<?

$session_key = "id";

$session_value = "data";

$session_time = "expire";

$sdbh = "";

$expire =  300;

function sess_open($save_path, $session_name){

	global $dbhost, $dbuser, $dbpasswd, $sdbh;

	if (! $sdbh = mysql_pconnect($dbhost, $dbuser, $dbpasswd)){

		echo mysql_error();

		exit;

	}

	return true;

}

function sess_close(){

	return true;

}

function sess_read($key){

	global $sdbh, $dbname, $tb_sessions, $session_key, $session_value, $session_time;

	$query = "

		select

			$session_value

		from

			$tb_sessions

		where

			$session_key = '$key'

		and

			$session_time > UNIX_TIMESTAMP()

	";

	$result = mysql_db_query($dbname, $query, $sdbh);

	if($record = mysql_fetch_row($result)){

		return $record[0];

	} else {

		return false;

	}

}

function sess_write($key, $val){

	global $sdbh, $dbname, $tb_sessions, $expire;

	$value = addslashes($val);

	$query = "

		replace into 

			$tb_sessions

		values (

			'$key',

			'$value',

			UNIX_TIMESTAMP() + $expire

		)

	";

	$result = mysql_db_query($dbname, $query, $sdbh);

	echo mysql_error();

	return $result;

}

function sess_destroy($key){

	global $sdbh, $dbname, $tb_sessions, $session_key;

	$query = "

		delete from

			$tb_sessions

		where

			$session_key = '$key'

	";

	$result = mysql_db_query($dbname, $query, $sdbh);

	return $result;

}

function sess_gc($maxlifetime){

	global $sdbh, $dbname, $tb_sessions, $session_time;

	$query = "

		delete from

			$tb_sessions

		where

			$session_time < UNIX_TIMESTAMP()

	";

	$result = mysql_db_query($dbname, $query, $sdbh);

	return mysql_affected_rows($sdbh);

}

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

?>