这篇文章主要介绍了yii实现图片上传及缩略图生成的方法,详细分析了图片的上传及缩略图的生成原理与实现方法,是非常实用的技巧,需要的朋友可以参考下

本文实例讲述了利用yii框架来实现图片上传功能并在上传成功之后自动生成缩略图的方法，分享给大家供大家参考。具体实现方法如下：

Action文件:

复制代码 代码如下:

/**

* TestController.php

* Created on: 2014-1-26 12:59:36 by Outsider

*/

class TestController extends CController {

/**

* 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))), 0, 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,

));

}

}

Upload.php:

复制代码 代码如下:

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