src/Storage/File.php
public function read($uid) {
        if (!$this->has($uid)) {
            return false;
        }
        $contents = file_get_contents($this->dir . '/' . $uid);
        return unserialize($contents);
    }
public function read($uid) {
        if (!$this->has($uid)) {
            return false;
        }
        $contents = file_get_contents($this->dir . '/' . $uid);
        return unserialize($contents);
    }
Read datas with $uid key
@param mixed $uid
@return mixed