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<?php |
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namespace PhpOffice\PhpSpreadsheet\Calculation\LookupRef; |
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use PhpOffice\PhpSpreadsheet\Calculation\Functions; |
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class Matrix |
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{ |
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/** |
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* TRANSPOSE. |
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* |
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* @param mixed (array) $matrixData A matrix of values |
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* |
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* @return array |
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*/ |
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public static function transpose($matrixData) |
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{ |
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$returnMatrix = []; |
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if (!is_array($matrixData)) { |
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$matrixData = [[$matrixData]]; |
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} |
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$column = 0; |
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foreach ($matrixData as $matrixRow) { |
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$row = 0; |
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foreach ($matrixRow as $matrixCell) { |
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$returnMatrix[$row][$column] = $matrixCell; |
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++$row; |
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} |
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++$column; |
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} |
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return $returnMatrix; |
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} |
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/** |
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* INDEX. |
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* |
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* Uses an index to choose a value from a reference or array |
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* |
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* Excel Function: |
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* =INDEX(range_array, row_num, [column_num]) |
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* |
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* @param mixed $matrix A range of cells or an array constant |
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* @param mixed $rowNum The row in the array or range from which to return a value. |
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* If row_num is omitted, column_num is required. |
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* @param mixed $columnNum The column in the array or range from which to return a value. |
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* If column_num is omitted, row_num is required. |
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* |
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* @return mixed the value of a specified cell or array of cells |
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*/ |
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public static function index($matrix, $rowNum = 0, $columnNum = 0) |
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{ |
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$rowNum = Functions::flattenSingleValue($rowNum); |
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$columnNum = Functions::flattenSingleValue($columnNum); |
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if (!is_numeric($rowNum) || !is_numeric($columnNum) || ($rowNum < 0) || ($columnNum < 0)) { |
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return Functions::VALUE(); |
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} |
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if (!is_array($matrix) || ($rowNum > count($matrix))) { |
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return Functions::REF(); |
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} |
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$rowKeys = array_keys($matrix); |
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$columnKeys = @array_keys($matrix[$rowKeys[0]]); |
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if ($columnNum > count($columnKeys)) { |
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return Functions::REF(); |
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} |
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if ($columnNum == 0) { |
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return self::extractRowValue($matrix, $rowKeys, $rowNum); |
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} |
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$columnNum = $columnKeys[--$columnNum]; |
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if ($rowNum == 0) { |
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return array_map( |
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function ($value) { |
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return [$value]; |
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}, |
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array_column($matrix, $columnNum) |
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); |
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} |
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$rowNum = $rowKeys[--$rowNum]; |
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return $matrix[$rowNum][$columnNum]; |
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} |
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private static function extractRowValue(array $matrix, array $rowKeys, int $rowNum) |
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{ |
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if ($rowNum == 0) { |
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return $matrix; |
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} |
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$rowNum = $rowKeys[--$rowNum]; |
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$row = $matrix[$rowNum]; |
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if (is_array($row)) { |
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return [$rowNum => $row]; |
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} |
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return $row; |
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} |
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} |
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PHPOffice /
PhpSpreadsheet
