<?
$diary_entries = array('121799','121899','121999','122199','122099','122399','122299',
'122699','122499','122799','122899','123099','122999','010800','123199','010100',
'010200','010500','010300','010700','010600','010900','011000','012100','011400',
'070700','012200','021500','071400','070800','071200','071300','073000','072000',
'072900','072800','073100','021801','021901','122802','122902','030301','030401',
'042701');
sort($diary_entries);
foreach ($diary_entries as $s) {
  $month = substr($s, 0, 2);
  $day = substr($s, 2, 2);
  $year = substr($s, 4, 2);
  $unix_timestamp = mktime(0,0,0, $month, $day, $year);
  print("$s = $unix_timestamp<br>");
}
?>