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Google Map API 结合PHP实现登录map定位

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Release： 2016-06-13 13:06:08
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Google Map API 结合PHP实现登录地图定位

Google Map API 结合PHP实现登录定位主要思想是在用户登录系统时记录下IP地址，在通过相关的地址索引由IP转换到物理地址，最后通过Google Map API将取得的物理地址标示在Google地图上。

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php平台由ThinkPHP框架搭建。具体流程图如下：


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这里用到了CoralWry这个数据文件，网上有的下载的，以前的彩虹QQ什么的都是用这个文件解析的，不过可能有时候需要更新IP的缘故会对此文件进行更新，下面有下载包。这个文件放在根目录下

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继续，在TP中引入一下两个文件作为外链调用库，可以直接放入TP核心文件夹的Lib下的ORG扩展库中

IpLocation类，这个扩展类是从DAT文件中将IP提取地址所用

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class IpLocation {
var $fp;
var $firstip;  //第一条ip索引的偏移地址
var $lastip;   //最后一条ip索引的偏移地址
var $totalip;  //总ip数
//*
//构造函数,初始化一些变量
//$datfile 的值为纯真IP数据库的名子,可自行修改.
//*
function ipLocation($datfile = "CoralWry.Dat"){
  $this->fp=fopen($datfile,'rb')or die("CoralWry.Dat不存在，请去网上下载纯真IP数据库, 'CoralWry.dat' 放到当前目录下");   //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,"closefp"));  //为了兼容php5以下版本,本类没有用析构函数,自动关闭ip库.
}
//*
//关闭ip库
//*
function closefp(){
fclose($this->fp);
}
//*
//读取4个字节并将解压成long的长模式
//*
function get4b(){
  $str=unpack("V",fread($this->fp,4));
  return $str[1];
}
//*
//读取重定向了的偏移地址
//*
function getoffset(){
  $str=unpack("V",fread($this->fp,3).chr(0));
  return $str[1];
}
//*
//读取ip的详细地址信息
//*
function getstr(){
	$str="";
  $split=fread($this->fp,1);
  while (ord($split)!=0) {
    $str .=$split;
	$split=fread($this->fp,1);
  }
  return $str;
}
//*
//将ip通过ip2long转成ipv4的互联网地址,再将他压缩成big-endian字节序
//用来和索引区内的ip地址做比较
//*
function iptoint($ip){
  return pack("N",intval(ip2long($ip)));
}
//*
//获取客户端ip地址
//注意:如果你想要把ip记录到服务器上,请在写库时先检查一下ip的数据是否安全.
//*
function getIP() {
        if (getenv('HTTP_CLIENT_IP')) {
				$ip = getenv('HTTP_CLIENT_IP'); 
		}
		elseif (getenv('HTTP_X_FORWARDED_FOR')) { //获取客户端用代理服务器访问时的真实ip 地址
				$ip = getenv('HTTP_X_FORWARDED_FOR');
		}
		elseif (getenv('HTTP_X_FORWARDED')) { 
				$ip = getenv('HTTP_X_FORWARDED');
		}
		elseif (getenv('HTTP_FORWARDED_FOR')) {
				$ip = getenv('HTTP_FORWARDED_FOR'); 
		}
		elseif (getenv('HTTP_FORWARDED')) {
				$ip = getenv('HTTP_FORWARDED');
		}
		else { 
				$ip = $_SERVER['REMOTE_ADDR'];
		}
		return $ip;
}
//*
//获取地址信息
//*
function readaddress(){
  $now_offset=ftell($this->fp); //得到当前的指针位址
  $flag=$this->getflag();
  switch (ord($flag)){
         case 0:
		     $address="";
		 break;
		 case 1:
		 case 2:
		     fseek($this->fp,$this->getoffset());
			 $address=$this->getstr();
		 break;
		 default:
		     fseek($this->fp,$now_offset);
		     $address=$this->getstr();
		 break;
  }
  return $address;
}
//*
//获取标志1或2
//用来确定地址是否重定向了.
//*
function getflag(){
  return fread($this->fp,1);
}
//*
//用二分查找法在索引区内搜索ip
//*
function searchip($ip){
  $ip=gethostbyname($ip);     //将域名转成ip
  $ip_offset["ip"]=$ip;
  $ip=$this->iptoint($ip);    //将ip转换成长整型
  $firstip=0;                 //搜索的上边界
  $lastip=$this->totalip;     //搜索的下边界
  $ipoffset=$this->lastip;    //初始化为最后一条ip地址的偏移地址
  while ($firstip fp,$this->firstip + $i * 7);    //定位指针到中间记录
	$startip=strrev(fread($this->fp,4));         //读取当前索引区内的开始ip地址,并将其little-endian的字节序转换成big-endian的字节序
	if ($ip fp,$this->getoffset());
	   $endip=strrev(fread($this->fp,4));
	   if ($ip > $endip){
	      $firstip=$i + 1;
	   }
	   else {
	      $ip_offset["offset"]=$this->firstip + $i * 7;
	      break;
	   }
	}
  }
  return $ip_offset;
}
//*
//获取ip地址详细信息
//*
function getaddress($ip){
  $ip_offset=$this->searchip($ip);  //获取ip 在索引区内的绝对编移地址
  $ipoffset=$ip_offset["offset"];
  $address["ip"]=$ip_offset["ip"];
  fseek($this->fp,$ipoffset);      //定位到索引区
  $address["startip"]=long2ip($this->get4b()); //索引区内的开始ip 地址
  $address_offset=$this->getoffset();            //获取索引区内ip在ip记录区内的偏移地址
  fseek($this->fp,$address_offset);            //定位到记录区内
  $address["endip"]=long2ip($this->get4b());   //记录区内的结束ip 地址
  $flag=$this->getflag();                      //读取标志字节
  switch (ord($flag)) {
         case 1:  //地区1地区2都重定向
		 $address_offset=$this->getoffset();   //读取重定向地址
		 fseek($this->fp,$address_offset);     //定位指针到重定向的地址
		 $flag=$this->getflag();               //读取标志字节
		 switch (ord($flag)) {
		        case 2:  //地区1又一次重定向,
				fseek($this->fp,$this->getoffset());
				$address["area1"]=$this->getstr();
				fseek($this->fp,$address_offset+4);      //跳4个字节
				$address["area2"]=$this->readaddress();  //地区2有可能重定向,有可能没有
				break;
				default: //地区1,地区2都没有重定向
				fseek($this->fp,$address_offset);        //定位指针到重定向的地址
				$address["area1"]=$this->getstr();
				$address["area2"]=$this->readaddress();
				break;
		 }
		 break;
		 case 2: //地区1重定向 地区2没有重定向
		 $address1_offset=$this->getoffset();   //读取重定向地址
		 fseek($this->fp,$address1_offset);  
		 $address["area1"]=$this->getstr();
		 fseek($this->fp,$address_offset+8);
		 $address["area2"]=$this->readaddress();
		 break;
		 default: //地区1地区2都没有重定向
		 fseek($this->fp,$address_offset+4);
		 $address["area1"]=$this->getstr();
		 $address["area2"]=$this->readaddress();
		 break;
  }
  //*过滤一些无用数据
  if (strpos($address["area1"],"CZ88.NET")!=false){
      $address["area1"]="未知";
  }
  if (strpos($address["area2"],"CZ88.NET")!=false){
      $address["area2"]=" ";
  }
  return $address;
 }

}
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mapService类，方法类

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/**
 * Google Map Service
 * 2011.4.8
 */
import("ORG.IPA.IpLocation");
class mapService{
	
	public static function getIPaddress($ip){
		
	//返回格式
	$format = "text";//默认text,json,xml,js
	//返回编码
	$charset = "utf8"; //默认utf-8,gbk或gb2312
	$ip_l=new IpLocation();
	$address=$ip_l->getaddress($ip);
	$address["area1"] = iconv('GB2312','utf-8',$address["area1"]);
	$address["area2"] = iconv('GB2312','utf-8',$address["area2"]);
	$add=$address["area1"].$address["area2"];
	if($add=="本机地址 "){
		$add="杭州";
	}
	
	return  $add;
	}
}
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然后就可以在登陆的Action接口函数中调用两个文件类了:

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	import("ORG.IPA.MapService");
        $ipaddress = get_client_ip();

	$adrInfo=MapService::getIPaddress($ipaddress);
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接下去就可以将上述信息记录到数据库中了，而在用户进入地图页面便可以将数据从数据库导出，并发送到view层进行显示，并在前端层调用Google Map API

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后台控制层代码很简单：

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	public function map(){
		
		parent::islogin();
		$model = D("Topicview");
		
        $list =  $model->field('id,tid,imgid,avatar,address,create_time,topic_from,content,nickname,rootid,homepage')
        	->where("Topic.status=1 and Topic.type='first'")
        	->order("id desc")
			->find();

		//dump($list);
		$this->assign('addrList',$list);
		parent::showSiteInfo("Lab前端实验室 - Map Position");
        $this->display();
        
	}
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接下来是前台模板层js代码：

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if (typeof flowg == "undefined" || !flowg) {
    var flowg = {};
}
flowg.initMap = (function(){

	var htmlString = '<div style="overflow: auto;">' +
    '<div style="width:300px;overflow:hidden;" class="map-item">' +
    '<div class="map-left">' +
    '<img src="%7B:getUserAvatar(%24addrList%5B" avatar alt="{$addrList.nickname}"   style="max-width:90%">' +
    '</div>
<div class="map-right">' +
    '<div class="map-content">{$addrList.nickname} ： {$addrList.content}</div>' +
	'<div class="time">他在{$addrList.address}</div>' +
    '</div>' +
    '</div>';
    var geocoder;
    var map;
    var oldinfo = null;
    function initialize(){
        geocoder = new google.maps.Geocoder();
        var latlng = new google.maps.LatLng(34.016, 103.535);
        var myOptions = {
            zoom: 8,
            center: latlng,
            mapTypeId: google.maps.MapTypeId.ROADMAP
        };
        map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
        codeAddress("{$addrList.address}", htmlString);
    }
    
    function codeAddress(address, html){
        geocoder.geocode({
            'address': address
        }, function(results, status){
            if (status == google.maps.GeocoderStatus.OK) {
                map.setCenter(results[0].geometry.location);
                var marker = new google.maps.Marker({
                    map: map,
                    position: results[0].geometry.location
                });
                var contentString = html;
                var infowindow = new google.maps.InfoWindow({
                    content: contentString
                });
                infowindow.open(map, marker);
                if (oldinfo != null) {
                    oldinfo.close();
                }
                oldinfo = infowindow;
            }
            else {
                return false;
            }
        });
    }

    return initialize;
	
})();

$(flowg.initMap);
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<p>?</p>
<p>上面直接调用了google map的marker功能对于信息进行展示，效果图：</p>
<p>?</p>
<p><br><img alt="" src="http://www.daimami.com/img/2014/01/01/1332391838.png"></p>
 <div class="clear">
                 
              
              
        
            </div>
</div>
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