<?php |
class RedisSessionHandler implements SessionHandlerInterface{ |
private $redis; |
private $config; |
private $namespace; |
private $session_id = null; |
private $maxlifetime = null; |
|
public function __construct($namespace,$host,$port) { |
//初始化redis |
$this->config = array( |
'host'=>$host, |
'port'=>$port |
); |
$this->redis = new Redis(); |
$this->redis->connect($this->config['host'],$this->config['port']); |
//設(shè)置當(dāng)前的sessionid生成的命名空間 |
$this->namespace = $namespace; |
//設(shè)置初始化的session_id |
$session_name = ini_get("session.name"); |
//沒有設(shè)置過session，新的會(huì)話，需要重新生成sessionid |
if ( empty($_COOKIE[$session_name]) ) { |
$this->session_id = true; |
} |
} |
public function open($savePath, $sessionName){ |
$connect = $this->redis->connect($this->config['host'],$this->config['port']); |
if(!$connect) return false; |
//在初次設(shè)置的時(shí)候，重設(shè)PHP本身的session_id并判斷session_id是否已經(jīng)存在 |
$id = session_id(); |
if($this->session_id && $this->session_id != $id){ |
do{ |
$this->session_id = $this->session_id(); |
}while($this->redis->exists($this->namespace.'@'.$this->session_id)); |
session_id($this->session_id); |
} |
//設(shè)置生成周期 |
$this->maxlifetime = ini_get("session.gc_maxlifetime"); |
return true; |
} |
public function close(){ |
$this->redis->close(); |
return true; |
} |
public function read($id){ |
return $this->redis->get($this->namespace.'@'.$id); |
} |
public function write($id, $data){ |
return $this->redis->setex($this->namespace.'@'.$id,$this->maxlifetime,$data); |
} |
public function destroy($id){ |
$this->redis->delete($this->namespace.'@'.$id); |
return true; |
} |
public function gc($maxlifetime){ |
return true; |
} |
/** |
* 生成guid |
*/ |
private function session_id(){ |
$uid = uniqid("", true); |
$data = $this->namespace; |
$data .= $_SERVER['REQUEST_TIME']; |
$data .= $_SERVER['HTTP_USER_AGENT']; |
$data .= $_SERVER['SERVER_ADDR']; |
$data .= $_SERVER['SERVER_PORT']; |
$data .= $_SERVER['REMOTE_ADDR']; |
$data .= $_SERVER['REMOTE_PORT']; |
$hash = strtoupper(hash('ripemd128', $uid . md5($data))); |
return substr($hash,0,32); |
} |
} |
$param = array( |
"namespace"=>'', |
"redis_host"=>'127.0.0.1', |
"redis_port"=>'6379' |
); |
if($param){ |
$handler = new RedisSessionHandler($param['namespace'],$param['redis_host'],$param['redis_port']); |
session_set_save_handler($handler, true); |
}
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