如何在PHP中使用Yii函数

//引入Yii的自动加载器
require_once 'path/to/yii-folder/yii.php';

//创建应用
Yii::createWebApplication($config)->run();

$connection = Yii::app()->db;

// 查询
$command = $connection->createCommand('SELECT * FROM user WHERE id=:id');
$command->bindParam(':id', $id, PDO::PARAM_INT);
$result = $command->queryAll();

// 插入
$command = $connection->createCommand('INSERT INTO user (name, age) VALUES (:name, :age)');
$command->bindParam(':name', $name);
$command->bindParam(':age', $age, PDO::PARAM_INT);
$command->execute();

//创建模型实例
$model = new User;

//查询数据
$model = User::model()->findByPk($id);

//保存数据
$model->name = 'John';
$model->age = 30;
$model->save();

//删除数据
$model->delete();

//设置缓存
Yii::app()->cache->set('name', 'John');

//获取缓存
$name = Yii::app()->cache->get('name');

//删除缓存
Yii::app()->cache->delete('name');

//生成URL
$url = Yii::app()->createUrl('user/view', array('id'=>1));

//重定向到另一个URL
$this->redirect($url);

//验证用户输入
Yii::app()->request->validate();