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<?php |
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namespace PhpOffice\PhpSpreadsheet\Calculation\MathTrig; |
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use PhpOffice\PhpSpreadsheet\Calculation\Exception; |
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use PhpOffice\PhpSpreadsheet\Calculation\Functions; |
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use PhpOffice\PhpSpreadsheet\Calculation\Information\ExcelError; |
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class Lcm |
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{ |
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/** |
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* Private method to return an array of the factors of the input value. |
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* |
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* @return int[] |
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*/ |
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private static function factors(float $value): array |
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{ |
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$startVal = floor(sqrt($value)); |
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$factorArray = []; |
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for ($i = $startVal; $i > 1; --$i) { |
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if (($value % $i) == 0) { |
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$factorArray = array_merge($factorArray, self::factors($value / $i)); |
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$factorArray = array_merge($factorArray, self::factors($i)); |
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if ($i <= sqrt($value)) { |
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break; |
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} |
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} |
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} |
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if (!empty($factorArray)) { |
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rsort($factorArray); |
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/** @var int[] $factorArray */ |
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return $factorArray; |
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} |
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return [(int) $value]; |
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} |
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/** |
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* LCM. |
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* |
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* Returns the lowest common multiplier of a series of numbers |
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* The least common multiple is the smallest positive integer that is a multiple |
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* of all integer arguments number1, number2, and so on. Use LCM to add fractions |
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* with different denominators. |
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* |
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* Excel Function: |
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* LCM(number1[,number2[, ...]]) |
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* |
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* @param mixed ...$args Data values |
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* |
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* @return int|string Lowest Common Multiplier, or a string containing an error |
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*/ |
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public static function evaluate(mixed ...$args): int|string |
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{ |
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try { |
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$arrayArgs = []; |
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$anyZeros = 0; |
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$anyNonNulls = 0; |
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foreach (Functions::flattenArray($args) as $value1) { |
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$anyNonNulls += (int) ($value1 !== null); |
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$value = Helpers::validateNumericNullSubstitution($value1, 1); |
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Helpers::validateNotNegative($value); |
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$arrayArgs[] = (int) $value; |
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$anyZeros += (int) !((bool) $value); |
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} |
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self::testNonNulls($anyNonNulls); |
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if ($anyZeros) { |
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return 0; |
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} |
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} catch (Exception $e) { |
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return $e->getMessage(); |
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} |
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$returnValue = 1; |
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$allPoweredFactors = []; |
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// Loop through arguments |
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foreach ($arrayArgs as $value) { |
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$myFactors = self::factors(floor($value)); |
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$myCountedFactors = array_count_values($myFactors); |
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$myPoweredFactors = []; |
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foreach ($myCountedFactors as $myCountedFactor => $myCountedPower) { |
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$myPoweredFactors[$myCountedFactor] = $myCountedFactor ** $myCountedPower; |
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} |
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self::processPoweredFactors($allPoweredFactors, $myPoweredFactors); |
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} |
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foreach ($allPoweredFactors as $allPoweredFactor) { |
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/** @var scalar $allPoweredFactor */ |
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$returnValue *= (int) $allPoweredFactor; |
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} |
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return $returnValue; |
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} |
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/** |
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* @param mixed[] $allPoweredFactors |
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* @param mixed[] $myPoweredFactors |
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*/ |
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private static function processPoweredFactors(array &$allPoweredFactors, array &$myPoweredFactors): void |
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{ |
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foreach ($myPoweredFactors as $myPoweredValue => $myPoweredFactor) { |
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if (isset($allPoweredFactors[$myPoweredValue])) { |
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if ($allPoweredFactors[$myPoweredValue] < $myPoweredFactor) { |
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$allPoweredFactors[$myPoweredValue] = $myPoweredFactor; |
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} |
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} else { |
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$allPoweredFactors[$myPoweredValue] = $myPoweredFactor; |
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} |
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} |
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} |
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private static function testNonNulls(int $anyNonNulls): void |
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{ |
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if (!$anyNonNulls) { |
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throw new Exception(ExcelError::VALUE()); |
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} |
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} |
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} |
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PHPOffice /
PhpSpreadsheet
