/**
* Test is the two blocks overlap, i.e. if block1 contains block2, or block2 contains block1
*
* @param $block mixed
* @return bool
*/
public function overlaps($block)
{
if (!$block instanceof IPBlock) {
$block = new $this->class($block);
}
return !($block->getFirstIp()->numeric() > $this->last_ip->numeric() || $block->getLastIp()->numeric() < $this->first_ip->numeric());
}
