摘要：
fp = fopen($filepath, 'rb'); //二制方式打开 $this->firstip = $this->get4b(); //第一条ip索引的绝对偏移地址 $this->lastip = $this->get4b(); //最后一条ip索引的绝对偏移地址 $this->totalip = ($this->lastip - $this->firstip) / 7; //ip总数 索引区是定长的7个字节,在此要除以7, register_shutdown_function(array($this, "close 阅读全文