WeChat public platform weather forecast function development _ php instance

A school application was started in the previous section, which added various features. Weather forecasts are an essential part. I originally wanted to obtain and process the information directly from the China Weather Network. later I found it too troublesome to handle the problem. I also wanted to obtain the city code of all the cities! Weather outside China is not supported !! (There are many graduates in our school going abroad, so I want to make a version that supports weather outside China)

Therefore, we considered directly calling others' APIs. at the beginning, we chose the interfaces that have been prepared by Fang times studio (but there is no foreign interface ). It wasn't until one day when the weather in Beijing was zero (it was so hot that I could not go out )... Change! Change! Change!

Later, we finally found the most reliable interface-Baidu's Weather API.

To put it bluntly, you need to apply for a dedicated key on the Baidu Map API (it takes about one minute to complete, which is very convenient)
The code is as follows:

// Graphic information 2 for weather [this is a graphic information template] $ tqTpl ="
 
  %s
  
  %s
  
  
   
% S
  
  %s
  5
  
   <! [CDATA [% s]>
   %s
   
   %s
   
   %s
   
  
  
   <! [CDATA [% s]>
   %s
   
   %s
   
   %s
   
  
  
   <! [CDATA [% s]>
   %s
   
   %s
   
   %s
   
  
  
   <! [CDATA [% s]>
   %s
   
   %s
   
   %s
   
  
  
   <! [CDATA [% s]>
   %s
   
   %s
   
   %s
   
  
  
   <! [CDATA [% s]>
   %s
   
   %s
   
   %s
   
  
 "; // You can see up to five items = speechless at last...

PHP code

If (substr_count ($ keyword, 'weather ')! = 0 & $ keyword! = 'Weather ') {$ geshu = substr_count ($ keyword, 'weather'); $ t = explode ("weather", $ keyword); for ($ I = 0; $ I <= $ geshu; $ I ++) {if ($ t [$ I]! = '') {$ City = $ t [$ I]; break ;}}$ mykey =" [change to your API key here] "; $ url =" http://api.map.baidu.com/telematics/v3/weather?location= ". $ City. "& output = json & ak = ". $ mykey; $ output = file_get_contents ($ url); $ contentStr = json_decode ($ output, true); if ($ contentStr ['status'] = 'success ') {$ T [0] ['title'] = $ contentStr ['Date']. "". $ contentStr ['results'] [0] ['currentcity']. "Weather"; // $ T [0] ['picurl'] =" http://zhengwairen-try2.stor.sinaapp.com/xytq.jpg "; // $ T [0] ['URL'] =" http://zhengwairen-try2.stor.sinaapp.com/xytq.jpg "; // The above two rows can be set to the top image you want if (is_array ($ contentStr ['result'] [0] ['index']) {$ T [2] ['title'] = "[pm2.5 ]". $ contentStr ['results'] [0] ['pm25']. "\ n ". "【". $ contentStr ['results'] [0] ['index'] [0] ['title']. "]". "(". $ contentStr ['results'] [0] ['index'] [0] ['zs']. ")". $ contentStr ['results'] [0] ['index'] [0] ['Des ']; // The next row shows the car wash index, I don't think it's a good topic .. // $ T [2] ['title'] = $ T [2] ['title']. "\ n ". "【". $ contentStr ['results'] [0] ['index'] [1] ['title']. "](". $ contentStr ['results'] [0] ['index'] [1] ['zs']. ")". $ contentStr ['results'] [0] ['index'] [1] ['Des ']; $ T [2] ['title'] = $ T [2] ['title']. "\ n ". "【". $ contentStr ['results'] [0] ['index'] [2] ['title']. "](". $ contentStr ['results'] [0] ['index'] [2] ['zs']. ")". $ contentStr ['results'] [0] ['index'] [2] ['Des '];} else $ guowai = 1; for ($ I = 1, $ Aaa = 0; $ I <= 5; $ I ++) {if ($ I = 2 & $ guowai! = 1) continue; if ($ guowai = 1 & $ I = 5) continue; $ T [$ I] ['title'] = $ contentStr ['results'] [0] ['weather _ data'] [$ aaa] ['Date']. "". $ contentStr ['results'] [0] ['weather _ data'] [$ aaa] ['temperature ']. "". $ contentStr ['results'] [0] ['weather _ data'] [$ aaa] ['weather ']. "". $ contentStr ['results'] [0] ['weather _ data'] [$ aaa] ['wind ']; $ T [$ I] ['picurl'] = $ contentStr ['results'] [0] ['weather _ data'] [$ aaa] ['daypictureurl']; $ T [$ I] ['URL'] = $ contentStr ['results'] [0] ['weather _ data'] [$ aaa] ['daypictureurl']; $ aaa ++ ;}$ tianqi = sprintf ($ tqTpl, $ fromUsername, $ toUsername, time (), "news", $ T [0] ['title'], $ T [0] ['description'], $ T [0] ['picurl'], $ T [0] ['URL'], $ T [1] ['title'], $ T [1] ['description'], $ T [1] ['picurl'], $ T [1] ['URL'], $ T [2] ['title'], $ T [2] ['description'], $ T [2] ['picurl'], $ T [2] ['URL'], $ T [3] ['title'], $ T [3] ['description'], $ T [3] ['picurl'], $ T [3] ['URL'], $ T [4] ['title'], $ T [4] ['description'], $ T [4] ['picurl'], $ T [4] ['URL'], $ T [5] ['title'], $ T [5] ['description'], $ T [5] ['picurl'], $ T [5] ['URL']); echo $ tianqi ;}}

As follows:

Change the $ mykey variable to your own APIkey. What makes me puzzled is that the image and text templates I use are obviously 6 items. why are there only 5 items actually replied?

The code description is provided. Users can send "Beijing weather" and "Beijing weather", so they first perform string processing to get the correct city name. Use the URL provided by Baidu Map API to send a GET request (which is actually a direct access) to obtain a json data packet. Convert the data packet information into an array format and reply to the user. There is no specific description of the weather in foreign countries, so I made some minor changes.