protected function __add__($arg)
{
if ($arg instanceof AtomEntry) {
$this->entry[] = $arg;
} else {
if ($arg instanceof self) {
foreach ($arg->arEntry() as $entry) {
$this->entry[] = $entry;
}
} else {
if (is_implements_of($arg, "AtomInterface")) {
$entry = new AtomEntry();
$entry->id($arg->atom_id());
$entry->title($arg->atom_title());
$entry->published($arg->atom_published());
$entry->updated($arg->atom_updated());
$entry->issued($arg->atom_issued());
$content = new AtomContent();
$content->value($arg->atom_content());
$entry->content($content);
$summary = new AtomSummary();
$summary->value($arg->atom_summary());
$entry->summary($summary);
$entry->link(new AtomLink("href=" . $arg->atom_href()));
$entry->author(new AtomAuthor("name=" . $arg->atom_author()));
$this->entry[] = $entry;
}
}
}
}
