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