Set encoding to UTF-8 if not UTF-8

<?php
// Fixes the encoding to uf8
function fixEncoding($in_str)
{
  $cur_encoding = mb_detect_encoding($in_str) ;
  if($cur_encoding == "UTF-8" && mb_check_encoding($in_str,"UTF-8"))
    return $in_str;
  else
    return utf8_encode($in_str);
} // fixEncoding 
?>