$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => "https://api-pix-h.gerencianet.com.br/oauth/token",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 0,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS =>"{\r\n \"grant_type\": \"client_credentials\"\r\n}",
CURLOPT_HTTPHEADER => array(
"x-client-cert-pem: {{X-Certificate-Pem}}",
"Authorization: Basic Q3334f34f34f3g5355gh56hg5w6h457wg457w54w56h7w56f5f6wNzVmZGQxNGU2MDMxMjlhNTMw",
"Content-Type: application/json"
),
));
$response = curl_exec($curl);
curl_close($curl);
echo $response;