php session 写入数据库

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[PHP]代码

<?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"),"read"),"write"),"destroy"),"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']),$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,$session_data),$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,$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,$sql);
		return mysqli_affected_rows($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));

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