A small snippet to find the latest stable release of Symfony 2

s2version.php

<?php

$githubUser = 'symfony';
$githubRepo = 'symfony';

// Get GitHub JSON request

$githubUrl = 'http://github.com/api/v2/json/repos/show/'.$githubUser.'/'.$githubRepo.'/tags';
$githubJSONResponse = file_get_contents($githubUrl);

// Convert it to a PHP object

$githubResponseArray = json_decode($githubJSONResponse, true);
$tagList = array_keys($githubResponseArray["tags"]);

// Filter out non final tags

$filteredTagList = array_filter($tagList, "tagfilter");

function tagfilter($tag) {
	return !stripos($tag, "-") && !stripos($tag, "PR") && !stripos($tag, "BETA") && stripos($tag, "v2.0") === 0;
}

// Sort tags

natcasesort($filteredTagList);

// The first one is the last stable release for Symfony 2

$reverseFilteredTagList = array_reverse($filteredTagList);
echo $reverseFilteredTagList[0];