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<?php $hotels = [ ['ibis', 2, 8.1, 11067], ['Loft', 0, 8.9, 12154], ['Green', 0, 9.1, 14114], ]; $totalHotelsNumber = 2; $starCoef = 0.2; $ratingCoef = 2000; for ( $i=0; $i<count($hotels); $i++ ) { $hotels[$i][4] = 0; } for ( $i=0; $i<count($hotels); $i++ ) { for ( $j=$i+1; $j<count($hotels); $j++ ) { echo 'Comparing '.$hotels[$i][0].' and '.$hotels[$j][0].'...'."\r\n"; $starDifference = $hotels[$i][1]-$hotels[$j][1]; $ratingToCompensate = $starDifference*$starCoef; $rating = $hotels[$i][2]+$ratingToCompensate; $ratingDifference = ($rating-$hotels[$j][2])*10; $priceToCompensate = $ratingDifference*$ratingCoef; $price = round($hotels[$i][3]-$priceToCompensate); echo $price.' VS '.$hotels[$j][3]."\r\n"; if ( $price < $hotels[$j][3] ) { echo $hotels[$i][0].' wins!'."\r\n"; $hotels[$i][4]++; } else { echo $hotels[$j][0].' wins!'."\r\n"; $hotels[$j][4]++; } echo "\r\n".'----------'."\r\n"; } } usort($hotels, function($hotelA, $hotelB){ return $hotelB[4]-$hotelA[4]; }); echo "\r\n".'----------'."\r\n"; echo 'Top:'."\r\n\r\n"; for ( $i=0; $i<count($hotels); $i++ ) { echo $hotels[$i][0].': '.$hotels[$i][4]."\r\n"; } echo "\r\n".'----------'."\r\n"; echo 'Finalists:'."\r\n\r\n"; for ( $i=0; $i<=1; $i++ ) { echo $hotels[$i][0]."\r\n"; }