自已写的 显示站点目录及文件

<?php
error_reporting(0);
header("content-type:text/html; charset=UTF-8");
#######################################################
# 函数 view_folder() ，将指定文件夹内的所有文件赋予数组并返回
# 参数说明：
# $folder_arr 返回值变量，子目录数组
# $file_arr 返回值变量，当前目录的文件数组
# $path 指定要遍历的目录路径
# $start_str 只查询文件名以该字符串开始的文件
# $not_str 指定要排除的文件，多个以 || 分隔开
#######################################################
function view_folder(&$folder_arr, &$file_arr, $path = ".", $start_str = "", $not_str = ""){
      if ( trim($path) == "" ) return $file_arr;
      $start_str_len = strlen( trim($start_str) );
      $not_str = ".||..||".$not_str;
      $not_str_arr = explode( "||", trim($not_str) );
      $handle=opendir($path);
      while ($file = readdir($handle)) {
            $path = realpath(str_replace('\\','/',$path));
            if( !is_dir( $path."/".$file)) {
                  if ( $start_str_len > 0 ){
                        if ( strtolower(substr($file,0,$start_str_len)) == strtolower(trim($start_str)) ){
                              $no_str_yes = "no";
                              if ( count($not_str_arr) > 0 ){
                                    foreach($not_str_arr as $key => $value) {
                                          if ( strtolower(trim($not_str_arr[$key])) == strtolower($file) ){
                                                $no_str_yes = "yes";
                                                break;
                                          }
                                    }
                              }
                              if ( $no_str_yes == "no" ){
                                    $file_arr[] = "$file";
                              }
                        }
                  }else{
                        $no_str_yes = "no";
                        foreach($not_str_arr as $key => $value) {
                              if ( trim($not_str_arr[$key]) == $file ){
                                    $no_str_yes = "yes";
                                    break;
                              }
                        }
                        if ( $no_str_yes == "no" ){
                              $file_arr[] = "$file";
                        }            
                  }
            }else{
                  if ( $file <> "." ) $folder_arr[] = $file;
            }
      }
      closedir($handle);
      if ( count($folder_arr) > 0 ) sort($folder_arr); //排序数组
      if ( count($file_arr) > 0 ) sort($file_arr); //排序数组
}
#######################################################
# 调用函数示例
#######################################################
//设置参数，并调用函数
$path = trim($_GET['path']); //获取当前目录路径
      if( $path == "" ) $path      = dirname(__FILE__);
      $path = str_replace('\\','/',$path);
$start_str = ""; //只显示首字母等于此字符串的文件（此参数功能是用于特殊用途的，不需要请留空）
$not_str = ""; //要排除显示的文件名，多个以 || 分隔开（此参数功能是用于特殊用途的，不需要请留空）
view_folder($folder_arr, $file_arr, $path, $start_str, $not_str); //调用函数返回数组
$path_url = realpath($path); //将路径转换成实际有效的路径
echo "<b>当前目录：".$path_url."</b><br>";
//输出目录
if ( count($folder_arr) > 0 ){
      foreach($folder_arr as $key => $value){
            if ( trim($folder_arr[$key]) == ".." ){
                  echo "<div>[<a href='?path=".urlencode($path_url)."/".$folder_arr[$key]."'><font color=#000>".$folder_arr[$key]."</font></a>]</div>";
            }else{
                  echo "<div>[<a href='?path=".urlencode($path_url)."/".urlencode($folder_arr[$key])."'><font color=#000>".$folder_arr[$key]."</font></a>]</div>";
            }
      }
}
//输出当前目录的文件
if ( count($file_arr) > 0 ){
      $root_path = substr($_SERVER['DOCUMENT_ROOT'],0,strlen($_SERVER['DOCUMENT_ROOT'])-1); //根目录
      $root_path_len = strlen($root_path);
      $this_path = str_replace('\\','/',$path_url); //当前目录
      $this_path_len = strlen($this_path);
      
      if ( $root_path_len <= $this_path_len and substr($root_path,0,$root_path_len)==substr($this_path,0,$root_path_len) ){ //当在根目录范围内时，文件则以链接方式显示
            $this_url = str_replace($root_path,"",$this_path); //去掉根目录绝对路径，使其以/开始
            if ( $this_url == "" ){ //如果完全相等，则默认从根目录/开始
                  $this_url = "/";
            }else{ //否则在目录后面加上“/”结尾，以连接文件名组成URL
                  $this_url .= "/";
            }
            //循环输出文件
            foreach($file_arr as $key => $value){
                  echo "<div><a href='".$this_url.$file_arr[$key]."'target='_blank'>".$file_arr[$key]."</a></div>";
            }
      }else{ //当已超出根目录时，只显示文件，取消超链接
            foreach($file_arr as $key => $value){
                  echo "<div>".$file_arr[$key]."</div>";
            }
      }
}
?>