{
}
protected abstract function live();
protected abstract function communicate($tool);
}
class Animals extends Living
{
protected function live()
{
echo 'Search food ... ' . PHP_EOL;
}
public function communicate($tool, $cantalk = false)
{
echo 'Animals can\'t use' . $tool . ' and they ' . ($cantalk ? 'can' : 'can\'t') . ' talk.' . PHP_EOL;
}
}
class Human extends Living
{
protected function live()
{
echo 'Work and make money ...' . PHP_EOL;
}
public function communicate($tool, $cantalk = true)
{
echo 'Human beings can use ' . $tool . ' and they ' . ($cantalk ? 'can' : 'can\'t') . ' talk.' . PHP_EOL;
}
}
$animal = new Animals();
$animal->communicate('phone', false);
$human = new Human();
$human->communicate('phone', true);
