php 文件上传类

<?php
/**
* 文件上传类
* 2011/9/22
* kcj
* */
class UpFile{
     private $filePath;                             //文件目的路径
     private $fileField;                            //默认$_FILES[$fileField],通过$_FILES环境变量获取上传文件信息
     private $originName;                           //源文件名
     private $tmpFileName;                          //临时文件名
     private $fileType;                             //文件类型
     private $fileSize;                             //文件大小
     private $newFileName;                          //新文件名
     private $allowType=array('jpg','gif','png');   //
     private $maxSize=2000000;                      //允许文件上传的最大度是2M
     private $isUserDefName=false;                  //是否采用用户自定义名
     private $userDefName;                          //用户定义名称
     private $isRandName=true;                      //是否随机命名
     private $randName;                             //系统随机名称
     private $errorNum=0;                           //错误号
     private $isCoverModer=true;                    //是否覆盖模式

     function __construct($options=array()){
         $this->setOptions($options);       //设置上传时属性列表
     }

     function uploadFile($filefield){
         $this->setOption('errorNum',0);                //设置错误位
         $this->setOption('fileField',$filefield);      //设置fileField
         $this->setFiles();                             //设置文件信息
         $this->checkValid();                           //判断合法性
         $this->checkFilePath();                        //检查文件路径
         $this->setNewFileName();                       //设置新的文件名
         if($this->errorNum<0)
         return $this->errorNum;
      return $this->copyFile(); //上传文件
     }
     private function setOptions($options=array()){
         foreach ($options as $key=>$val){
             if(!in_array($key,array('filePath','fileField','originName','allowType','maxSize','isUserDefName','userDefName','isRandName','randName')))
             continue;
             $this->setOption($key,$val);
         }
     }
     private function setFiles(){
         if($this->getFileErrorFromFILES!=0){
             $this->setOptions('errorNum',-1);
             return $this->errorNum;
         }
         $this->setOption('originName',$this->getFileNameFromFILES());
         $this->setOption('tmpFileName',$this->getTmpFileNameFromFILES());
         $this->setOption('fileType',$this->getFileTypeFromFILES());
         $this->setOption('fileSize',$this->getFileSizeFromFILES());

     }
     private function setOption($key,$val){
         $this->$key=$val;
     }
     private function setNewFileName(){
         if($this->isRandName==false&&$this->isUserDefName==false){
             $this->setOption('newFileName',$this->originName);
         }elseif ($this->isRandName==true&&$this->i

补充：Web开发 , php ,