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<?php class Counter { private $counter = 0; public function getCount() { return $this->counter; } public function increment() { $this->counter = $this->getCount() + 1; } } class CounterOfssetByOne extends Counter { public function getCount() { return parent::getCount() + 1; } } $counter = new CounterOfssetByOne; $counter->increment(); $counter->increment(); var_dump($counter->getCount());
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