function getPublishedIssues($issueIds, $context)
{
$publishedIssues = array();
$issueDao = DAORegistry::getDAO('IssueDAO');
foreach ($issueIds as $issueId) {
$publishedIssue = $issueDao->getById($issueId, $context->getId());
if ($publishedIssue && $publishedIssue->getStoredPubId('doi')) {
$publishedIssues[] = $publishedIssue;
}
}
return $publishedIssues;
}