Python return json to PHP and use json_decode

Thank you all for comments! According to that, I kind figure out solution.

Python script

data = {}
for result in results:
    if 'stackoverflow.com' in result['serp_url']:
        data['url'] = result['serp_url']
        data['rank'] = result['serp_rank']
        data['query'] = result['query']
        print(json.dumps(data))
        exit

PHP script

exec("python3 py.py", $output);

$test = [];

foreach($output as $key => $out) {
    $test[$key] = json_decode($out, true);
    print_r("Rank: " . $test[$key]['rank'] ." - ". $test[$key]['url']."<br>");
}

Output

Rank: 1 - https://stackoverflow.com/
Rank: 36 - https://www.quantcast.com/stackoverflow.com

You don't even have to even use Json package of Python. Here is little tweek. In Python and PHP code.

# Your py.py Looks Below: 
data = {}
data["aa"] = 100
# You can create any Valid Dictionary
print data

and Your Php File will have this code

<?php
    $test = shell_exec("python py.py");
    echo json_decode(json_encode($test));
    // $test itself is a json String you even dont need encode/decode
?>

And The Result in my Terminal got {'aa': 100} Which is Expected and you want.

Now Important Point is that shell_exec command will give you the string which is converted from Dictionary and fortunately, That string itself is a JSON, That why json_decode is returning NULL.

Above both Snippet works fine. Check them.

Python file:

import json
import base64

j_data = {
"name": "wick",
"age": 24,
}

jso_en = json.dumps(j_data , indent=4)
#encode with base64
res_arr_bytes = jso_en.encode("ascii")  
base64_bytes = base64.b64encode(res_arr_bytes)
base64_enc = base64_bytes.decode("ascii")
print(base64_enc)

PHP file:

$command = escapeshellcmd("python3 test.py");
$json_out = shell_exec($command);
$json_data = json_decode(base64_decode($json_out), true);
echo $json_data['name'];

output from php:

wick

The json you're generating is not valid (free objects outside of an array and strings between single quotes).

In your python code you should append your data objects to an array as you're creating them. Here's a rough attempt at solving your issue

import json

data = [] # use a list to keep your objects

for result in results:
    if 'stackoverflow.com' in result['serp_url']:
        record = {}
        record['url'] = result['serp_url']
        record['rank'] = result['serp_rank']
        record['query'] = result['query']
        data.append(record)
        # exit # <-- this doesn't seem correct, TBH
json.dumps(data)