PHP function to convert unicode to special characters?

Question

Is there a php function to handle the encodings below?

  .replaceAll("\u00c3\u0080", "À")
  .replaceAll("\u00c3\u0081", "Á")
  .replaceAll("\u00c3\u0082", "Â")
  .replaceAll("\u00c3\u0083", "Ã")
  .replaceAll("\u00c3\u0084", "Ä")
  .replaceAll("\u00c3\u0085", "Å")
  .replaceAll("\u00c3\u0086", "Æ")
  .replaceAll("\u00c3\u00a0", "à")
  .replaceAll("\u00c3\u00a1", "á")
  .replaceAll("\u00c3\u00a2", "â")
  .replaceAll("\u00c3\u00a3", "ã")
  .replaceAll("\u00c3\u00a4", "ä")
  .replaceAll("\u00c3\u00a5", "å")
  .replaceAll("\u00c3\u00a6", "æ")
  .replaceAll("\u00c3\u0087", "Ç")
  .replaceAll("\u00c3\u00a7", "ç")
  .replaceAll("\u00c3\u0090", "Ð")
  .replaceAll("\u00c3\u00b0", "ð")
  .replaceAll("\u00c3\u0088", "È")
  .replaceAll("\u00c3\u0089", "É")
  .replaceAll("\u00c3\u008a", "Ê")
  .replaceAll("\u00c3\u008b", "Ë")
  .replaceAll("\u00c3\u00a8", "è")
  .replaceAll("\u00c3\u00a9", "é")
  .replaceAll("\u00c3\u00aa", "ê")
  .replaceAll("\u00c3\u00ab", "ë")
  .replaceAll("\u00c3\u008c", "Ì")
  .replaceAll("\u00c3\u008d", "Í")
  .replaceAll("\u00c3\u008e", "Î")
  .replaceAll("\u00c3\u008f", "Ï")
  .replaceAll("\u00c3\u00ac", "ì")
  .replaceAll("\u00c3\u00ad", "í")
  .replaceAll("\u00c3\u00ae", "î")
  .replaceAll("\u00c3\u00af", "ï")
  .replaceAll("\u00c3\u0091", "Ñ")
  .replaceAll("\u00c3\u00b1", "ñ")
  .replaceAll("\u00c3\u0092", "Ò")
  .replaceAll("\u00c3\u0093", "Ó")
  .replaceAll("\u00c3\u0094", "Ô")
  .replaceAll("\u00c3\u0095", "Õ")
  .replaceAll("\u00c3\u0096", "Ö")
  .replaceAll("\u00c3\u0098", "Ø")
  .replaceAll("\u00c5\u0092", "Œ")
  .replaceAll("\u00c3\u00b2", "ò")
  .replaceAll("\u00c3\u00b3", "ó")
  .replaceAll("\u00c3\u00b4", "ô")
  .replaceAll("\u00c3\u00b5", "õ")
  .replaceAll("\u00c3\u00b6", "ö")
  .replaceAll("\u00c3\u00b8", "ø")
  .replaceAll("\u00c5\u0093", "œ")
  .replaceAll("\u00c3\u0099", "Ù")
  .replaceAll("\u00c3\u009a", "Ú")
  .replaceAll("\u00c3\u009b", "Û")
  .replaceAll("\u00c3\u009c", "Ü")
  .replaceAll("\u00c3\u00b9", "ù")
  .replaceAll("\u00c3\u00ba", "ú")
  .replaceAll("\u00c3\u00bb", "û")
  .replaceAll("\u00c3\u00bc", "ü")
  .replaceAll("\u00c3\u009d", "Ý")
  .replaceAll("\u00c5\u00b8", "Ÿ")
  .replaceAll("\u00c3\u00bd", "ý")
  .replaceAll("\u00c3\u00bf", "ÿ");

Answer 1

Try mb_convert_encoding() with the "to" encoding as 'HTML-ENTITIES', and (if necessary) the "from" encoding set to 'UTF-8' or whichever Unicode encoding you're using.

Answer 2

Use strtr, it's blazing fast.