<?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 $fillValue
     * @param int $rows
     * @param int|null $columns
     * @return Matrix
     * @throws Exception
     */
    public static function createFilledMatrix($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,
                    $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, $fillValue = null)
    {
        $grid = static::createFilledMatrix($fillValue, $dimensions)->toArray();

        for ($x = 0; $x < $dimensions; ++$x) {
            $grid[$x][$x] = 1;
        }

        return new Matrix($grid);
    }
}

• [D] Decomposition
• [D] Operators
• [F] Builder.php
  Delete
• [F] Div0Exception.php
  Delete
• [F] Exception.php
  Delete
• [F] Functions.php
  Delete
• [F] Matrix.php
  Delete
• [F] Operations.php
  Delete

Blog Section

Discover the Latest in Digital Payments and NFC Technology

Dive into our blog to explore the cutting-edge trends in digital payments and NFC technology. Stay updated on the innovations that are revolutionizing transactions, boosting security, and making payments quicker and more convenient. Learn how these advancements are shaping the future of financial interactions and driving the global transition towards a cashless world.

The Rise of Contactless Payments:...

In recent years, contactless payments have surged in popularity, driven...

Visit Blog

March 27, 2024

Enhancing Payment Security: The Role...

As digital transactions proliferate, ensuring robust payment security is more critical than ever. Two foundational...

Visit Blog

March 27, 2024

The Future of Digital Wallets:...

Digital wallets have fundamentally transformed how we manage money, offering a streamlined, secure, and highly...

Visit Blog

March 27, 2024