| Server IP : 66.29.137.217 / Your IP : 3.22.194.224 Web Server : LiteSpeed System : Linux premium294.web-hosting.com 4.18.0-513.11.1.lve.el8.x86_64 #1 SMP Thu Jan 18 16:21:02 UTC 2024 x86_64 User : gltevjme ( 1095) PHP Version : 7.0.33 Disable Function : NONE MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : OFF | Pkexec : OFF Directory : /home/gltevjme/cbt.bofirm.com/vendor/markbaker/matrix/classes/src/Operators/ |
Upload File : |
<?php
namespace Matrix\Operators;
use Matrix\Matrix;
use \Matrix\Builder;
use Matrix\Exception;
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): Operator
{
if (is_array($value)) {
$value = new Matrix($value);
}
if (is_object($value) && ($value instanceof Matrix)) {
return $this->multiplyMatrix($value);
} elseif (is_numeric($value)) {
return $this->multiplyScalar($value);
}
throw new Exception('Invalid argument for multiplication');
}
/**
* 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): Operator
{
for ($row = 0; $row < $this->rows; ++$row) {
for ($column = 0; $column < $this->columns; ++$column) {
$this->matrix[$row][$column] *= $value;
}
}
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): Operator
{
$this->validateReflectingDimensions($value);
$newRows = $this->rows;
$newColumns = $value->columns;
$matrix = Builder::createFilledMatrix(0, $newRows, $newColumns)
->toArray();
for ($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];
}
}
}
$this->matrix = $matrix;
return $this;
}
}