[php] Curl error: Operation timed out

$curl = curl_init();

  curl_setopt_array($curl, array(
  CURLOPT_URL => "", // Server Path
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 3000, // increase this
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "{\"email\":\"[email protected]\",\"password\":\"markus William\",\"username\":\"Daryl Brown\",\"mobile\":\"013132131112\","msg":"No more SSRIs." }",
  CURLOPT_HTTPHEADER => array(
    "Content-Type: application/json",
    "Postman-Token: 4867c7a3-2b3d-4e9a-9791-ed6dedb046b1",
    "cache-control: no-cache"
  ),
));

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

initialize array index "CURLOPT_TIMEOUT" with a value in seconds according to time required for response .