PHP类实现文件上传代码分享

<?
class upload{

private $name;                 //$_FILES['file'][name]
private $type;                 //$_FILES['file'][type]
private $tmp_name;             //$_FILES['file'][tmp_name]
private $error;                //$_FILES['file'][error]
private $size;                 //$_FILES['file'][size]
private $newf;                 //文件上传路径 默认为  upload/

public function __construct($name,$type,$tmp_name,$error,$size,$newf="upload/"){
$this->name=$name;
$this->type=$type;
$this->tmp_name=$tmp_name;
$this->error=$error;
$this->size=$size;
$this->newf=$newf;
}
private function size(){      //上传大小
if($this->size>(1024*1024)){ //默认为 1MB
echo "<script>alert('您上传文件太大了,不能上传！');history.back();</script>";

exit();
}
}
private function type(){ //支持上传类型
switch    ($this->type)
{
case    "image/pjpeg":
break;