递归打印级联目录

<?php
/**递归打印级联目录**/
function read_dir($path){
static $dir_i = 0;
$pre = ‘‘;
 
$dh = opendir($path);
for($a=0; $a<$dir_i; $a++)
$pre .= "&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp";  //输出6个空格
$pre .= "|______";
while(($row = readdir($dh)) != false){
 
echo $pre.$row,‘<br/>‘;
 
//如果 $row 还是目录,除去‘.‘,‘..‘目录
if($row != ‘.‘ && $row != ‘..‘ && is_dir($path.‘/‘.$row)){
$dir_i++;
    read_dir($path.‘/‘.$row); 
    $dir_i--;
}
}
closedir($dh);
unset($dir_i);
unset($pre);
}
read_dir(‘..‘);
 
?>