后端开发|php教程
php,Session写入数据库
后端开发-php教程
使用session_set_save_handler()函数，将Session的内容写入数据库
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prepare($sql);$stmt->execute(array($PHPSESSID));if(!$result = $stmt->fetch(PDO::FETCH_ASSOC)){ return \;}if(self::$ip == $result[client_ip]){ self::destroy($PHPSESSID); return \;}if(($result[update_time]+self::$lifetime)prepare($sql);$stmt->execute(array($PHPSESSID)); if($result=$stmt->fetch(PDO::FETCH_ASSOC)){if($result[data] != $data || self::$time > ($result[update_time]+30)){$sql = "update session set update_time=?,data=? where PHPSESSID = ?";$stmt = self::$handler->prepare($sql);$stmt->execute(array($self::$time,$data,$PHPSESSID)); }}else{ if(!empty($data)){try{ $sql = "insert into session(PHPSESSID,update_time,client_ip,data) values(?,?,?,?)";}catch(PDOException $e){ echo $e->getMessage();}$sth = self::$handler->prepare($sql);$sth->execute(array($PHPSESSID,self::$time,self::$ip,$data)); }}return true; } public static function destroy($PHPSESSID){$sql = "delete from session where PHPSESSID = ?";$stmt = self::$handler->prepare($sql);$stmt->execute(array($PHPSESSID));return true; } public static function gc($lifetime){$sql = "delete from session where update_timeprepare($sql);$stmt->execute(array(self::$time-$lifetime));return true; } } //使用PDO连接数据库 try{ $pdo = new PDO("mysql:host=localhost;dbname=session","root","hwj193"); }catch(PDOException $e){ echo $e->getMessage(); } //传递数据库资源 Session::start($pdo);
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