Можно ли поставить сессию через POST?

session_start();

if (!isset($_SESSION['counter'])) {
	$_SESSION['counter'] = 0;
}

if ($_SESSION['counter'] > '30') { ####
	print 'limit';
	exit;
}

print ++$_SESSION['counter'];

$url = 'site.com';
		$ch = curl_init($url);
		curl_setopt($ch, CURLOPT_URL, $url);
		curl_setopt($ch, CURLOPT_HEADER, false);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($ch, CURLOPT_POST, true);
		$response = curl_exec($ch);
		curl_close($ch);
		print_r($response);