TLS Low Level Testing. You should expect to see it print TLS version 1.2.

test.php

<?php

// This example is for testing php with libcurl

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, "https://www.howsmyssl.com/a/check");
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, TRUE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);

$response = curl_exec($ch);
curl_close($ch);
list($header, $body) = explode("\r\n\r\n", $response, 2);
$data = json_decode($body, true);

print "TLS Version Negotiated: " . $data['tls_version'] . "\n";

test.py

import httplib
import json

conn = httplib.HTTPSConnection('www.howsmyssl.com')
conn.request('GET', '/a/check')

data = json.load(conn.getresponse())

print "TLS Version Negotiated: %s" % data['tls_version']

test.rb

require 'net/https'
require 'json'

uri = URI("https://www.howsmyssl.com/")
http = ::Net::HTTP.new uri.host, uri.port
http.use_ssl = true

data = JSON.parse(http.get('/a/check').body)

puts "TLS Version Negotiated: #{data['tls_version']}"