<?php /** * * Function code for the matrix subtraction operation * * @copyright Copyright (c) 2018 Mark Baker (https://github.com/MarkBaker/PHPMatrix) * @license https://opensource.org/licenses/MIT MIT */ namespace Matrix; use Matrix\Operators\Subtraction; /** * Subtracts two or more matrices * * @param mixed[] $matrixValues The matrices to subtract * @return Matrix * @throws Exception */ function subtract(...$matrixValues) { if (count($matrixValues) < 2) { throw new Exception('This operation requires at least 2 arguments'); } $matrix = array_shift($matrixValues); if (!is_object($matrix) || !($matrix instanceof Matrix)) { $matrix = new Matrix($matrix); } $result = new Subtraction($matrix); foreach ($matrixValues as $matrix) { $result->execute($matrix); } return $result->result(); }