上传

<meta charset="utf-8"/>
<?php
class upload{
   var $filename;
   var $filetype;
   var $filesize;
   var $fileerror;
   public $filenewname;
   var $allowsize;
   var $allowtype;
   var $path;
   var $filetmpname;
   var $seterror;
   function __construct($files,$path)
   {
      $this->filename=$files['name'];
   $types=explode(".",$this->filename);
   $this->filetype=$types[count($types)-1];
   $this->filesize=$files['size'];
   $this->fileerror=$files['error'];
   $this->allowtype=array("jpg","jpeg","gif","png","bmp");
   $this->allowsize=20000000;
   $this->filenewname=time().".".$this->filetype;
   $this->filetmpname=$files['tmp_name'];
   $this->path=$path;
   $this->seterror=1;
   if($this->fileerror!=0)
   {
      switch($this->fileerror)
   {
   case 1:;
   case 2: $this->seterror= "上传的文件过大，最大为2M";exit;break;
   case 3:  $this->seterror= "部分文件被上传";exit;break;
   case 4:  $this->seterror= "文件没有被上传";exit;break;
   case 6:  $this->seterror="找不到临时文件夹";exit;break;
   case 7:  $this->seterror="文件写入失败";exit;break;
      }
   }
   else
   {
       if(!is_uploaded_file($this->filetmpname))
    {
       $this->seterror="非法操作";exit;
    }
    else
    {
    
       if(!in_array($this->filetype,$this->allowtype))
       {
         $this->seterror="文件类型不符";exit;
       }
    else
    {
   
    if($this->filesize>$this->allowsize)
    {
        $this->seterror="超出最大限制";
     exit;
    }
    else
    {
     if(!file_exists($this->path))
     {
      mkdir($this->path,0777);
     }
     else
     {
      if($this->seterror!=1)
      {
       echo $this->seterror;
       //echo "1";
       exit;
      }
      else
      {  
          //echo "2";
       //exit;
       move_uploaded_file($this->filetmpname,$this->path.$this->filenewname);
      }
     }
    }
    }
    }  
  }
  
   }
   function getpathname()
   {
     return $this->path.$this->filenewname;
   }
}
?>