PHP Ajax JavaScript Json implements method of obtaining weather information

This article mainly introduces the relevant information on how to obtain weather information using PHP Ajax JavaScript Json. Interested friends can refer to it

To add a weather forecast function to your website, it is a It is a very common requirement, and it is not difficult to implement it. Today I will introduce a few simple methods.

Use third-party services

There is such a simple way, with the help ofhttp://www.tianqi.com/plugin/Online weather service, you can Customize our display shape to add the function of weather forecast.

A simple example is given below:

Copy code The code is as follows:

INDIRECT METHOD

It is said that weather information is obtained indirectly, because for us personally, it is impossible to launch satellites by ourselves, or maintain a service with such a large amount of calculation as weather forecasting. of. We do this with the help of data interfaces provided by other websites.

Ideas

Since the characteristics of Ajax itself determine that it cannot make cross-domain requests, we need to use PHP to try the proxy function. The specific idea is as follows:

The client opens our webpage and obtains the client IP according to PHP. Use a third-party service to obtain the city code corresponding to the IP and call the weather interface. According to the city code Get weather information The client gets the data returned by the server and displays it on the page.

Services used

The following is a list of common interfaces we use
•IP to city: "http://ip.taobao. com/service/getIpInfo.php?ip=XXX”
•View the code of the corresponding city: http://blog.csdn.net/anbowing/article/details/21936293
•Access the weather interface to obtain data :"http://www.weather.com.cn/adat/sk/".$city_id."html"

The following are several good interface websites.
•Weather API interface collection

Implementation code

The implementation of the code is divided into three steps. Just write it according to our previous logic.
•Get the city corresponding to the client ip

>城市----->>>城市代码----->>>> 天气信息
// 获取ip对应的城市信息，以及编码 http://ip.taobao.com/service.getIpInfo.php?ip=60.205.8.179
// 通过编码获得天气信息 http://www.weather.com.cn/adat/sk/编码.html
$client_ip = "60.205.8.179";//$_SERVER['REMOTE_ADDR'];
$url = "http://ip.taobao.com/service/getIpInfo.php?ip="."$client_ip";
$result = file_get_contents($url);
echo $result;


/////////////////////////////////////思路二


?>

On the client we can see

•Request the city code from the server and pass it to the weather interface.

Complete front-end code

获取城市代码
获取城市代码








点击按钮获取天气信息
获取

城市名称

城市代码

当前温度

风向

风速

湿度

更新时间

##Summary

It is actually not difficult to add a weather forecast function to your website. Maybe there is a simpler way, and this is just a process of starting something new.

The above is the entire content of this article, I hope it will be helpful to everyone's study.

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