redis 替代php文件存储session的实例
查看实例之前请先了解 PHP session_set_save_handler函数的用法
定义个SessionManager 类
class SessionManager {
private $redis;
public function __construct(){
$this->redis = new Redis();
$this->redis->connect('192.168.0.102', 6379);
$retval =session_set_save_handler(
array($this,"open"),
array($this,"close"),
array($this,"read"),
array($this,"write"),
array($this,"destroy"),
array($this,"gc")
);
session_start();
}
public function open($path,$name){
return true;
}
public function close(){
return true;
}
public function read($id){
$session_value = $this->redis->get($id);
if($session_value){
return $session_value;
}else{
return "";
}
}
public function write($id,$data){
if($this->redis->set($id,$data)){
return true;
}else{
return false;
}
}
public function destroy($id){
if($this->redis->delete($id)){
return true;
}else{
return false;
}
}
public function gc($maxlifetime){
return true;
}
public function __destruct(){
session_write_close();
}
}
创建一个session_set.php 代码如下
include("SessionManager.php");
new SessionManager();
$_SESSION['user_name']="xxdcsnd@sina.com";
创建一个session_set.php 代码如下
include("SessionManager.php");
new SessionManager();
echo $_SESSION['user_name'];
测试输出 结果 xxdcsnd@sina.com
注意 ：php.ini session.save-hadler 设置为 user ，否则session_set_save_handler 不会生效
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