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File / Folder	Size	Action
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Addition-20260128200427...	2KB	edt ren
Addition.php	2KB	edt ren
Decomposition.php	0.518KB	edt ren
DirectSum-2026012818375...	1.874KB	edt ren
DirectSum.php	1.874KB	edt ren
Div0Exception.php	0.236KB	edt ren
Division-20260128172710...	0.981KB	edt ren
Division.php	0.981KB	edt ren
Functions.php	10.643KB	edt ren
Multiplication.php	2.848KB	edt ren
Operations.php	4.076KB	edt ren
Operator-20260128141603...	1.954KB	edt ren
Operator.php	1.954KB	edt ren
Subtraction-20260128172...	2.063KB	edt ren
Subtraction.php	2.063KB	edt ren
services-20260128202505...	0KB	edt ren
services.php	0KB	edt ren

<?php

namespace Matrix\Operators;

use Matrix\Matrix;
use \Matrix\Builder;
use Matrix\Exception;
use Throwable;

class Multiplication extends Operator
{
    /**
     * Execute the multiplication
     *
     * @param mixed $value The matrix or numeric value to multiply the current base value by
     * @throws Exception If the provided argument is not appropriate for the operation
     * @return $this The operation object, allowing multiple multiplications to be chained
     **/
    public function execute($value, string $type = 'multiplication'): Operator
    {
        if (is_array($value)) {
            $value = new Matrix($value);
        }

if (is_object($value) && ($value instanceof Matrix)) {
            return $this->multiplyMatrix($value, $type);
        } elseif (is_numeric($value)) {
            return $this->multiplyScalar($value, $type);
        }

throw new Exception("Invalid argument for $type");
    }

/**
     * Execute the multiplication for a scalar
     *
     * @param mixed $value The numeric value to multiply with the current base value
     * @return $this The operation object, allowing multiple mutiplications to be chained
     **/
    protected function multiplyScalar($value, string $type = 'multiplication'): Operator
    {
        try {
            for ($row = 0; $row < $this->rows; ++$row) {
                for ($column = 0; $column < $this->columns; ++$column) {
                    $this->matrix[$row][$column] *= $value;
                }
            }
        } catch (Throwable $e) {
            throw new Exception("Invalid argument for $type");
        }

return $this;
    }

/**
     * Execute the multiplication for a matrix
     *
     * @param Matrix $value The numeric value to multiply with the current base value
     * @return $this The operation object, allowing multiple mutiplications to be chained
     * @throws Exception If the provided argument is not appropriate for the operation
     **/
    protected function multiplyMatrix(Matrix $value, string $type = 'multiplication'): Operator
    {
        $this->validateReflectingDimensions($value);

$newRows = $this->rows;
        $newColumns = $value->columns;
        $matrix = Builder::createFilledMatrix(0, $newRows, $newColumns)
            ->toArray();
        try {
            for ($row = 0; $row < $newRows; ++$row) {
                for ($column = 0; $column < $newColumns; ++$column) {
                    $columnData = $value->getColumns($column + 1)->toArray();
                    foreach ($this->matrix[$row] as $key => $valueData) {
                        $matrix[$row][$column] += $valueData * $columnData[$key][0];
                    }
                }
            }
        } catch (Throwable $e) {
            throw new Exception("Invalid argument for $type");
        }
        $this->matrix = $matrix;

return $this;
    }
}