yii实现图片上传及缩略图生成的方法

• 缩略图片生成
• @ path 图片路径
• @ width 图片宽度
• @ height 图片高度
  */
  public function actionGetThumb($path,$w,$h) {
  $file_name = md5($path . $w . $h);
  if (file_exists('./temp/' . $file_name . '.jpg')) {
  header('location:/temp/' . $file_name . '.jpg');
  Yii::app()->end();
  }
  Yii::import("ext.EPhpThumb.EPhpThumb");
  $thumb = new EPhpThumb();
  $thumb->init();
  $thumb->create('.' . $path)
  ->adaptiveResize($w,$h)
  ->save('./temp/' . $file_name . '.jpg')
  ->show();
  }

/*

• 图片显示
  */

public function actionList() {
$attache = Attache::model();
$list = $attache->findAll();
$this->render('list',array('list' => $list));
die;
}

/**

• 文件上传
  /
  public function actionIndex() {
  $path = getcwd() . 'uploads';
  $dir = DIRECTORY_SEPARATOR . date('Y') . DIRECTORY_SEPARATOR . date('m');
  $dir = str_replace("","/",$dir);
  $uploads_dir = str_replace("",$path . $dir);
  if (!is_dir($uploads_dir) || !is_writeable($uploads_dir)) {
  mkdir($uploads_dir,0777,TRUE);
  touch($uploads_dir . '/index.html');
  }
  $uploaded = false;
  $model = new Upload();
  if (isset($_POST['Upload'])) {
  $model->attributes = $_POST['Upload'];
  $file = CUploadedFile::getInstance($model,'file');
  $newName = substr(md5($file->extensionName . round((microtime(true) 1000))),17) . '.' . $file->extensionName;
  $file_name = $uploads_dir . '/' . $newName;
  if ($model->validate()) {
  $attache = new Attache();
  $uploaded = $file->saveAs($file_name,TRUE);
  $attache->name = $file->getName();
  $attache->path = $dir . '/' . $newName;
  $attache->create_time = time();
  $attache->save();
  }
  }

$this->render('index',array(
'model' => $model,
'uploaded' => $uploaded,
'dir' => $uploads_dir,
));
}
}

public function rules() {
return array(
array('file','file','types' => 'jpg,gif,png,zip'),
);
}
}

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