``` //这个类似用来获取访客信息的 //方便统计 class visitorInfo { //获取访客ip public function getIp() { $ip = false; if (!empty($_SERVER["HTTP_CLIENT_IP"])) { $ip = $_SERVER["HTTP_CLIENT_IP"]; } if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ips = explode(", ", $_SERVER['HTTP_X_FORWARDED_FOR']); if ($ip) { array_unshift($ips, $ip); $ip = FALSE; } for ($i = 0; $i < count($ips); $i++) { if (!eregi("^(10│172.16│192.168).", $ips[$i])) { $ip = $ips[$i]; break; } } } return ($ip ? $ip : $_SERVER['REMOTE_ADDR']); } //根据ip获取城市、网络运营商等信息 public function findCityByIp($ip) { $data = file_get_contents('http://ip.taobao.com/service/getIpInfo.php?ip='.$ip); return json_decode($data, $assoc = true); } //获取用户浏览器类型 public function getBrowser() { $agent = $_SERVER["HTTP_USER_AGENT"]; if (strpos($agent, 'MSIE') !== false || strpos($agent, 'rv:11.0')) //ie11判断 return "ie"; else if (strpos($agent, 'Firefox') !== false) return "firefox"; else if (strpos($agent, 'Chrome') !== false) return "chrome"; else if (strpos($agent, 'Opera') !== false) return 'opera'; else if ((strpos($agent, 'Chrome') == false) && strpos($agent, 'Safari') !== false) return 'safari'; else return 'unknown'; } //获取网站来源 public function getFromPage() { return $_SERVER['HTTP_REFERER']; } } ```