php上传文件类

    <?php        header("Content-Type:text/html; charset=utf-8;");        echo "uploadclass<br/>";        echo "<br/>".$_FILES['file']["name"]."<br/>";                $nabc = new uploadclass($_FILES['file']);         echo "<br/>".$nabc->getname()."<br/>";//获取新的名字                        class uploadclass {            var $location ;//设置存放文件的目录            var $max_size;//上传文件的大小            var $event; //初始值是success            var $filename;//获取保存在文件夹里的文件的文件名字            function uploadclass($file) {                $location = "./temp/";//设置存放文件的目录                $max_size = 1000000;//上传文件的大小                $event="success"; //初始值是success                //判断目录是否存在                if(! is_dir($location))                 {                       mkdir($location);                      @chmod($location,777);                 }                                 $oldFilename = $file["name"];                $filename = explode(".",$oldFilename);                $filenameext = $filename[count($filename) - 1];                $newFilename = "_".time()."_".rand(10000, 20000).".".$filenameext;                $this->filename = $newFilename;                                echo "<br/>".$this->$filename."<br/>";                if(!$file['name']=="")                {                     if($file['size']<$max_size)                    {                         echo "文件上传路径：".$location.$file['name'];                         move_uploaded_file($file['tmp_name'], $location.$newFilename) or $event = "Failure";                     }                     else                    {                         $event="File too large";                     }                 }             }                        public function getname()              {                return  $this->filename;              }        }        ?>