PHP: Adding tracks to spotify playlist with web-api - JSON ERROR

Question

I am trying to add a track to my own playlist with a little php script, but it won't work.

I always get the errror:

{ "error" : { "status" : 400, "message" : "Error parsing JSON." } }

This is the spotify document for adding tracks: https://developer.spotify.com/web-api/add-tracks-to-playlist/

Has anybody an idea what the problem could be?

$token='my Access token';

$headers = array(
    "Accept: application/json",
    "Authorization: Bearer " . $token
);

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api.spotify.com/v1/users/*myusername*/playlists/*myplaylistID*/tracks' );
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 );
curl_setopt($ch, CURLOPT_POST, 1 );
curl_setopt($ch, CURLOPT_POSTFIELDS, 'uris=spotify:track:3DXncPQOG4VBw3QHh3S817' );
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$result=curl_exec($ch);

print "$result";

$result = json_decode($result, true);
curl_close($ch);

From a 2 minute read of the manual curl_setopt($ch, CURLOPT_POSTFIELDS, '{"uris":"spotify:track:3DXncPQOG4VBw3QHh3S817"}' ); — RiggsFolly
– RiggsFolly, Commented Dec 25, 2017 at 20:40
Yeah, I saw this, but I a am new to json, what must I change in my code? — Roland Beck
– Roland Beck, Commented Dec 25, 2017 at 20:41

Roland Beck · Accepted Answer · 2017-12-25 21:03:59Z

1

I solved it finally:

$key='***AccessKey***';

$url = 'https://api.spotify.com/v1/users/USERID/playlists/playlistID/tracks?uris=spotify%3Atrack%3A3DXncPQOG4VBw3QHh3S817';

$headers = array(
        "Content-Length: 0",
        "Accept-Encoding: gzip, deflate, compress",
        "User-Agent: runscope/0.1",
        "Content-Type: application/json",
        "Authorization: Bearer ".$key);


    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $response = json_decode(curl_exec($ch), true);
    curl_close($ch);
    print_r($response);

answered Dec 25, 2017 at 21:03

Roland Beck

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Tommaso Belluzzo · Accepted Answer · 2017-12-25 20:47:45Z

0

Try this:

$data = array('uris' => 'spotify:track:3DXncPQOG4VBw3QHh3S817');
$data_json = json_encode($data);

// ...

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api.spotify.com/...');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data_json);
curl_setopt($ch, CURLOPT_HTTPHEADER, array
(                                                                          
    'Content-Type: application/json',                                                                                
    'Content-Length: '.strlen($data_json),
    'Authorization: Bearer '.$token
));  

$result = curl_exec($ch);

// ...

answered Dec 25, 2017 at 20:47

Tommaso Belluzzo

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