php--如何删除目录

<span>shan chu mu lu he wen jian</span>
<hr>
<?php
function full_rmdir($dir_name)
{
    //打开目录成功
    if ($handle = @opendir($dir_name))
    {
        //获得当前工作目录，保存
        $old_doc = getcwd();
        //将传入目录，设置为当前目录
        chdir($dir_name);
        //循环打开下级目录
        while($file = readdir($handle))
        {
            if($file == '.' || $file == '..')
            {
                //如果目录是上级目录，跳过
                continue;
            }
            //如果是目录
            if(is_dir($file))
            {
                //递归调用，删除目录
                if(full_rmdir($file))
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            //如果是文件
            else
            {
                //删除文件
                if(unlink($file))
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
        }
        //关闭句柄
        closedir($handle);
        //恢复当前目录
        chdir($old_doc);
        //删除目录
        if(rmdir($dir_name))
        {
            return true;
        }
        else
        {
            return false;
        }
    }
    //打开目录失败
    else
    {
        return false;
    }
}
//
$dir_del = "ceshi";
echo "zheng zai shan chu ($dir_del) mu lu..<br><br>";
if(full_rmdir($dir_del))
{
    echo "shan chu ($dir_del) cheng gong.<br>";
}
else
{
    echo "shan chu ($dir_del) shi bai.<br>";
}
?>