/**  * 递归删除目录中文件  * @param $pathname  * @return bool  */ public static function delDir($pathname)//要删除的目录 {
      if(file_exists($pathname)) {
          if(is_file($pathname)) {
              unlink($pathname);         } else {
              $dir = opendir($pathname);             while($filename = readdir($dir)) {
                  if($filename != "." && $filename != "..") {
                      $filename = $pathname . "/" . $filename;                     if(is_dir($filename)) {
                          self::delDir($filename);                     } else {
                          unlink($filename);                     }                 }             }             closedir($dir);             rmdir($pathname);         }     }     return true; }