function sess_open($save_path, $session_name) {
global $hostname, $dbusername, $dbpassword, $dbname, $sess_dbh;
//$sess_dbh=mysql_pconnect($hostname,$dbusername,$dbpassword) or die("不克不及毗连数据库！");
$sess_dbh=mysql_pconnect('localhost','test','test') or die("不克不及毗连数据库！");
// mysql_select_db("$dbname") or die("不克不及选择数据库！");
mysql_select_db('test') or die("不克不及选择数据库！");
return(true);
}
function sess_close() {
//mysql_close();
return(true);
}
function sess_read($sid) {
global $sess_dbh;
$result = mysql_query("select data from sesslib where sid='$sid'", $sess_dbh);
$n=mysql_num_rows($result);
if($n==0) {
return("");
}
else {
$sess_data=mysql_result($result,0);
return($sess_data);
}
}
function sess_write($sid, $sess_data) {
global $sess_dbh;
if(!empty($sess_data)){
$r=mysql_query("insert into sesslib set sid='$sid',data='$sess_data',time=now()", $sess_dbh);
if(!$r) { // insertion failed, means the session is already there, update it
$r=mysql_query("update sesslib set sid='$sid', data='$sess_data', time=now() where sid='$sid'",$sess_dbh);
}
return $r;
}}
function sess_destroy($sid) {
global $sess_dbh;
$r=mysql_query("delete from sesslib where sid='$sid'", $sess_dbh);
return($r);
}
function sess_gc($maxlifetime) {
global $sess_dbh, $sess_maxlifetime;
$r=mysql_query("delete from sesslib where unix_timestamp(now())-unix_timestamp(time)>$sess_maxlifetime", $sess_dbh);
return mysql_affected_rows($sess_dbh);
}