Unable to fetch single data from JSON Curl Output in PHP [duplicate] - php

Question

This question already has answers here:
How to extract and access data from JSON with PHP?
(1 answer)
How to use cURL to get jSON data and decode the data?
(6 answers)
Closed 10 months ago.
I have a code which should fetch courseID from JSON response obtained , But currently it is not fetching anything . It shows me the entire response and not one . can someone help me with this .
JSON response obtained.
{
"results": [
{
"CourseID": "ASPO",
"Success": "Yes"
}
]
}
i just want to retrieve the CourseID.
and below is my code
<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://AbC:3939');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, "ABC=AE");
$headers = array();
$headers[] = 'Content-Type: application/x-www-form-urlencoded';
$headers[] = 'Authorization: Bearer hjhjhjhjhjhj338sj';
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$result = curl_exec($ch);
if (curl_errno($ch)) {
echo 'Error:' . curl_error($ch) ;
}else{
$result_value = json_decode($result);
print_r($result_value->results[0]->CourseID);
}
curl_close($ch);
?>

Answer 1

I have tried this with your shared result and got the COURSEID.
$resp = '{
"results": [
{
"CourseID": "ASPO",
"Success": "Yes"
}
]
}';
$res = json_decode($resp);
print_r($res->results[0]->CourseID);

Answer 2

Note: this answers the original question (extract information from JSON response).
The top level element in your JSON string is an object with a single results key that holds everything. You aren't referencing such key anywhere in your code.
The name of the local PHP variable where you store the results is irrelevant, there isn't any automatic behaviour linked to that.
If you use json_decode() with the $associative flag you get JSON objects converted to PHP arrays (JSON arrays become PHP arrays no matter the flags). If unsure, just inspect your data with either a step debugger or e.g. var_dump($result_value):
array(1) {
'results' =>
array(1) {
[0] =>
array(2) {
'CourseID' =>
string(4) "ASPO"
'Success' =>
string(3) "Yes"
}
}
}
In php you can access array elements by specifying the key inside square brackets so:
var_dump($result_value['results'][0]['CourseID'], $result_value['results'][0]['Success']);
string(4) "ASPO"
string(3) "Yes"