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Differences Between: [Versions 310 and 311] [Versions 39 and 311]

   1  <?php
   2  
   3  /**
   4   *
   5   * Function code for the matrix cofactors() function
   6   *
   7   * @copyright  Copyright (c) 2018 Mark Baker (https://github.com/MarkBaker/PHPMatrix)
   8   * @license    https://opensource.org/licenses/MIT    MIT
   9   */
  10  
  11  namespace Matrix;
  12  
  13  /**
  14   * Returns the cofactors of a matrix or an array.
  15   *
  16   * @param Matrix|array $matrix Matrix or an array to treat as a matrix.
  17   * @return Matrix The new matrix
  18   * @throws Exception If argument isn't a valid matrix or array.
  19   */
  20  function cofactors($matrix): Matrix
  21  {
  22      if (is_array($matrix)) {
  23          $matrix = new Matrix($matrix);
  24      }
  25      if (!$matrix instanceof Matrix) {
  26          throw new Exception('Must be Matrix or array');
  27      }
  28  
  29      return Functions::cofactors($matrix);
  30  }