How to make two curl calls in same script - php

Question

I am making API call to third party via curl php.
the code is working but since I am making two POST and GET one after another I have to refresh the page to get response for GET call
I tried using ajax and it is throwing me CORS errors
function callAPI($method, $url, $data){
global $company_api_key;
switch ($method){
case "POST":
$curl = curl_init();
curl_setopt($curl, CURLOPT_POST, 1);
if ($data)
curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_HTTPHEADER, array(
'Authorization: Basic '.base64_encode("$company_api_key") ,
'Content-Type: application/json',
));
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
// EXECUTE:
$result = curl_exec($curl);
if(!$result){die("Connection Failure");}
curl_close($curl);
return $result;
break;
case "GET":
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Authorization: Basic '.base64_encode("$company_api_key") ,
'Content-Type: application/json',
));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
// EXECUTE:
$result = curl_exec($ch);
if(!$result){die("Connection Failure");}
curl_close($ch);
return $result;
break;
default:
echo "something went wrong with API call";
}
}
$make_call = callAPI('POST', 'post-url', json_encode($data_array));
I get an ID after this call and then I use that id in GET call
$get_data = callAPI('GET', 'get-url'.$id, false);
now I am calling them one after another so I tried using AJAX for GET call but I am getting CORS error.