<?php
$path = "/home/nbcftp/P*.jpg";

$latest_ctime = 0;
$latest_filename = '';

$files = glob($path);
foreach($files as $file)
{
        if (is_file($file) && filectime($file) > $latest_ctime)
        {
                $latest_ctime = filectime($file);
                $latest_filename = $file;
        }
}

$file = $latest_filename;
$type = 'image/jpeg';

header('Content-Type: ' . $type);
header('Content-Length: ' . filesize($file));
readfile($file);
?>