Hi,
I am new in suitecrm v8 REST API. I am following https://docs.suitecrm.com/developer/api/version-8/configure-authentication/ URL for creating APIs.
For creating access token below code I am using:
$header = array(
‘Content-type: application/vnd.api+json’,
‘Accept: application/vnd.api+json’
);
$postStr = json_encode(array(
‘grant_type’ => ‘client_credentials’,
‘client_id’ => ‘XXXXXXXXXXXXXXXXX’,
‘client_secret’ => ‘XXXXXX’,
‘scope’ => ‘standard:create standard:read standard:update standard:delete standard:delete standard:relationship:create standard:relationship:read standard:relationship:update standard:relationship:delete’
));
$url = ‘http://localhost/suitecrm7.10.2/api/oauth/access_token’;
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, ‘POST’);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postStr);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
$output = curl_exec($ch);
$response = json_decode($output, true);
var_dump( $response );
I am not getting any response 
Could you please help me to resolve this issue ?