Remove those Word copy and paste smart quotes

gistfile1.txt

function _lym_sanitize_text($text) {
  $text = mb_convert_encoding($text, 'HTML-ENTITIES', 'UTF-8');

  $find[] = '“';  // left side double smart quote
  $find[] = '”';  // right side double smart quote
  $find[] = '‘';  // left side single smart quote
  $find[] = '’';  // right side single smart quote
  $find[] = '…';  // elipsis
  $find[] = '—';  // em dash
  $find[] = '–';  // en dash

  $replace[] = '"';
  $replace[] = '"';
  $replace[] = "'";
  $replace[] = "'";
  $replace[] = "...";
  $replace[] = "-";
  $replace[] = "-";

  return str_replace($find, $replace, $text);
}