[PHP] Get file by latest version from current directory (electron-builder / nsis-web)

latest.php

<?
// Author: Tema Smirnov [https://github.com/TemaSM] © 2017
$iVersion= 0;
$filename = "<filename>.ext";
$regexp = "/([-A-z]+)-([\.0-9]+)-([a-z]+)-([a-z0-9]+).+nsis.7z/";
/* Example: MyProject-0.0.1-alpha-x64.nsis.7z
0	=>	MyProject-0.0.1-alpha-x64.nsis.7z
1	=>	MyProject
2	=>	0.0.1
3	=>	alpha
4	=>	x64
*/
foreach (new DirectoryIterator(__DIR__) as $file) {
  if ($file->isFile()) {
  	preg_match($regexp, $file->getFilename(), $matches);
  	$ver = str_replace('.', '', $matches[2]);
  	if ($ver > $iVersion) {
  		$iVersion= $ver;
  		$filename =  $matches[0];
  	} // print $file->getFilename() . "\n";
  }
}
$URL = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
$fileURL = $URL . $filename;
// echo $fileURL;
header('Location: '.$fileURL);
exit;