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<?php function roundHalfToEven($number) { $rounded = round($number); // Use built-in round to get the nearest integer // Check if the difference is exactly 0.5 if (abs($number - $rounded) == 0.5) { // If the rounded number is even, return it if ($rounded % 2 == 0) { return $rounded; } // If the rounded number is odd, adjust to the nearest even number return $rounded - ($number > 0 ? 1 : -1); } return $rounded; // Return the rounded number if it's not a halfway case } function checkLoserRound($matchRound) { $bracketRound = $matchRound - 1; $equationFormula = ($matchRound - 1) / 2; $Rl = 2 * $bracketRound + 1 - $equationFormula; $Rl = roundHalfToEven($Rl); return $Rl; } echo checkLoserRound(1);