php中session写入数据库的方法

本篇文章主要介绍php中session写入数据库的方法，感兴趣的朋友参考下，希望对大家有所帮助。本文实例介绍了phpsession 写入数据代码如下：

config = $args;
    $this->maxlifetime = get_cfg_var("session.gc_maxlifetime");
    session_set_save_handler(
    array($this, "open"),
    array($this, "close"),
    array($this, "read"),
    array($this, "write"),
    array($this, "destroy"),
    array($this, "gc"));
     
  }
   
  public function open() {
    $this->link = mysqli_connect(
    $this->config['host'], 
    $this->config['user'], 
    $this->config['password'], 
    $this->config['database']);
    mysqli_set_charset($this->link, "utf8");
    $sql = 'CREATE TABLE IF NOT EXISTS `%s` (
    `session_id` varchar(255) NOT NULL,
    `session_data` text,
    `session_expires` char(10) NOT NULL,
    PRIMARY KEY (`session_id`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;';
    $sql = sprintf($sql, $this->config['table']);
    mysqli_query($this->link, $sql);
    return true;
  }
   
  public function close() {
    return true;
  }
   
   
  public function read($session_id) {
    if(empty($session_id)) return null;
     
    $sql = 'SELECT `session_data` AS `data` FROM `%s` WHERE `session_id` = "%s" AND `session_expires` > "%u"';
    $sql = sprintf($sql, 
    mysqli_real_escape_string($this->link, $this->config['table']), 
    mysqli_real_escape_string($this->link, $session_id),
    time());
     
    $result = mysqli_query($this->link, $sql);
    $row = mysqli_fetch_assoc($result);
    return $row['data'];
     
  }
   
  public function write($session_id, $session_data) {
    if(empty($session_id)) return null;
     
    $newExpires = time() + $this->maxlifetime;
    $sql = 'REPLACE INTO `%s` SET `session_id` = "%s", `session_data` = "%s", `session_expires` = "%u"';
    $sql = sprintf($sql, 
    mysqli_real_escape_string($this->link, $this->config['table']), 
    mysqli_real_escape_string($this->link, $session_id),
    mysqli_real_escape_string($this->link, $session_data),
    $newExpires);
     
    $result = mysqli_query($this->link, $sql);
    return mysqli_affected_rows($this->link);
     
  }
   
  public function destroy($session_id) {
    $sql = 'DELETE FROM `%s` WHERE `session_id` = "%s"';
    $sql = sprintf($sql, 
    mysqli_real_escape_string($this->link, $this->config['table']), 
    mysqli_real_escape_string($this->link, $session_id));
 
    $result = mysqli_query($this->link, $sql);
    return mysqli_affected_rows($this->link);
  }
   
  public function gc() {
    $sql = 'DELETE FROM `%s` WHERE `session_expires` < "%u"';
    $sql = sprintf($sql, 
    mysqli_real_escape_string($this->link, $this->config['table']), 
    time());
     
    $result = mysqli_query($this->link, $sql);
    return mysqli_affected_rows($this->link);
  }
   
}
 
class session {
 
  public static $collection = null;
   
  public static function open($clean = false, $token = false) {
    if($clean) ob_end_clean();
    if($token) session_id($token);
    session_start();
    self::$collection = $_SESSION;
  }
   
  public static function id() {
    $num_args = func_num_args();
    if($num_args) {
      $args = func_get_arg(0);
      return session_id($args);
    }else{
      return session_id();
    }
  }
   
  public static function get($name) {
    return isset($_SESSION[$name]) ? $_SESSION[$name] : null;
  }
   
  public static function set($name, $value) {
    $_SESSION[$name] = $value;
    return true;
  }
   
  public static function delete($name) {
    if(!isset($_SESSION[$name])) return null;
    unset($_SESSION[$name]);
    return true;
  }
   
  public static function destroy() {
    session_destroy();
  }
   
}
 
 
 
$config = array(
"host"=> "127.0.0.1",
"user"=> "root",
"password"=> "123456",
"database"=> "test",
"charset"=> "utf8",
"table"=> "user_session");
 
session_handler::init($config);
session::open();
session::set("profile", array("id"=> 1, "user"=> "haowei", "vip-level"=> 6));

总结：以上就是本篇文的全部内容，希望能对大家的学习有所帮助。

相关推荐： 

php 数组随机取值的方法及简单实例

php字符串的替换，分割和连接方法图文详解

SmartB2B行业电子商务

SmartB2B 是一款基于PHP、MySQL、Smarty的B2B行业电子商务网站管理系统，系统提供了供求模型、企业模型、产品模型、人才招聘模型、资讯模型等模块，适用于想在行业里取得领先地位的企业快速假设B2B网站，可以运行于Linux与Windows等多重服务器环境，安装方便，使用灵活。 系统使用当前流行的PHP语言开发，以MySQL为数据库，采用B/S架构，MVC模式开发。融入了模型化、模板

下载

立即学习“PHP免费学习笔记（深入）”；

php文件系统处理方法总结