Session in MySQL and save_handler...

I'm really struggling to get sessions going into MySQL. They work fine with
files. One thing I'm unsure about is what to set save_handler to when I've
got my own handler. My test script is simple, from an example at
phpbuilder.com. This all certainly seems straightforward, and I'm at a loss
to explain why it doesn't work.

August Zajonc

<?php
include("session_mysql.php");
session_register("count");
$HTTP_SESSION_VARS["count"]++;

?>

Hello visitor, you have seen this page <? echo $HTTP_SESSION_VARS["count"];
?> times.<p>

The session_mysql.php file follows:
-------

$SESS_DBHOST = "db9.pair.com";   /* database server hostname */
$SESS_DBNAME = "adboink_cw";   /* database name */
$SESS_DBUSER = "*****";    /* database user */
$SESS_DBPASS = "*****";    /* database password */

$SESS_DBH = "";
$SESS_LIFE = get_cfg_var("session.gc_maxlifetime");

function sess_open($save_path, $session_name) {
 global $SESS_DBHOST, $SESS_DBNAME, $SESS_DBUSER, $SESS_DBPASS, $SESS_DBH;

 if (! $SESS_DBH = mysql_pconnect($SESS_DBHOST, $SESS_DBUSER, $SESS_DBPASS))
{
  echo "<li>Can't connect to $SESS_DBHOST as $SESS_DBUSER";
  echo "<li>MySQL Error: ", mysql_error();
  die;
 }

 if (! mysql_select_db($SESS_DBNAME, $SESS_DBH)) {
  echo "<li>Unable to select database $SESS_DBNAME";
  die;
 }

 return true;
}

function sess_close() {
 return true;
}

function sess_read($key) {
 global $SESS_DBH, $SESS_LIFE;

 $qry = "SELECT value FROM sessions WHERE sesskey = '$key' AND expiry > " .
time();
 $qid = mysql_query($qry, $SESS_DBH);

 if (list($value) = mysql_fetch_row($qid)) {
  return $value;
 }

 return false;
}

function sess_write($key, $val) {
 global $SESS_DBH, $SESS_LIFE;

 $expiry = time() + $SESS_LIFE;
 $value = addslashes($val);

 $qry = "INSERT INTO sessions VALUES ('$key', $expiry, '$value')";
 $qid = mysql_query($qry, $SESS_DBH);

 if (! $qid) {
  $qry = "UPDATE sessions SET expiry = $expiry, value = '$value' WHERE
sesskey = '$key' AND expiry > " . time();
  $qid = mysql_query($qry, $SESS_DBH);
 }

 return $qid;
}

function sess_destroy($key) {
 global $SESS_DBH;

 $qry = "DELETE FROM sessions WHERE sesskey = '$key'";
 $qid = mysql_query($qry, $SESS_DBH);

 return $qid;
}

function sess_gc($maxlifetime) {
 global $SESS_DBH;

 $qry = "DELETE FROM sessions WHERE expiry < " . time();
 $qid = mysql_query($qry, $SESS_DBH);

 return mysql_affected_rows($SESS_DBH);
}

session_set_save_handler(
 "sess_open",
 "sess_close",
 "sess_read",
 "sess_write",
 "sess_destroy",
 "sess_gc");
?>