$gb_DBHOSTname = "127.0.0.1"; //主机的名称或是IP地址

02

$gb_DBname = "dbname"; //数据库名称

03

$gb_DBuser = "username"; //数据库用户名称

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$gb_DBpass = "pwd"; //数据库密码

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$gb_COOKIE_DOMAIN = '.a.com';

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$SESS_DBH = "";

07

$SESS_LIFE = get_cfg_var("session.gc_maxlifetime"); //得到session的最大有效期。

08

 session_id(); //不使用 GET/POST 变量方式

09

ini_set('session.use_trans_sid', 0); //设置垃圾回收最大生存时间

10

ini_set('session.gc_maxlifetime', 13600); //使用 COOKIE 保存 SESSION ID 的方式

11

ini_set('session.use_cookies', 1);

12

ini_set('session.cookie_path', '/'); //多主机共享保存 SESSION ID 的 COOKIE

13

ini_set("session.cookie_domain", $gb_COOKIE_DOMAIN);

14

//将 session.save_handler 设置为 user，而不是默认的 files session_module_name('user');

15

function sess_open($save_path, $session_name) {

16

    global $gb_DBHOSTname, $gb_DBname, $gb_DBuser, $gb_DBpass, $SESS_DBH;

17

    if (!$SESS_DBH = mysql_pconnect($gb_DBHOSTname, $gb_DBuser, $gb_DBpass)) {

18

        die('MySQL Error');

19

    }

20

    mysql_query("SET character_set_connection=utf8, character_set_results=utf8, character_set_client=binary", $SESS_DBH);

21

    if (!mysql_select_db($gb_DBname, $SESS_DBH)) {

22

        die('MySQL Error');

23

    }

24

    return true;

25

}

26

27

function sess_close() {

28

    global $SESS_DBH;

29

    //$SESS_DBH->Close();

30

    return true;

31

}

32

33

function sess_read($key) {

34

    global $SESS_DBH, $SESS_LIFE;

35

//      var_dump($SESS_DBH);

36

    $qry = "select session_data from sessions where session_id = '$key' ";

37

    $qid = mysql_query($qry, $SESS_DBH);

38

//      var_dump($qid);

39

    if (list ($value) = mysql_fetch_row($qid)) {

40

        return $value;

41

    }

42

    return false;

43

}

44

45

function sess_write($key, $val) {

46

    global $SESS_DBH, $SESS_LIFE;

47

    $session_last_access = time();

48

    $value = $val;

49

    $qry = "insert into  sessions values('$key',$session_last_access,'$value')";

50

    $qid = mysql_query($qry, $SESS_DBH);

51

    if (!$qid) {

52

        $qry = "update sessions set session_last_access=$session_last_access, session_data='$value' where session_id='$key' ";

53

        $qid = mysql_query($qry, $SESS_DBH);

54

    }

55

    return $qid;

56

}

57

58

function sess_destroy($key) {

59

    global $SESS_DBH;

60

    $qry = "delete from sessions where session_id = '$key'";

61

    $qid = mysql_query($qry, $SESS_DBH);

62

    return $qid;

63

}

64

65

function sess_gc($maxlifetime) {

66

    global $SESS_DBH;

67

    $old = time() - $maxlifetime;

68

    $old = mysql_real_escape_string($old);

69

    $qry = "delete from sessions where session_last_access < " . $old;

70

    $qid = mysql_query($qry, $SESS_DBH);

71

    return mysql_affected_rows($SESS_DBH);

72

}

73

session_module_name();

74

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

75

session_start();