PHP gets the weather based on the interface

Find a popular common weather interface from the Internet:
Shanghai: "Http://www.weather.com.cn/adat/cityinfo/101020100.html"
Returns the JSON substring:

{"Weatherinfo": {"City": "Shanghai", "city_en": "Shanghai", "date_y": "March 4, 2014", "date": "", "Week": "Tuesday", "Fchh": "11", " Cityid ":" 101020100 "," Temp1 ":" 11c~6c "," Temp2 ":" 10c~5c "," Temp3 ":" 8c~4c "," Temp4 ":" 8c~6c "," TEMP5 ":" 8c~6c "," TEMP6 ": "10c~5c", "tempF1": "51.8f~42.8f", "tempF2": "50f~41f", "tempF3": "46.4f~39.2f", "tempF4": "46.4f~42.8f", "tempF5": " 46.4f~42.8f "," tempF6 ":" 50f~41f "," Weather1 ":" Light rain Turns Cloudy "," Weather2 ":" Cloudy "," Weather3 ":" Drizzle "," weather4 ":" Drizzle "," weather5 ":" Drizzle Turn yin "," weather6 ":" Cloudy "," IMG1 ":" 7 "," Img2 ":" 1 "," IMG3 ":" 1 "," IMG4 ":" 2 "," Img5 ":" 7 "," Img6 ":" The "," Img7 ":" 7 "," Img8 ": "Img9": "7", "Img10": "2", "Img11": "1", "Img12": "", "Img_single": "7", "Img_title1": "Drizzle", "img_title2": "Cloudy", "img _title3 ":" Cloudy "," img_title4 ":" Yin "," img_title5 ":" Drizzle "," img_title6 ":" Drizzle "," img_title7 ":" Drizzle "," img_title8 ":" Drizzle "," img_ Title9 ":" Light Rain "," Img_title10 ":" Yin "," img_title11 ":" Cloudy "," img_title12 ":" Cloudy "," img_title_single ":" Drizzle "," wind1 ":" Northeast 3-4 to North Wind 4-5 "," Wind2 ":" North wind 4-5 turn northeast 3-4 level "," Wind3 ":" Dongfeng 4-5 Class "," Wind4 ":" Dongfeng to the northeast of 4-5 "," Wind5 ":" Northeast of 3-4 "," Wind6 ":" Northeast Wind 3-4 "," fx1 ":" Northeast "," FX2 ":"North Wind "," FL1 ":" 3-4 level to 4-5 levels "," FL2 ":" 4-5 level to 3-4 level "," FL3 ":" 4-5 Level "," Fl4 ":" 4-5 "," FL5 ":" 3-4 "," fl6 ":" 3-4 "," index ":" Cooler "," Index_d ":" suggest a thick coat and sweater and other clothing. The frail and infirm are advised to coat, coat and cardigan. "," index48 ":" Colder "," index48_d ":" suggest a thick coat and sweater and other clothing. " The frail and infirm are advised to coat, coat and cardigan. "Index_uv": "Weakest", "INDEX48_UV": "Weakest", "index_xc": "Unsuitable", "index_tr": "Fit", "Index_co": "More Comfortable", "st1": "Ten", "St2": "3", "ST3 ":" 9 "," St4 ":" 2 "," ST5 ":" 7 "," St6 ":" 2 "," INDEX_CL ":" Inappropriate "," Index_ls ":" Not Appropriate "," Index_ag ":" Easy Hair "}}

The content format is correct, the information is more complete, but there is no date to obtain the way.
Problem:
① How to get weather information for the day and 7 days in Shanghai?
Or
② can use regular to match the information of Chinese weather net?
Url:http://www.weather.com.cn/weather/101020100.shtml

 
 

  
  

  
Today
3rd
   
Rain
 
 - C 
 - C 
Breeze 
  
  
  

  
Tomorrow
4th
Rain
 at C
 the C
Breeze
  
  

  
Acquired
5th
Thunder storm
 + C
 - C
Breeze
  
  

  
Monday
6th
Moderate rain turn to drizzle
 the C
Ten C
Level 3-4
  
  

  
Tuesday
7th
Moderate Rain
 - C
8 C
Level 3-4
  
  

  
Wednesday
8th
Moderate rain turn to drizzle
 - C
9 C
Breeze
  
  

  
Thursday
9th
Yin
 - C
9 C
Breeze
 
 

 

It's OK to match the contents of my comments, but this method is a bit cumbersome and inefficient.
Help...

Reply to discussion (solution)

A real-time interface was found:
http://weatherapi.market.xiaomi.com/wtr-v2/weather?cityId=101020100

