PHP 记录访客的浏览信息方法

<?php
//echo $_SERVER['HTTP_USER_AGENT'];
//echo "<br />".$_SERVER ['REMOTE_ADDR'];
/**
 * 获取客户端类型，手机还是电脑，以及相应的操作系统类型。
 *
 * @param string $subject
 */
function get_os($agent) {
  $os = false;
  if (preg_match ( '/win/i', $agent ) && strpos ( $agent, '95' )) {
    $os = 'Windows 95';
  } else if (preg_match ( '/win 9x/i', $agent ) && strpos ( $agent, '4.90' )) {
    $os = 'Windows ME';
  } else if (preg_match ( '/win/i', $agent ) && preg_match ( '/98/i', $agent )) {
    $os = 'Windows 98';
  } else if (preg_match ( '/win/i', $agent ) && preg_match ( '/nt 6.0/i', $agent )) {
    $os = 'Windows Vista';
  } else if (preg_match ( '/win/i', $agent ) && preg_match ( '/nt 6.1/i', $agent )) {
    $os = 'Windows 7';
  } else if (preg_match ( '/win/i', $agent ) && preg_match ( '/nt 6.2/i', $agent )) {
    $os = 'Windows 8';
  } else if (preg_match ( '/win/i', $agent ) && preg_match ( '/nt 10.0/i', $agent )) {
    $os = 'Windows 10'; // 添加win10判断
  } else if (preg_match ( '/win/i', $agent ) && preg_match ( '/nt 5.1/i', $agent )) {
    $os = 'Windows XP';
  } else if (preg_match ( '/win/i', $agent ) && preg_match ( '/nt 5/i', $agent )) {
    $os = 'Windows 2000';
  } else if (preg_match ( '/win/i', $agent ) && preg_match ( '/nt/i', $agent )) {
    $os = 'Windows NT';
  } else if (preg_match ( '/win/i', $agent ) && preg_match ( '/32/i', $agent )) {
    $os = 'Windows 32';
  } else if (preg_match ( '/linux/i', $agent )) {
    if(preg_match("/Mobile/", $agent)){
      if(preg_match("/QQ/i", $agent)){
        $os = "Android QQ Browser";
      }else{
        $os = "Android Browser";
      }
    }else{
      $os = 'PC-Linux';
    }
  } else if (preg_match ( '/Mac/i', $agent )) {
    if(preg_match("/Mobile/", $agent)){
      if(preg_match("/QQ/i", $agent)){
        $os = "IPhone QQ Browser";
      }else{
        $os = "IPhone Browser";
      }
    }else{
      $os = 'Mac OS X';
    }
  } else if (preg_match ( '/unix/i', $agent )) {
    $os = 'Unix';
  } else if (preg_match ( '/sun/i', $agent ) && preg_match ( '/os/i', $agent )) {
    $os = 'SunOS';
  } else if (preg_match ( '/ibm/i', $agent ) && preg_match ( '/os/i', $agent )) {
    $os = 'IBM OS/2';
  } else if (preg_match ( '/Mac/i', $agent ) && preg_match ( '/PC/i', $agent )) {
    $os = 'Macintosh';
  } else if (preg_match ( '/PowerPC/i', $agent )) {
    $os = 'PowerPC';
  } else if (preg_match ( '/AIX/i', $agent )) {
    $os = 'AIX';
  } else if (preg_match ( '/HPUX/i', $agent )) {
    $os = 'HPUX';
  } else if (preg_match ( '/NetBSD/i', $agent )) {
    $os = 'NetBSD';
  } else if (preg_match ( '/BSD/i', $agent )) {
    $os = 'BSD';
  } else if (preg_match ( '/OSF1/i', $agent )) {
    $os = 'OSF1';
  } else if (preg_match ( '/IRIX/i', $agent )) {
    $os = 'IRIX';
  } else if (preg_match ( '/FreeBSD/i', $agent )) {
    $os = 'FreeBSD';
  } else if (preg_match ( '/teleport/i', $agent )) {
    $os = 'teleport';
  } else if (preg_match ( '/flashget/i', $agent )) {
    $os = 'flashget';
  } else if (preg_match ( '/webzip/i', $agent )) {
    $os = 'webzip';
  } else if (preg_match ( '/offline/i', $agent )) {
    $os = 'offline';
  } else {
    $os = '未知操作系统';
  }
  return $os;
}
/**
 * 获取 客户端的浏览器类型
 * @return string
 */
function get_broswer($sys){
  if (stripos($sys, "Firefox/") > 0) {
    preg_match("/Firefox\/([^;)]+)+/i", $sys, $b);
    $exp[0] = "Firefox";
    $exp[1] = $b[1]; //获取火狐浏览器的版本号
  } elseif (stripos($sys, "Maxthon") > 0) {
    preg_match("/Maxthon\/([\d\.]+)/", $sys, $aoyou);
    $exp[0] = "傲游";
    $exp[1] = $aoyou[1];
  } elseif (stripos($sys, "MSIE") > 0) {
    preg_match("/MSIE\s+([^;)]+)+/i", $sys, $ie);
    $exp[0] = "IE";
    $exp[1] = $ie[1]; //获取IE的版本号
  } elseif (stripos($sys, "OPR") > 0) {
    preg_match("/OPR\/([\d\.]+)/", $sys, $opera);
    $exp[0] = "Opera";
    $exp[1] = $opera[1];
  } elseif(stripos($sys, "Edge") > 0) {
    //win10 Edge浏览器 添加了chrome内核标记 在判断Chrome之前匹配
    preg_match("/Edge\/([\d\.]+)/", $sys, $Edge);
    $exp[0] = "Edge";
    $exp[1] = $Edge[1];
  } elseif (stripos($sys, "Chrome") > 0) {
    preg_match("/Chrome\/([\d\.]+)/", $sys, $google);
    $exp[0] = "Chrome";
    $exp[1] = $google[1]; //获取google chrome的版本号
  } elseif(stripos($sys,'rv:')>0 && stripos($sys,'Gecko')>0){
    preg_match("/rv:([\d\.]+)/", $sys, $IE);
    $exp[0] = "IE";
    $exp[1] = $IE[1];
  }else {
    $exp[0] = "未知浏览器";
    $exp[1] = "";
  }
  return $exp[0].'('.$exp[1].')';
}
/**
 * 根据 客户端IP 获取到其具体的位置信息
 * @param unknown $ip
 * @return string
 */
function get_address_by_ip($ip) {
  $url = "http://ip.taobao.com/service/getIpInfo.php?ip=".$ip;
  $curl = curl_init();
  curl_setopt($curl, CURLOPT_URL, $url);
  curl_setopt($curl, CURLOPT_HEADER, 0);
  curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
  $info = curl_exec($curl);
  curl_close($curl);
  return $info;
}
function clientlog() {
  $useragent = $_SERVER ['HTTP_USER_AGENT'];
  $clientip = $_SERVER ['REMOTE_ADDR'];
  $client_info = get_os ( $useragent ) . "---" . get_broswer ( $useragent );
  $rawdata_position = get_address_by_ip ( $clientip );
  $rawdata_position = json_decode($rawdata_position, true);
  $country = $rawdata_position['data']['country'];
  $province = $rawdata_position['data']['region'];
  $city = $rawdata_position['data']['city'];
  $nettype = $rawdata_position['data']['isp'];

  $time = date ( 'y-m-d h:m:s' );
  $data = "来自{$country} {$province} {$city }{$nettype} 的客户端: {$client_info},IP为:{$clientip},在{$time}时刻访问了{$_SERVER['PHP_SELF']}文件！\r\n";
  $filename = "./log.log";
  if (! file_exists ( $filename )) {
    fopen ( $filename, "w+" );
  }
  file_put_contents ( $filename, $data, FILE_APPEND );
}