php+Uploadify在win7下安装配置好了，也可以正常运行，但在linux下无法上传,该怎么解决

php+Uploadify在win7下安装配置好了，也可以正常运行，但在linux下无法上传
PHP这里我用的是YII框架，应该没什么影响

/*
	 Uploadify 后台处理方法
	 */
	public function actionuploadify(){
			
		//设置上传目录
		$path = "./uplode/video/";
              //这里$_FILES为空
		if (!empty($_FILES)) {
				
			//得到上传的临时文件流
			$tempFile = $_FILES['Filedata']['tmp_name'];
				
			//允许的文件后缀
			$fileTypes = array('avi','rmvb','mpg','wav');
				
			//得到文件原名
			$fileName = iconv("UTF-8","GB2312",$_FILES["Filedata"]["name"]);
			$fileParts = pathinfo($_FILES['Filedata']['name']);
				
			//接受动态传值
			$files=$_POST['typeCode'];
				
			//最后保存服务器地址
			if(!is_dir($path))
			mkdir($path);
				
			
			//判断singerInfo文件是否存在且不为空 
			$this->getSingFile();
				

			if (move_uploaded_file($tempFile, $path.$fileName)){
				$myfile = explode(".",$fileName);
				
				$sql = $this->getfile($myfile[0],1);

				if ($sql){
					
					//songandSinger文档插入
					$songSingerFile = "./uplode/image/songSinger.txt";
					$this->getSongFile($myfile[0],$songSingerFile,"dSongAndSinger","kSingerID");
					
					//songandType文档插入
					$songTypeFile = "./uplode/image/songType.txt";
					$this->getSongFile($myfile[0],$songTypeFile,"dSongAndType","kSongTypeID");
					
					//songandStyle文档插入
					$songStyleFile = "./uplode/image/songStyle.txt";
					$this->getSongFile($myfile[0],$songStyleFile,"dSongAndStyle","kSongStyleID");

					echo $fileName."文件上传成功，数据上传成功！";
						
				}else{
					echo $fileName."文件上传成功，数据上传失败！";
				}
				//

			}else{
				echo $fileName."上传失败！";
			}
				
		}

	}

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