库中的所有表中的数据获取到。而不用去生成。
该方法一般用于游戏平台,比如我当前有一个库专门去存放订单的,呢么这个库架设是db_order 此时我就需要把当某个用户的所有充值的记录(订单)获取到
更多关于Yii相关内容感兴趣的读者可查看本站专题:《Yii框架入门及常用技巧总结》、《php优秀开发框架总结》、《smarty模板入门基础教程》、《php日期与时间用法总结》、《php面向对象程序设计入门教程》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
希望本文所述对大家基于Yii框架的PHP程序设计有所帮助。
您可能感兴趣的文章:
- Yii中Model(模型)的创建及使用方法
- PHP YII框架开发小技巧之模型(models)中rules自定义验证规则
- yii框架表单模型使用及以数组形式提交表单数据示例
- Yii数据库缓存实例分析
- Yii框架上传图片用法总结
- Yii开启片段缓存的方法
- 详解PHP的Yii框架中组件行为的属性注入和方法注入
- PHP的Yii框架中移除组件所绑定的行为的方法
- PHP的Yii框架中行为的定义与绑定方法讲解
- 详解在PHP的Yii框架中使用行为Behaviors的方法
- 解读PHP的Yii框架中请求与响应的处理流程
- PHP的Yii框架中使用数据库的配置和SQL操作实例教程
- YII动态模型(动态表名)支持分析

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

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

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics











Apple's latest releases of iOS18, iPadOS18 and macOS Sequoia systems have added an important feature to the Photos application, designed to help users easily recover photos and videos lost or damaged due to various reasons. The new feature introduces an album called "Recovered" in the Tools section of the Photos app that will automatically appear when a user has pictures or videos on their device that are not part of their photo library. The emergence of the "Recovered" album provides a solution for photos and videos lost due to database corruption, the camera application not saving to the photo library correctly, or a third-party application managing the photo library. Users only need a few simple steps

To handle database connection errors in PHP, you can use the following steps: Use mysqli_connect_errno() to obtain the error code. Use mysqli_connect_error() to get the error message. By capturing and logging these error messages, database connection issues can be easily identified and resolved, ensuring the smooth running of your application.

How to use MySQLi to establish a database connection in PHP: Include MySQLi extension (require_once) Create connection function (functionconnect_to_db) Call connection function ($conn=connect_to_db()) Execute query ($result=$conn->query()) Close connection ( $conn->close())

Using the database callback function in Golang can achieve: executing custom code after the specified database operation is completed. Add custom behavior through separate functions without writing additional code. Callback functions are available for insert, update, delete, and query operations. You must use the sql.Exec, sql.QueryRow, or sql.Query function to use the callback function.

JSON data can be saved into a MySQL database by using the gjson library or the json.Unmarshal function. The gjson library provides convenience methods to parse JSON fields, and the json.Unmarshal function requires a target type pointer to unmarshal JSON data. Both methods require preparing SQL statements and performing insert operations to persist the data into the database.

Through the Go standard library database/sql package, you can connect to remote databases such as MySQL, PostgreSQL or SQLite: create a connection string containing database connection information. Use the sql.Open() function to open a database connection. Perform database operations such as SQL queries and insert operations. Use defer to close the database connection to release resources.

MySQL is an open source relational database management system. 1) Create database and tables: Use the CREATEDATABASE and CREATETABLE commands. 2) Basic operations: INSERT, UPDATE, DELETE and SELECT. 3) Advanced operations: JOIN, subquery and transaction processing. 4) Debugging skills: Check syntax, data type and permissions. 5) Optimization suggestions: Use indexes, avoid SELECT* and use transactions.

PHP database connection guide: MySQL: Install the MySQLi extension and create a connection (servername, username, password, dbname). PostgreSQL: Install the PgSQL extension and create a connection (host, dbname, user, password). Oracle: Install the OracleOCI8 extension and create a connection (servername, username, password). Practical case: Obtain MySQL data, PostgreSQL query, OracleOCI8 update record.
