Heim >Backend-Entwicklung >PHP-Tutorial >php session 写入数据库_php技巧

php session 写入数据库_php技巧

WBOY
WBOYOriginal
2016-05-16 19:58:451819Durchsuche

本文实例介绍了php session 写入数据库的方法,分享给大家供大家参考,具体内容如下

<&#63;php
 
#
#  codeMaker Alpha 0.1.1 ( haowei.me )
#  This framework comply with the GPL license agreement
#
 
class session_handler {
   
  protected $maxlifetime = null;
  protected $dbHandle = null;
  public $config = null;
   
  public static function init($args) {
    return new self($args);
  }
   
  public function __construct($args) {
     
    $this->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]) &#63; $_SESSION[$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));

以上就是本文的全部内容,希望对大家的学习有所帮助。

Stellungnahme:
Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn