问显示添加到网站目录的最新文件，同时排除PHP中的某些特定文件

EN

<?php
$path = "states"; 
$latest_ctime = 0;
$latest_filename = '';    
$d = dir($path);
while (false !== ($entry = $d->read())) {
   $filepath = "{$path}/{$entry}";
   if(is_file($filepath) && filectime($filepath) > $latest_ctime) {
      $latest_ctime = filectime($filepath);
      $latest_filename = $entry;
      echo $latest_filename;
?>

<?php
$path = "states/$ls"; 
$latest_ctime = 0;
$latest_filename = '';
$d = dir($path);
while ($entry = $d->read()) {
if ($entry == "mobile.htm") {continue;}
if ($entry == "bg.jpg") {continue;}
if ($entry == "flag.png") {continue;}
$filepath = "$path/$entry";
$ctime = filectime($filepath);
if (is_file($filepath) && $ctime > $latest_ctime) {
    $latest_ctime = $ctime;
    $latest_filename = $filepath;
}
}
echo $latest_filename;
?>