How to parse ONLY the JSON value returned by CURL in PHP?

Question

I am able to successfully make a send POST values through CURL but I can't seem to figure out how to get the only the JSON code it returns.

Here is a part of my code:

try {
    $curl = curl_init($url);

    if (FALSE === $curl)
        throw new Exception('failed to initialize');

    curl_setopt($curl, CURLOPT_HEADER, 1);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl, CURLOPT_HTTPHEADER,
        array("Content-type: application/json")
    );          
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "POST");   
    curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($data));

    $message = curl_exec($curl);

    if (FALSE === $message)
        throw new Exception(curl_error($curl), curl_errno($curl));

    $response = curl_getinfo($curl, CURLINFO_HTTP_CODE);
    $error = $message;

    var_dump($error);
    curl_close($curl);

} catch(Exception $e) {
    trigger_error(
        sprintf(
            'Curl failed with error #%d: %s',
            $e->getCode(), $e->getMessage()
        ),
        E_USER_ERROR
    );
}

I am able to get the correct value for the $response variable but the returned message gives me:

string(253) "HTTP/1.1 400 Bad Request Cache-Control: no-cache Pragma: no-cache Content-Type: application/json; charset=utf-8 Expires: -1 Server: Microsoft-IIS/8.5 Date: Sun, 02 Jul 2017 17:47:34 GMT Content-Length: 38 {"Message":"Email is already in used"}"

when I try to use var_dump. What I am aiming to store for me error message variable it the value for Message that is in {"Message":"Email is already in used"}

Any tips?

Thanks so much!

Have you tried to json encode after the cURL has been executed? — Tom
– Tom, Commented Jul 2, 2017 at 18:04
"400 Bad Request" suggests to me that the server is not processing your request because of a client error. Does the endpoint definitely accept POST requests? Does the $data variable contain all required fields? — Freid001
– Freid001, Commented Jul 2, 2017 at 18:04

Tom Udding · Accepted Answer · 2017-07-02 18:05:05Z

3

HTTP/1.1 400 Bad Request Cache-Control: no-cache Pragma: no-cache Content-Type: application/json; charset=utf-8 Expires: -1 Server: Microsoft-IIS/8.5 Date: Sun, 02 Jul 2017 17:47:34 GMT Content-Length: 38

Are the headers returned by the cURL request.
You'll have to set CURLOPT_HEADER to FALSE (0) to remove the headers from the output:

curl_setopt($curl, CURLOPT_HEADER, 0);

As stated by the documentation when CURLOPT_HEADER is TRUE headers will be included in the output.

answered Jul 2, 2017 at 18:05

Tom Udding

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1 Comment

Atasha Over a year ago

Ahhhh this is such a small detail I missed. Thanks a lot!

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