<?
//$url = 'https://tyt.lt/iot/i.php';
$url = 'https://iot.thermofisher.lt/i.php';

$data = ['id' => 'BA222',
  'G' => '333.27',
  'T' => '188.17',
  'N' => '215.3',
  'U' => 'g',
];

//id=BA222&G=303.27&T=188.17&N=115.3&U=g

$options = [
  'http' => [
    'header' => "Content-type: application/x-www-form-urlencoded",
    'method' => 'POST',
    'content' => http_build_query($data),
  ],
];

$context = stream_context_create($options);
$result = file_get_contents($url, false, $context);
if ($result === false) {
  /* Handle error */
	echo "\nERROR_POST\n";
}

echo "\nResult:\n-----------------------\n";
#var_dump($result);
print_r($result);
echo "\n\n";