<?php
public function getClosestPerfectNumber($nbFighters){
		$perfectNumbers = $this->perfectNumbers;
		foreach ($perfectNumbers as $key => $perfectNumber) {
			if($nbFighters < $perfectNumber){
				return array(
					'roundNumber' => $key - 1 ,
					'roundName' => isset($perfectNumbers[$key - 2]) ? $this->getRoundName($perfectNumbers[$key - 2]) : 'Final 1-2',
					'value' => isset($perfectNumbers[$key - 1]) ? $perfectNumbers[$key - 1] : 0,
				);
			}elseif($nbFighters === $perfectNumber){
				return array(
					'roundNumber' => $key,
					'roundName' => isset($perfectNumbers[$key - 2]) ? $this->getRoundName($perfectNumbers[$key - 1]) : 'Final 1-2',
					'value' => $perfectNumbers[$key],
				);
			}
		}
		return false;
	}

	private function getPerfectNumbers(){
		$numbers[] = 1;
		for($i = 1; $i < 20; $i++){
			$numbers[] = $numbers[count($numbers) - 1] * 2;
		}

		return $numbers;
	}