Weird SERIALIZE and UNSERIALIZE problem!

[solinent]

From my main site the follow snippet of code to get the users currently online and sort (sessions are stored in db properly).
$db is just a wrapper so that I can switch dbs and make things easier for myself.  $db->recordSet[''] will contain the data within the current record (it works, I've used it in other places).

This is the code.
[code]
<?php
$i=0;
while ($db->sql_array()) {
$sessionDat = unserialize($db->recordSet['Data']);
if (is_array($sessionDat)) {
print_r($sessionDat);
$user[$i] = $sessionDat['username'];
echo "{".$user[$i]."}";
} else {
print_r(unserialize($db->recordSet['Data']));
die("not array".$db->recordSet['SessionID']."{".$db->recordSet['Data']."}");
}
$i++;
}
sort($user);
?>[/code]
It produces this output (die() is called).
[code]not array43b3119f405da246159cbf23ac494a1b{test|s:4:"test";username|s:8:"solinent";}[/code]

The Data field is returning a weird value (it is used in conjunction with sesssion_set_save_handler).  When I run the following code:
[code]
<pre>
<?php
// Serialize an array
$serialized_data = serialize (array ('test' => 'uno', 'dos', 'tres'));

// Show what the serialized data looks like
print $serialized_data . "\n\n";

// Unserialize the data
$var = unserialize ($serialized_data);

// Show what the unserialized data looks like.
var_dump ($var);
?>
</pre>
[/code]

It gives me this output:
[code]
a:3:{s:4:"test";s:3:"uno";i:0;s:3:"dos";i:1;s:4:"tres";}

array(3) {
  ["test"]=>
  string(3) "uno"
  [0]=>
  string(3) "dos"
  [1]=>
  string(4) "tres"
}
[/code]

What's wrong?

[printf]

Check the database and see if that row field Data is messed up, if it is then it your save session handler!

[solinent]

Data is stored by setting $_SESSION

Here's my sess.php: (I only use $db in one place because I thought it was a problem -- I was debugging.  It does work, and I can show you my simple $db class (minus connect).
[code]
<?php
if (!defined('def_sess')) {
define('def_sess', true);
require_once("db.class.php");
$db = new db;
$db->connect();

function sess_open($sess_path, $sess_name) {
  return true;
}

function sess_close() {
  return true;
}

function sess_read($sess_id) {
  global $db;
  $db->query("SELECT Data FROM sessions WHERE SessionID = '$sess_id';");
  if (!$db->count_rows()) {
    $CurrentTime = time();
    $db->execute("INSERT INTO sessions (SessionID, DateTouched) VALUES ('$sess_id', $CurrentTime);");
    return '';
  } else {
    extract(mysql_fetch_array($result), EXTR_PREFIX_ALL, 'sess');
    $db->execute("UPDATE sessions SET DateTouched = $CurrentTime WHERE SessionID = '$sess_id';");
    return $sess_Data;
  }
}

function sess_write($sess_id, $data) {
  $CurrentTime = time();
  mysql_query("UPDATE sessions SET Data = '$data', DateTouched = $CurrentTime WHERE SessionID = '$sess_id';");
  return true;
}

function sess_destroy($sess_id) {
  mysql_query("DELETE FROM sessions WHERE SessionID = '$sess_id';");
  $GLOBALS['destroied'] = true;
  return true;
}

function sess_gc($sess_maxlifetime) {
  $CurrentTime = time();
  mysql_query("DELETE FROM sessions WHERE DateTouched + $sess_maxlifetime < $CurrentTime;");
  return true;
}

session_set_save_handler("sess_open", "sess_close", "sess_read", "sess_write", "sess_destroy", "sess_gc");
session_start();
}
?>
[/code]


EDIT: SOLVED! I looked through PHP.net comments and found this nifty function!  Weird :S

[code]
function unserialize_session_data( $serialized_string ) {
  $variables = array(  );
  $a = preg_split( "/(\w+)\|/", $serialized_string, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE );
  for( $i = 0; $i < count( $a ); $i = $i+2 ) {
      $variables[$a[$i]] = unserialize( $a[$i+1] );
  }
  return( $variables );
}
[/code]