通過redis實現session共用-php

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<?phpclass redisSession{    /**     * 儲存session的資料庫表的資訊     */    private $_options = array(        ‘handler‘ => null, //資料庫連接控制代碼        ‘host‘ => null,        ‘port‘ => null,        ‘lifeTime‘ => null,        ‘prefix‘   => ‘PHPREDIS_SESSION:‘    );    /**     * 建構函式     * @param $options 設定資訊數組     */    public function __construct($options=array()){        if(!class_exists("redis", false)){            die("必須安裝redis擴充");        }        if(!isset($options[‘lifeTime‘]) || $options[‘lifeTime‘] <= 0){            $options[‘lifeTime‘] = ini_get(‘session.gc_maxlifetime‘);        }        $this->_options = array_merge($this->_options, $options);    }    /**     * 開始使用該驅動的session     */    public function begin(){        if($this->_options[‘host‘] === null ||           $this->_options[‘port‘] === null ||           $this->_options[‘lifeTime‘] === null        ){            return false;        }        //設定session處理函數        session_set_save_handler(            array($this, ‘open‘),            array($this, ‘close‘),            array($this, ‘read‘),            array($this, ‘write‘),            array($this, ‘destory‘),            array($this, ‘gc‘)        );    }    /**     * 自動開始回話或者session_start()開始回話後第一個調用的函數     * 類似於建構函式的作用     * @param $savePath 預設的儲存路徑     * @param $sessionName 預設的參數名，PHPSESSID     */    public function open($savePath, $sessionName){        if(is_resource($this->_options[‘handler‘])) return true;        //串連redis        $redisHandle = new Redis();        $redisHandle->connect($this->_options[‘host‘], $this->_options[‘port‘]);        if(!$redisHandle){            return false;        }        $this->_options[‘handler‘] = $redisHandle;//        $this->gc(null);        return true;    }    /**     * 類似於解構函式，在write之後調用或者session_write_close()函數之後調用     */    public function close(){        return $this->_options[‘handler‘]->close();    }    /**     * 讀取session資訊     * @param $sessionId 通過該Id唯一確定對應的session資料     * @return session資訊/空串     */    public function read($sessionId){        $sessionId = $this->_options[‘prefix‘].$sessionId;         return $this->_options[‘handler‘]->get($sessionId);    }    /**     * 寫入或者修改session資料     * @param $sessionId 要寫入資料的session對應的id     * @param $sessionData 要寫入的資料，已經序列化過了     */    public function write($sessionId, $sessionData){        $sessionId = $this->_options[‘prefix‘].$sessionId;         return $this->_options[‘handler‘]->setex($sessionId, $this->_options[‘lifeTime‘], $sessionData);    }    /**     * 主動銷毀session會話     * @param $sessionId 要銷毀的會話的唯一id     */    public function destory($sessionId){        $sessionId = $this->_options[‘prefix‘].$sessionId; //        $array = $this->print_stack_trace();//        log::write($array);        return $this->_options[‘handler‘]->delete($sessionId) >= 1 ? true : false;    }    /**     * 清理繪畫中的到期資料     * @param 有效期間     */    public function gc($lifeTime){        //擷取所有sessionid，讓到期的釋放掉        //$this->_options[‘handler‘]->keys("*");        return true;    }    //列印堆棧資訊    public function print_stack_trace()    {        $array = debug_backtrace ();        //截取使用者資訊        $var = $this->read(session_id());        $s = strpos($var, "index_dk_user|");        $e = strpos($var, "}authId|");        $user = substr($var,$s+14,$e-13);        $user = unserialize($user);        //print_r($array);//資訊很齊全        unset ( $array [0] );        if(!empty($user)){          $traceInfo = $user[‘id‘].‘|‘.$user[‘user_name‘].‘|‘.$user[‘user_phone‘].‘|‘.$user[‘presona_name‘].‘++++++++++++++++\n‘;        }else{          $traceInfo = ‘++++++++++++++++\n‘;        }        $time = date ( "y-m-d H:i:m" );        foreach ( $array as $t ) {            $traceInfo .= ‘[‘ . $time . ‘] ‘ . $t [‘file‘] . ‘ (‘ . $t [‘line‘] . ‘) ‘;            $traceInfo .= $t [‘class‘] . $t [‘type‘] . $t [‘function‘] . ‘(‘;            $traceInfo .= implode ( ‘, ‘, $t [‘args‘] );            $traceInfo .= ")\n";        }        $traceInfo .= ‘++++++++++++++++‘;        return $traceInfo;    }}

入口處調用

$handler = new redisSession(array(                ‘host‘ => "127.0.0.1",                ‘port‘ => "6379"        ));$handler->begin();

 

通過redis實現session共用-php