Search moodle.org's
Developer Documentation

See Release Notes

  • Bug fixes for general core bugs in 3.11.x will end 14 Nov 2022 (12 months plus 6 months extension).
  • Bug fixes for security issues in 3.11.x will end 13 Nov 2023 (18 months plus 12 months extension).
  • PHP version: minimum PHP 7.3.0 Note: minimum PHP version has increased since Moodle 3.10. PHP 7.4.x is supported too.
<?php

/**
 *
 * Class for the creating "special" Matrices
 *
 * @copyright  Copyright (c) 2018 Mark Baker (https://github.com/MarkBaker/PHPMatrix)
 * @license    https://opensource.org/licenses/MIT    MIT
 */

namespace Matrix;

/**
 * Matrix Builder class.
 *
 * @package Matrix
 */
class Builder
{
    /**
     * Create a new matrix of specified dimensions, and filled with a specified value
     * If the column argument isn't provided, then a square matrix will be created
     *
< * @param mixed $value
> * @param mixed $fillValue
* @param int $rows * @param int|null $columns * @return Matrix * @throws Exception */
< public static function createFilledMatrix($value, $rows, $columns = null)
> public static function createFilledMatrix($fillValue, $rows, $columns = null)
{ if ($columns === null) { $columns = $rows; } $rows = Matrix::validateRow($rows); $columns = Matrix::validateColumn($columns); return new Matrix( array_fill( 0, $rows, array_fill( 0, $columns,
< $value
> $fillValue
) ) ); } /** * Create a new identity matrix of specified dimensions * This will always be a square matrix, with the number of rows and columns matching the provided dimension * * @param int $dimensions * @return Matrix * @throws Exception */
< public static function createIdentityMatrix($dimensions)
> public static function createIdentityMatrix($dimensions, $fillValue = null)
{
< $grid = static::createFilledMatrix(null, $dimensions)->toArray();
> $grid = static::createFilledMatrix($fillValue, $dimensions)->toArray();
for ($x = 0; $x < $dimensions; ++$x) { $grid[$x][$x] = 1; } return new Matrix($grid); } }