php读取google地图经纬度-PHP源码

参考了网上部分资料，自己改写了一个方便的获取经纬度信息的类Geo，其中Latitude和Longtitude分别是纬度和经度。其中最重要的构造函数就是传入地名，通过Webrequest从Google Map获得经纬度值，在含有地理位置信息的项目里可以很方便的调用，即Geo g = new Geo("北京师范大学");然后g.Latitude和g.Longtitude就是北京师范大学的纬度和经度了，它们分别是39.9614580，116.3692820。Geo的实现如下：

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.IO;

namespace YourNameSpace
{
///

/// a class for latitude and longtitude
///

[Serializable]
public class Geo
{
///

/// latitude
///

private string _latitude = "";

///

/// longtitude
///

private string _lOngtitude= "";

///

/// default constructor
///

public Geo()
{

}

///

/// construct geo given latitude and longtitude
///

///
///
public Geo(string latitude, string longtitude)
{
_latitude = latitude;
_lOngtitude= longtitude;
}

///

/// construct geo given name of a place
///

///
public Geo(string location)
{
string output = "csv";
string url = string.Format("http://maps.google.com/maps/geo?q={0}&output={1}", location, output);
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
HttpWebResponse respOnse= (HttpWebResponse)request.GetResponse();
using (StreamReader sr = new StreamReader(response.GetResponseStream()))
{
string[] tmpArray = sr.ReadToEnd().Split(',');
_latitude = tmpArray[2];
_lOngtitude= tmpArray[3];
}
}

///

/// get latitude(纬度)
///

public string Latitude
{
get { return _latitude; }
set { _latitude = value; }
}

///

/// get longtitude(经度)
///

public string Longtitude
{
get { return _longtitude; }
set { _lOngtitude= value; }
}
}