Python request.post to php server

Question

Different variants of this question litter google, but I am not finding a solution specific to my needs. I am trying to send a JSON string from a client running python to a web server that is using PHP. The JSON string contains the results from a select query.

I have found lots of examples and tutorials on how to generate the JSON in python and how to publish data from the server database to a user via the server's page.

What I am not finding is how to actually transfer the JSON from the Python script to the PHP script. I am using the Arduino YUN with Linino, and have tried a request.post() but get a "module not found" error.

A plain english explanation of how the data hand off should take place between the two devices would help greatly! Any suggestions on a good resource that actually shows an example of what I have described would be great too.

Python (Post):

#!/usr/bin/python

import requests
import json

url = 'http://xxx.xxx.x.xxx/reciever.php'
payload = {"device":"gabriel","data_type":"data","zone":1,"sample":4,"count":0,"time_stamp":"00:00"}
headers = {'content-type': 'application/json'}

response = requests.post(url, data=json.dumps(payload), headers=headers)

PHP (Receiver):

<?php

print_r(json_decode($_POST['payload']));

?>

Maybe there is a totally different way that is better for posting a select query from a client to a server? Client will have dynamic IP's and the server will be web based.

Answer 1

Library requests isn't installed in Python by default. You need to get it first via pip or another package manager:

pip install requests

After that, you can use it.

There is also library, that is built in: urllib2 . Example:

import urllib
import urllib2

url = 'http://xxx.xxx.x.xxx/reciever.php'
payload = {"device":"gabriel","data_type":"data","zone":1,"sample":4,"count":0,"time_stamp":"00:00"}
headers = {'content-type': 'application/json'}    
data = urllib.urlencode(payload)
req = urllib2.Request(url, data, headers)
response = urllib2.urlopen(req)
the_page = response.read()