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<?php
$group = get_entity((int)get_input('group_guid'));
$feed_url = get_input('feed_url');
if (!simplepie_is_url($feed_url)) {
register_error (elgg_echo("simplepie:invalid_url"));
forward(REFERER);
}
if (!$group || !$group->canEdit() || !elgg_instanceof($group, 'group')) {
forward(REFERER);
}
$group->feed_url = $feed_url;
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