php 文件上传类(4)

         }
     }
     private  function checkFileSize(){
         if($this->fileSize>$this->maxSize){
             $this->setOption('errorNum',-3);
         }else {
             return $this->errorNum;
         }
     }
     private  function checkFilePath(){
         if(!file_exists($this->filePath)){
             if($this->isCoverModer){
                 $this->makePath();
             }else {
                 $this->setOption('errorNum',-6);
             }
         }
     }
     private function proRandName(){
         $tmpStr= "abcdefghijklmnopqrstuvwxyz0123456789";
         $str="";
         for ($i=0;$i<8;$i++){
             $num=rand(0,strlen($tmpStr));
             $str.=$tmpStr[$num];
         }
         return $str;
     }
     private function makePath(){
         if(!@mkdir($this->filePath,0755)){
             $this->setOption('errorNum',-7);
         }
     }
     private function copyFile(){
         $filePath=$this->filePath;
         if($filePath[strlen($filePath)-1]!='/'){
             $filePath.='/';
         }
         $filePath.=$this->newFileName;
         if(!@move_uploaded_file($this->tmpFileName,$filePath)){