一个目录类

<?
//目录操作基类
class FileDirectory {
  var $servermode;
  var $serverpath;    //web服务器目录
  var $pagepath;    //当前页目录
  var $path;        //当前目录
  var $ffblk;        //用于存储有关文件的信息
  function FileDirectory() {
    set_time_limit(0);    //设置网页运行时间，0不限
    $this->serverpath = $GLOBALS[DOCUMENT_ROOT]."/";
    $this->path = $this->pagepath = dirname(eregi_replace("//","/",$GLOBALS[SCRIPT_FILENAME]))."/";
    if(eregi("Win32",getenv("SERVER_SOFTWARE")))
      $this->servermode = "WIN32";
  }
  function first_dir() {
    return dirname(eregi_replace("//","/",$GLOBALS[SCRIPT_FILENAME]));
  }
  //获取文件信息
  function file_info($filename) {
    $ar[name] = $filename;
    $ar[type] = filetype($filename);
    $ar[read] = is_readable($filename);
    $ar[write] = is_writeable($filename);
    $ar[exec] = is_executable($filename);
    $ar[time] = date("Y-m-d H:i:s",filemtime($filename));
    $ar[size] = filesize($filename);
    $ar[style] = ($ar[type]=="dir"?"d":"-")
              .($ar[read]?"r":"-")
              .($ar[write]?"w":"-")
              .($ar[exec]?"x":"-");
&nbs

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