第一次使用YII，YII完全是OOP的，性能、安全性都比别的PHP框架要好（YII官网有比较）。
YII的特征：
Yii comes with a full stack of features needed by today's Web 2.0
application development. Below is a short list of these features.
- Model-View-Controller (MVC) design pattern: Yii adopts this proven technique in Web programming which can better separate logic from presentation.
完全的MVC设计
- Database Access Objects (DAO) and Active Record: Yii allows
developers to model database data in terms of objects and save their
effort of writing long and repetitive SQL statements.
数据库访问对象和活动记录
- Integration with jQuery: as one of the most popular JavaScript framework, jQuery enables writing highly efficient and versatile JavaScript interfaces.
内建Jquery支持
- Form input and validation: Yii makes collecting form input
extremely easy and safe. Yii comes with a set of validators which can
be used to ensure validity of input data, and it also has helper
methods and widgets to indicate errors when validation fails.
表达元素的检查
- Web 2.0 widgets: powered by jQuery, Yii comes with a set of Web 2.0 widgets, such as auto-complete input field, treeview, and so on.
web2.0支持
- Authentication and authorization: Yii has built-in authentication support. It also supports authorization via hierarchical role-based access control (RBAC).
内建认证支持
- Theming: it enables change of the outlook of an Yii application instantly.
主题
- Web services: Yii supports automatic generation of complex WSDL service specifications and management of Web service request handling.
web service支持
- Internationalization (I18N) and localization (L10N): Yii supports message translation, date and time formatting, number formatting, and interface localization.
国际化
- Layered caching scheme: Yii supports data caching, page
caching, fragment caching and dynamic content. The storage medium of
caching can be changed easily without touching the application code.
缓存
- Error handling and logging: errors are handled and presented
more nicely, and log messages can be categorized, filtered and routed
to different destinations.
错误处理和日志
- Security: Yii is equipped with many security measures to
help secure Web applications to prevent cyber attacks. These measures
include cross-site scripting (XSS) prevention, cross-site request
forgery (CSRF) prevention, cookie tampering prevention, etc.
安全
- Compliance to XHTML: Code generated by Yii components and command line tools complies to the XHTML standard.
服从XHTML
- Automatic code generation: Yii provides the tools that can
automatically generate the code that you need, such as a skeleton
application, CRUD applications, etc.
自动代码生成
- Purely object-oriented: Yii framework sticks to strict OOP
paradigm. It does not define any global function or variable. And the
class hierarchy that it defines allows maximum reusability and
customization.
纯面向对象
- Friendly with third-party code: Yii is carefully designed to
work well with third-party code. For example, you can use code from
PEAR or Zend Framework in your Yii application.
友好的第三方代码支持
- Detailed documentation: every single method or property is
clearly documented. A comprehensive tutorial is also provided together
with other minor tutorials.
详细文档
- Extension library: Yii provides an extension library consisting of user-contributed components. This makes the above feature list never ending.
扩展库
一、下载：
svn
注意，YII需要一定的系统环境。
测试环境地址：
如下图：
php.ini文件需要打开一部分动态链接库、以便满足YII的运行。
二、创建第一个应用程序：
1）E:\AppServ\www>dir
Volume in drive E is Study
Volume Serial Number is F42A-75EA
Directory of E:\AppServ\www
2009-04-21 01:53
.
2009-04-21 01:53 ..
2009-04-18 19:51 .metadata
2009-04-08 02:11 appserv
2009-04-21 01:54 blog
2009-04-08 02:11 cgi-bin
2008-05-08 18:52 4,676 index.php
2009-04-18 19:43 myproject
2005-06-13 10:19 18 phpinfo.php
2009-04-08 02:11 phpMyAdmin
2009-05-29 23:16 YII
2 File(s) 4,694 bytes
9 Dir(s) 96,134,774,784 bytes free
2）
E:\AppServ\www>E:\AppServ\www\YII\framework\yiic webapp center
Create a Web application under 'E:\AppServ\www\center'? [Yes|No] y
mkdir E:/AppServ/www/center
mkdir E:/AppServ/www/center/assets
generate assets/.yii
mkdir E:/AppServ/www/center/css
generate css/bg.gif
generate css/form.css
generate css/main.css
mkdir E:/AppServ/www/center/images
generate images/.yii
generate index.php
mkdir E:/AppServ/www/center/protected
generate protected/.htaccess
mkdir E:/AppServ/www/center/protected/commands
mkdir E:/AppServ/www/center/protected/commands/shell
generate protected/commands/shell/.yii
mkdir E:/AppServ/www/center/protected/components
generate protected/components/MainMenu.php
generate protected/components/UserIdentity.php
mkdir E:/AppServ/www/center/protected/components/views
generate protected/components/views/mainMenu.php
mkdir E:/AppServ/www/center/protected/config
generate protected/config/console.php
generate protected/config/main.php
mkdir E:/AppServ/www/center/protected/controllers
generate protected/controllers/SiteController.php
mkdir E:/AppServ/www/center/protected/extensions
generate protected/extensions/.yii
mkdir E:/AppServ/www/center/protected/messages
generate protected/messages/.yii
mkdir E:/AppServ/www/center/protected/models
generate protected/models/ContactForm.php
generate protected/models/LoginForm.php
mkdir E:/AppServ/www/center/protected/runtime
generate protected/runtime/.yii
mkdir E:/AppServ/www/center/protected/views
mkdir E:/AppServ/www/center/protected/views/layouts
generate protected/views/layouts/main.php
mkdir E:/AppServ/www/center/protected/views/site
generate protected/views/site/contact.php
generate protected/views/site/index.php
generate protected/views/site/login.php
mkdir E:/AppServ/www/center/protected/views/system
generate protected/views/system/.yii
generate protected/yiic
generate protected/yiic.bat
generate protected/yiic.php
mkdir E:/AppServ/www/center/themes
mkdir E:/AppServ/www/center/themes/classic
mkdir E:/AppServ/www/center/themes/classic/views
generate themes/classic/views/.htaccess
mkdir E:/AppServ/www/center/themes/classic/views/layouts
generate themes/classic/views/layouts/.yii
mkdir E:/AppServ/www/center/themes/classic/views/site
generate themes/classic/views/site/.yii
mkdir E:/AppServ/www/center/themes/classic/views/system
generate themes/classic/views/system/.yii
Your application has been created successfully under E:\AppServ\www\center.
E:\AppServ\www>
3）预览
php.ini下载
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