yii\caching\ArrayCache::addValue PHP Method

    protected function addValue($key, $value, $duration)
    {
        if (isset($this->_cache[$key]) && ($this->_cache[$key][1] === 0 || $this->_cache[$key][1] > microtime(true))) {
            return false;
        } else {
            $this->_cache[$key] = [$value, $duration === 0 ? 0 : microtime(true) + $duration];
            return true;
        }
    }