function getBalanceInSatoshis($address)
{
$client = new HttpClient();
$response = $client->get(balanceLookupURL($address));
if ($response->statusCode == 200 && isInteger($response->content)) {
return intval($response->content);
} else {
$e = strtolower($response->content);
preg_match('@<title>(.*)</title>@', $response->content, $matches);
$title = at($matches, 1);
if ($e == 'checksum does not validate' || beginsWith($e, 'illegal character') || in_array($e, array('input to short', 'input too short'))) {
throw new InvalidAddress("{$address} appears to be an invalid Bitcoin address");
} else {
if (contains($e, 'cloudflare') && !empty($title)) {
throw new NetworkError("CloudFlare-reported problem at blockchain.info: " . withoutPrefix($title, "blockchain.info | "));
} else {
if (contains(strtolower($title), 'under maintenance')) {
throw new NetworkError("Blockchain.info appears to be under maintenance");
} else {
if (contains($e, "maximum concurrent requests reached")) {
throw new NetworkError("Maximum concurrent requests to Blockchain.info reached");
} else {
if (!empty($title)) {
throw new NetworkError("Unknown error when attempting to check address-balance " . "for ({$address}) via blockchain.info: {$title}");
} else {
if (trim($e) == '') {
throw new NetworkError("Blockchain.info returned empty/content-less response");
} else {
if ($e == 'lock wait timeout exceeded; try restarting transaction') {
throw new NetworkError("Blockchain.info responded with error message about lock timeout");
} else {
throw new \Exception("Unexpected result received from blockchain.info when " . "attempting to get balance of address {$address}: {$response->content}");
}
}
}
}
}
}
}
}
}
function get($url)
{
$c = new HttpClient();
$r = $c->get($url);
return $r->content;
}