uniq 獲取 構造 ons jce ref key sta ack

class RedisSession { // 默認配置名稱（使用load_config加載） private $_default_config_path = ‘package/cache/redis_session‘;
// sessions 最大生存時間，單位：秒 public $max_life_time = 0; // 用作生成 session_id 的標識值 public $key_preffix = ‘‘;
// \package\cache\Redis 類的一個實例 public $redis = null; /** * 構造函數，自動賦予默認值 * * @access public * @param objcet $redis 指定一個特定的 \package\cache\Redis 實例 * @return void */ public function __construct($redis=null) { $conf = load_config($this -> _default_config_path); if (!is_array($conf) or empty($conf)) { to_log(MAIN_LOG_ERROR, ‘‘, __CLASS__ . ‘:‘ . __FUNCTION__ . ‘: 默認配置為空‘); return; }
isset($conf[‘max_life_time‘]) and $this -> max_life_time = $conf[‘max_life_time‘]; isset($conf[‘key_preffix‘]) and $this -> key_preffix = $conf[‘key_preffix‘];
empty($redis) and $redis = g(‘\\package\\cache\\Redis‘); $this -> redis = $redis; }
/** * 調用這個方法代替session_start * * @access public * @return void */ public function start() { session_set_save_handler( array(&$this, ‘open‘), array(&$this, ‘close‘), array(&$this, ‘read‘), array(&$this, ‘write‘), array(&$this, ‘destroy‘), array(&$this, ‘gc‘), array(&$this, ‘create_id‘) );
session_start(); }
/** * 獲取redis緩存變量名 * * @access public * @param string $str 使用該字符串生成key * @return string */ public function get_cache_key($str) { $key = md5($str); return $key; }
/** * 自定義session_id * * @access public * @return string */ public function create_id() { $time = time(); $ip = $this -> _get_ip(); $uid = uniqid($this -> key_preffix, TRUE); $rand = get_rand_str(13); $key_str = ‘session_id:ip:‘ . $ip . ‘:uid:‘ . $uid . ‘:time:‘ . $time . ‘:rand:‘ . $rand; $key = sha1($key_str); return $key; }
/** * session_open 將提交到該函數 * * @access public * @return boolean */ public function open($sess_id) { $cache_key = $this -> get_cache_key(session_id()); $ret = $this -> redis -> expire($cache_key, $this -> max_life_time); return $ret; } /** * session_close將提交到該函數 * * @access public * @return boolean */ public function close() { return true; } /** * session_read將提交到該函數 * * @access public * @param string $sess_id session_id * @return mixed */ public function read($sess_id) { $cache_key = $this -> get_cache_key($sess_id); $ret = $this -> redis -> get($cache_key); return $ret; } /** * session_write將提交到該函數 * * @access public * @param string $sess_id session_id * @param string $sess_data session數據 * @return boolean */ public function write($sess_id, $sess_data) { $cache_key = $this -> get_cache_key($sess_id); $ret = $this -> redis -> set($cache_key, $sess_data, $this -> max_life_time); return $ret; }
/** * session_destroy將提交到該函數 * * @access public * @param string $sess_id session_id * @return boolean */ public function destroy($sess_id) { session_unset(); $cache_key = $this -> get_cache_key($sess_id); $ret = $this -> redis -> delete($cache_key);
return $ret; }
/** * session的gc回收將托管到該方法 * * @access public * @return void */ public function gc() { }
private function _get_ip(){ static $ip = NULL; if ($ip !== NULL) return $ip; if (!empty($_SERVER[‘HTTP_X_FORWARDED_FOR‘])) { $ip = $_SERVER[‘HTTP_X_FORWARDED_FOR‘]; is_array($ip) and $ip = array_shift($ip); if (check_data($ip, ‘ip‘)) return $ip; } if (!empty($_SERVER[‘HTTP_CLIENT_IP‘])) { $ip = $_SERVER[‘HTTP_CLIENT_IP‘]; if (check_data($ip, ‘ip‘)) return $ip; } if (!empty($_SERVER[‘REMOTE_ADDR‘])) { $ip = $_SERVER[‘REMOTE_ADDR‘]; if (check_data($ip, ‘ip‘)) return $ip; } $ip = ‘‘; return $ip; } }

使用redis接管session