这个例子非常的有代表性……可以扩展解决很多的实际问题……………………
<?php
if(!isset($_GET[mulu])||empty($_GET[mulu]))$dqml=getcwd();//获得脚本目录
else $dqml=$_GET[mulu];
chdir($dqml);//改变当前目录
echo "当前目录:".getcwd()."<br>";
$ml = opendir($dqml); //打开目录
while ($hqml = readdir($ml)){ //循环读取目录中的目录及文件
echo "<tr><td align='center' valign='middle'bgcolor='#A5F5BF'>";
if(is_dir($hqml)){ //判断是目录
if($hqml=="."){
$mulu=getcwd();//显示当前目录
echo "<a href=$php_self?mulu=$mulu><span class='style1'>锁定</span></a>"; }
elseif($hqml==".."){
$mulu=getcwd()."\\.."; //上级目录
echo "<a href=$php_self?mulu=$mulu><span class='style1'>上级目录</span></a>";
}else{
$mulu=getcwd()."\\$hqml"; //子目录
echo "<a href=$php_self?mulu=$mulu>$hqml</a>"; }
}else{
$ext=substr($hqml,strrpos($hqml,"."));
if(strtoupper($ext)==".PHP"||strtoupper($ext)==".TXT"){
$mulu=getcwd();
echo "<a href=./example25.php?mulu=$mulu&filename=$hqml&type=$ext>$hqml</a>";
}else{
echo "$hqml"; } }
if(is_dir($hqml)) $file_size="目录";
else $file_size=round(filesize($hqml)/1024)."k";
echo "<td align='center' valign='middle' bgcolor='#A5F5BF'>$file_size</td>";
$create_time=date("y-m-d h:i:sA",filectime($hqml));
echo "<td align='center' valign='middle' bgcolor='#A5F5BF'>$create_time</td>";
$update_time=date("y-m-d h:i:sA",filemtime($hqml));
echo "<td align='center' valign='middle' bgcolor='#A5F5BF'>$update_time</td>"; }
closedir($ml); ?>
