Yii 包含了一个建立在 PHP PDO 之上的数据访问层 (DAO)。DAO为不同的数据库提供了一套统一的API。其中 ActiveRecord 提供了数据库与模型(MVC 中的 M,Model) 的交互,QueryBuilder 用于创建动态的查询语句。 DAO提供了简单高效的SQL查询,可以用在与数据库交互的各个地方....
建立数据库连接(Connecting to Databases) 活动记录 Active Record 默认使用 db 组件 作为连接器 DB connection 访问和操作数据库数据。 基于数据库访问中的解释,你可以在系统配置中这样配置 db 组件。return [ 'components' => [ 'db' => [ 'class' => 'yii\db\Connection', 'dsn' => 'mysql:host=...
上面配置的数据库连接可以在应用中通过Yii::$app->db表达式访问。 补充:config/db.php将被包含在应用配置文件config/web.php中,后者指定了整个应用如何初始化。请参考配置章节了解更多信息。 创建活动记录 创建一个继承自活动记录类的类Country,把它放在models/Country.php文件,去代表和读取country表的数据。 <?phpn...
建立数据库连接(Connecting to Databases) 活动记录 Active Record 默认使用 db 组件 作为连接器 DB connection 访问和操作数据库数据。 基于数据库访问中的解释,你可以在系统配置中这样配置 db 组件。return [ 'components' => [ 'db' => [ 'class' => 'yii\db\Connection', 'dsn' => 'mysql:host=...
(2014). Working with Databases. In: PHP for Absolute Beginners. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4302-6814-7_6 Download citation .RIS .ENW .BIB DOIhttps://doi.org/10.1007/978-1-4302-6814-7_6 Published30 July 2014 Publisher NameApress, Berkeley, CA Print ISBN978-...
or create an application in Cloud Platform, you have several environments you can use to develop and manage your application, with each environment having its own database allowing your application to have several databases associated with it, depending on which environment you are working in. ...
NotORMis a PHP library for simple working with data in the database. The most interesting feature is a very easy work with table relationships. The overall performance is also very important and NotORM can actually run faster than a native driver. NotORM for databases is likeSimpleXMLfor XML...
Use this SQL to determine your databases character set encoding: SELECT value FROM nls_database_parameters WHERE parameter = 'NLS_CHARACTERSET' Given lack of support for NCLOBs in PHP, you may want to consider using Unicode encoding as the database character, such as UTF-8, which can be ...
Gary Logue is having issues with: What i am talking about is "Working with results" challenge that is in PHP path > Integrating php with databases. I am not sure what...
Coding Fundamentals Databases & SQL WordPress This post is part of a series called Understanding and Working with Data in WordPress . Understanding and Working with Posts in WordPress Understanding and Working with Taxonomies and Terms in WordPress So far in this series, we've looked at the main...