// Token request
$data = array(
    'client_id' => $client_id,
    'client_secret' => $client_secret,
    'grant_type' => 'authorization_code',
    'code' => $code,
);
$h = curl_init($oidc_token_endpoint);
curl_setopt($h, CURLOPT_RETURNTRANSFER, true);
curl_setopt($h, CURLOPT_TIMEOUT, 10);
curl_setopt($h, CURLOPT_POST, true);
curl_setopt($h, CURLOPT_HTTPHEADER, array('Content-Type: application/x-www-form-urlencoded'));
curl_setopt($h, CURLOPT_POSTFIELDS, http_build_query($data));
//curl_setopt($h, CURLOPT_SSL_VERIFYPEER, false);

$res1 = curl_exec($h);
$errorc1 = curl_error($h);
curl_close($h);