为什么下面用$str=opendir("/filename/")打开不文件目录 $str=opendir("/filename/");//而要改成$str=opendir("./filename/")才能打开 if (is_dir($str)){ if ($dh = opendir($str){ while (($file = readdir($dh)) !== false){ echo "filename:" . $file . "
"; } closedir($dh); } }