本文实例讲述了Yii+upload实现AJAX上传图片的方法。分享给大家供大家参考，具体如下：

控制器代码：

/** * get ajax uploaded files. */ public function actionGetAjax(){ $model=new Attachment();//加载附件模型 $tmpFile = CUploadedFile::getInstanceByName('image');//读取图像上传域,并使用系统上传组件上传 $Directroy = Yii::app()->params['uploadPath'];//读取上传配置文件,我的配置是/uploads //创建文件存放路径 $y = date('Y'); $m = date('m'); $d = date('d'); $Directroy = $Directroy."/"; $pathd = $Directroy.$y."/".$m."/".$d."/"; Tool::makedir(dirname(Yii::app()->BasePath).$pathd); //创建文件夹,此处一定要加上dirname(Yii::app()->BasePath)不然可能会出错; if(is_object($tmpFile) && get_class($tmpFile)==='CUploadedFile'){ $filename = time().rand(0,9); $ext = $tmpFile->extensionName;//上传文件的扩展名 if($ext=='jpg'||$ext=='gif'||$ext=='png'){ $big = $pathd . $filename . '_600.' . $ext; //310缩略图 $small = $pathd . $filename . '_310.' . $ext; //310缩略图 $thumb = $pathd . $filename . '_100.' . $ext; //100缩略图 $model->zat_thumb = $thumb; //缩略图 } $uploadfile = $pathd . $filename . '.' . $ext; //保存的路径 $model->zat_url = $pathd . $filename . '.' . $ext; //重新赋值 $model->zat_file_name = $filename . '.' . $ext; //文件名称 $model->zat_title = $tmpFile->name; //文件标题 $model->zat_file_type = $tmpFile->type; //文件类型 $model->zat_file_size = $tmpFile->size; //文件大小 $model->zat_image = 2; $model->zat_ip = Yii::app()->request->userHostAddress; //上传IP //print_r($uploadfile); } if($model->save()){ $tmpFile->saveAs(dirname(Yii::app()->BasePath).$uploadfile);//保存到服务器 if($ext=='jpg'||$ext=='gif'||$ext=='png'){ $img = Yii::app()->image->load(dirname(Yii::app()->BasePath).$uploadfile); //使用image-Kohana图像处理库扩展 $img->resize(600,600)->quality(85); $img->save(dirname(Yii::app()->BasePath).$big);//生成600缩略图 $img->resize(310,310)->quality(85); $img->save(dirname(Yii::app()->BasePath).$small);//生成310缩略图 $img->resize(100,100)->quality(85); $img->save(dirname(Yii::app()->BasePath).$thumb);//生成100缩略图 } if($ext=='jpg'||$ext=='gif'||$ext=='png'){ $str = json_encode( array( 'upfile'=>array( 'zat_id' => Yii::app()->db->getLastInsertID(), //取插ID 'file' => $uploadfile,//原图 'small' => $small,//310缩略图 'thumb' => $thumb,//100缩略图 ) ) ); }else{ $str = json_encode( array( 'upfile'=>array( 'zat_id' => Yii::app()->db->getLastInsertID(), 'file' => $uploadfile, ) ) ); } echo $str; } }

VIEW代码：

<input id="fileupload" type="file" name="image" multiple> <script src="<?php echo Yii::app()->baseUrl;?>/js/jquery.ui.widget.js"></script> <script src="<?php echo Yii::app()->baseUrl;?>/js/jquery.iframe-transport.js"></script> <script src="<?php echo Yii::app()->baseUrl;?>/js/jquery.fileupload.js"></script> <script> $(function () { $('#fileupload').fileupload({ dataType: 'json', url: '/Attachment/GetAjax', success: function (json) { $('#MemType_zmt_pic').attr('value',json.upfile.file); $("#images").attr('src',json.upfile.file); } }); }); </script>

希望本文所述对大家基于Yii框架的PHP程序设计有所帮助。