$ctx = stream_context_create($params);
$rawJson = file_get_contents($this->pingbackUrl, FALSE, $ctx);
$versionInfo = $rawJson ? json_decode($rawJson, TRUE) : NULL;
$ctx = stream_context_create($params);
$rawJson = file_get_contents($this->pingbackUrl, FALSE, $ctx);
$versionInfo = $rawJson ? json_decode($rawJson, TRUE) : NULL;