private function getBasesOf(Transaction $transaction)
{
if ($transaction instanceof Base) {
return [$transaction];
}
$bases = [];
foreach ($transaction->getInputs() as $input) {
$bases = array_merge($bases, $this->getBasesOf($input->getTransaction()));
}
return $bases;
}
private function outputsExist(Transaction $transaction)
{
$exists = true;
foreach ($transaction->getInputs() as $input) {
if (!array_key_exists($input->getOutputIndex(), $input->getTransaction()->getOutputs())) {
$this->errors[] = 'Invalid output index';
$exists = false;
}
}
return $exists;
}
