递归遍历某个文件夹（包括子文件）中的左右内容

<?php  
  
//直接遍历所有文件.递归  
function trees($dirname){  
    $dirOb = dir($dirname);  
     echo "<ul>
";  
    while($file = $dirOb->read()){  
        if($file == "." || $file == ".."){  
              
        }else{  
            if(is_dir("$dirname/$file")){  
            echo "<li><font color="#ff00cc"><b>$file</b></font></li>
";  
                trees("$dirname/$file");  
            }else{  
                 echo "<li>$file</li>
";  
            }  
        }  
        echo "<br/>";  
    }  
    echo "</ul>
";  
}  
trees("../tp5");