convert.php

<?php

function convertDir($directory, $target, $from, $to) {
  $dir = opendir($directory);
  while(false !== ($file = readdir($dir))) {
    if(is_dir($file)) {
      convertDir($directory . "/" + $file, $target . "/" . $file, $from, $to);
    } else {
      file_put_contents($target . "/" . $file, iconv($from, $to, file_get_contents($file)));
      echo "Converted $file\n";
    }
  }
}


$dir = "/home/user/myphp";
$outpath = "/home/user/converted-php";

$fromCharset = "Windows-1250";
$toCharset = "UTF-8";

convertDir($dir, $outpath, $fromCharset, $toCharset);

echo "\n\n-------------------\nAll done!\n";