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Mysql存取session实例

 2005-04-28 16:18:37 来源:WEB开发网   
核心提示:files:common/Common.config.phpinclude/session.inc.phpsession_test.phpget_session_test.phpget_session_test2.php Common.config.php <?php/** Common config* By 恋

files:
common/Common.config.php
include/session.inc.php
session_test.php
get_session_test.php
get_session_test2.php


Common.config.php
 
<?php
/*
* Common config
* By 恋太后天
*/


/*
* Database config
*/
define( "DBTYPE", "MySQL" );
$database = array
(
   "mysql" => array
   (
     "default" => array
     (
        "host"   => "localhost",
        "user"   => "root",
        "passWord" => "",
        "dbname"  => ""
     ),
     "session" => array
     (
        "host"   => "localhost",
        "user"   => "session",
        "password" => "session",
        "dbname"  => "sessions"
     )
   )
);

?>


session.inc.php

 
<?php
//使用mysql存放session 函数表
// by 恋太后天 2005-4-28

if (!isset($include_path)) $include_path = '';

if (!is_array($database))
{
   include ($include_path."common/Common.config.php");
}

$DBsess    = $database[DBTYPE]["session"];
$DBsess_link = mysql_connect($DBsess["host"], $DBsess["user"], $DBsess["password"])
        or die ("Error:<em>Can not connect to Mysql server.</em>");

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

function sess_open($path, $name)
{
   return true;
}

function sess_close()
{
   return true;
}

function sess_read($id)
{
   global $DBsess , $DBsess_link;
   mysql_select_db($DBsess["dbname"]);
   $now = time();
   $result = mysql_query("SELECT `data` FROM `sessions`
              WHERE `id`= '$id' AND `expiry_time` > $now", $DBsess_link);  
   if (list($data) = mysql_fetch_row($result))
   { 
    return $data; 
   } 
   return false;
}

function sess_write($id, $data)
{
   global $DBsess , $DBsess_link, $SESS_LIFE;
   mysql_select_db($DBsess["dbname"]);

   $expiry_time = time() + $SESS_LIFE;

   if ( !get_magic_quotes_gpc() )
   {
     $data = addslashes($data);
   }

   $now = time();

   $result = mysql_query("INSERT into `sessions` (`id`, `expiry_time`,  `data`)", $DBsess_link);

   if ( !$result )
   {
     $result = mysql_query("UPDATE `sessions` SET `data`='$data', `expiry_time`=$expiry_time
                WHERE `id` = '$id' AND `expiry_time` > $now", $DBsess_link);
   }

   return $result;
}

function sess_destroy($id)
{
   global $DBsess , $DBsess_link;
   mysql_select_db($DBsess["dbname"]);
   $query = mysql_query("DELETE FROM `session` WHERE `id`='$id'");
   return $query;
}

function sess_gc($maxlifetime)
{
   global $DBsess , $DBsess_link; 
   $query = mysql_query("DELETE FROM `sessions` WHERE `expiry_time` < " . time(), $DBsess_link); 
   return mysql_affected_rows($DBsess_link); 

}

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

?>


session_test.php
 
<?php
// test for using session
include ("common/Common.config.php");
include ("include/session.inc.php");

session_start();

$_SESSION["abc"] = "A: I will be back!";
$_SESSION["meto"] = "B: Me too ";
echo "<a href=\"get_session_test.php\">click me</a>";

?>

get_session_test.php


 
<?php
// test for using session
include ("common/Common.config.php");
include ("include/session.inc.php");

session_start();
/*
* www.cncms.com
*/
$_SESSION["c"] = "<br>C: I will follow U. ^0^!";
PRint($_SESSION["abc"]);
print("<br>");
print($_SESSION["meto"]);
echo "<br>".
   "<a href=\"get_session_test2.php\">click again</a>";

?>


get_session_test2.php

 
<?php
//get_session_test2.php
// test for using session
include ("common/Common.config.php");
include ("include/session.inc.php");

session_start();
print($_SESSION["c"]);
?>

Tags:Mysql 存取 session

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