code:

---

<?

$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);

$as_timestamps = array();

$i = 0;

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>");

  $as_timestamps[$i] = $unix_timestamp;

  $i++;

}

sort($as_timestamps);

print("<br>Now sorted by timestamp, oldest to newest<br>");

foreach ($as_timestamps as $s) {

  $diary_entry = date("mdy", $s);

  print("$s = $diary_entry<br>");

}



$last_diary = $as_timestamps[$i-2];

$diary_entry = date("mdy", $last_diary);

print("<br>Most recent diary entry is: <b>$diary_entry</b>");

?>

---