Convert a Curl Response String in JSON Array with PHP

Question

I am using Curl to get a request from an REST API. Here my Code:

    #Curl init
    $ch = curl_init('https://192.168.0.1/api/invoke/LicenseRequest');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array(
                                                'Content-Type: application/json',
                                                'Connection: Keep-Alive',
                                                'Accept: application/json'
                                                ));
    curl_setopt($ch, CURLOPT_HEADER, 1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);

#Username und PW
    curl_setopt($ch, CURLOPT_USERPWD, "****:****");
    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);

#Post
    $post = [];
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
    $response = curl_exec($ch);

    curl_close($ch);

When I echo $response this show up (gettype returned string):

HTTP/1.1 200 OK Cache-Control: no-cache,private,no-store,must-revalidate,max-stale=0,post-check=0,pre-check=0 Pragma: no-cache Content-Length: 733 Content-Type: application/json Expires: Wed, 23 May 2018 09:53:48 GMT Server: Microsoft-***** Date: Thu, 24 May 2018 09:53:48 GMT { "error": null, "token": null, "statusVersion": 2, "statusCode": "succeeded", "percentProgress": null, "statusText": null, "result": { "productKey": "************", "productVersion": "10.2.3.12921", "timestamp": "2018-05-24T09:53:48.2029026Z", "machineName": "******", "configuredInstances": 3, "configuredInstanceHosts": 2, "configuredClientAccessServers": 1, "instanceData": [ { "id": "l_container1", "usedLicenseCount": 912 }, { "id": "l_container2", "usedLicenseCount": 7 }, { "id": "l_container3", "usedLicenseCount": 2 } ] }, "logOutput": null }

So far, so good I think. Now I want to parse the "instanceData". I think I have to use the json_decode($response, true); to create an array. So:

$result = json_decode($response, true);
echo $result;

But when I print that per echo, the field is empty. I don't get an error, but the site is blank.

Sorry for my english, I hope you can help me.

Adam O'Dwyer · Accepted Answer · 2019-03-13 21:05:30Z

6

If you set CURLOPT_HEADER as well as CURLOPT_RETURNTRANSFER, then the returned response will contain both the headers and the body in a single string.

If you're only interested in the body, remove the line setting the CURLOPT_HEADER option, and your response will only contain the JSON. You can then use json_decode (as you tried already), and perform whatever processing you need to.

If you are interested in the headers as well, you'll need to separate them from the remainder of the response:

$response = curl_exec($ch);
$info = curl_getinfo($ch);

$response = [
  'headers' => substr($response, 0, $info["header_size"]),
  'body' => substr($response, $info["header_size"]),
];

Now, $response['headers'] will contain the headers (as a string), and $response['body'] will contain the JSON.

edited Mar 13, 2019 at 21:05

Adam O'Dwyer

412 silver badges11 bronze badges

answered May 24, 2018 at 10:14

iainn

17.4k9 gold badges38 silver badges45 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

CNowa Over a year ago

Thank you. I am not interested in the headers. I delete the CURLOPT_HEADER and now the response show up as an array.

Collectives™ on Stack Overflow

Convert a Curl Response String in JSON Array with PHP

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related