删除本地上传图片路径

@@ -53,12 +53,32 @@ class Qiniu
         $previewUrl = $fileType == 'image' ? $this->getPreviewUrl($file, $watermark) : $this->getFileDownloadUrl($file);
         $url        = $fileType == 'image' ? $this->getImageUrl($file, $watermark) : $this->getFileDownloadUrl($file);
 
+        $sys = $this->getOperateSys();
+        
+        if($sys == 'Linux'){
+            $file = ROOT_PATH.'public/upload/'.$file;
+            unlink($file);//适用于linux
+        }
         return [
             'preview_url' => $previewUrl,
             'url'         => $url,
         ];
     }
 
+    //判断当前操作系统
+    public function getOperateSys(){
+        $os_name = php_uname('s');
+        //判断
+        if(strpos($os_name,"Linux")!==false){
+            $os_str="Linux";
+        }else if(strpos($os_name,"Windows")!==false){
+            $os_str="Windows";
+        }else{
+            $os_str='';
+        }
+        return $os_str;
+    }
+
     /**
      * 获取图片预览地址
      * @param string $file