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session.php
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session.php
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<?php
class Session
{
###########################################################################
private $expiry = 3600;
private $securityCode = "gnvriev847e8grdinvrdg5e8g4r7fr7rdvreh8^£*^£FGgyhf";
private $tableName = "session_data";
###########################################################################
private $dbh;
function __construct(Database $db)
{
ini_set('session.cookie_lifetime', 0);
ini_set('session.gc_maxlifetime', $this->expiry);
}
function open($save_path, $session_name)
{
return true;
}
function close()
{
return true;
}
function read($session_id)
{
$db = new PDO("mysql:host=localhost;dbname=cs174", "root", "");
$sql = "SELECT favorites FROM session where sessionID =" . $db->quote($sessionId);
$result = $db->query($sql);
$data = $result->fetchColumn();
$result->closeCursor();
return $data;
}
function write($session_id, $session_data)
{
$db = new PDO("mysql:host=localhost;dbname=cs174", "root", "");
$fav = $_SESSION["favorites"];
$userID = $_COOKIES["loggedIn"];
$sql = "INSERT INTO session SET sessionID =" . $db->quote($sessionId) . ", favorites =" . $db->quote($data) . " ON DUPLICATE KEY UPDATE favorites =" . $db->quote($data);
$db->query($sql);
}
function destroy($session_id)
{
$db = new PDO("mysql:host=localhost;dbname=cs174", "root", "");
$sql = "DELETE FROM session WHERE sessionID =" . $db->quote($sessionId);
$db->query($sql);
setcookie(session_name(), "", time() - 3600);
}
function clean($maxLifeTime)
{
try {
$x = time() - $maxLifeTime;
$stmt = $this->dbh->prepare("
DELETE FROM :tableName
WHERE session_expire < :x
");
$stmt->bindParam("tableName", $this->tableName, PDO::PARAM_STR);
$stmt->bindParam("x", $x, PDO::PARAM_INT);
$stmt->execute();
} catch (PDOException $e) {
die($e->getMessage());
}
return true;
}
function delete()
{
$oldID = session_id();
session_regenerate_id();
$this->destroy($oldID);
session_unset();
session_destroy();
}
function getActive()
{
$this->clean($this->expiry);
try {
$stmt = $this->dbh->prepare("
SELECT COUNT(session_id) as count
FROM :tableName
");
$stmt->bindParam("tableName", $this->tableName, PDO::PARAM_STR);
$stmt->execute();
$rs = $stmt->fetch();
return $rs['count'];
} catch (PDOException $e) {
die($e->getMessage());
}
}
}
?>