namespace frontend/controllers;use yii;use yii/web/Controller;class IndexController extends Controller{  public function behaviors()//先于action執行,可以用來實現頁面緩存  {    return [     [       'class'=>'yii/filters/PageCache',//整個頁面緩存       'duration'=>10,//緩存時間       'only'=>['cache'],//只有index操作會被緩存，即使沒有視圖展示也會緩存       'dependency'=>[         'class'=>'yii/caching/DbDependency',         'sql'=>'select count(*) from user',       ],     ]    ];  }  public function actionCache(){    //片段緩存    return $this->renderPartial("index");  }}

<?php/** * Created by PhpStorm. * Date: 2016/5/25 * Time: 19:37 */$duration = 15;//緩存依賴  $dependency = [    'class'=>'yii/caching/FileDependency',    'fileName'=>'hw.txt',//web目錄下  ];//緩存的開關$enabled = false;?><?php  //if($this->beginCache('cache_div',['duration' => $duration])){  //if($this->beginCache('cache_div',['enabled' => $enabled])){  if($this->beginCache('cache_div',['dependency' => $dependency])){?>    <div id="cache_div">      <div>這里待會會被緩存 哈哈</div>    </div><?php  $this->endCache();}?><div id="no_cache_div">  <div>這里不會被緩存 嚕</div></div>