MatLabPHP

Some Math operations on PHP with MatLab syntaxis.

Requiring/Loading

If you're using Composer to manage dependencies, you can include the following in your composer.json file:

{
    "require": {
        "royopa/mat-lab-php": "dev-master"
    }
}

or

composer require royopa/mat-lab-php

Then, after running composer update or php composer.phar update, you can load the class using Composer's autoloading:

require 'vendor/autoload.php';

Otherwise, you can simply require the file directly:

require_once 'path/to/MatLabPHP/src/MatLabPHP.php';

And in either case, I'd suggest using an alias.

use MatLabPHP\MatLabPHP as M;

Methods

stringToVector()

$matLabPHP->stringToVector(string $str);

• description
  • Transform a vector in the format of [1 2 3] to an array(1,2,3);
• parameters
  • Number, Vector or Matrix. Ex: 1 or [1 2 3] or [1 2 ; 3 4]
• return
  • Array of Number, Vector or Matrix to operate in the class.

$matLabPHP = new MatLabPHP();
$matLabPHP->stringToVector("[3 1 2; 5 4 7; 6 9 7]");
    //array(
        0 => array(
            0 => '3',
            1 => '1',
            2 => '2'
        ),
        1 => array(
            0 => '5',
            1 => '4',
            2 => '7'
        ),
        2 => array(
            0 => '6',
            1 => '9',
            2 => '7'
        )
    );

eye()

$matLabPHP->eye($cols, $rows = 'eq');

• description
  • Create the identity matrix;
• parameters
  • cols and rows.
• return
  • Eye matrix

zeros()

$matLabPHP->zeros($cols, $rows = 'eq');

• description
  • Create the a matrix of zeros;
• parameters
  • cols and rows.
• return
  • Zero matrix

length()

$matLabPHP->length($vector, $ret = 0);

• description
  • Gives back the max between cols and rows of a matrix
• parameters
  • vector or matrix
• return
  • int

sum()

$matLabPHP->sum($sumA, $sumB);

• description
  • Sumes two matrix or vectors or numbers
• parameters
  • two vector or matrix or numbers
• return
  • result

mean()

$matLabPHP->mean($array);

• description
  • Calculate mean (simple arithmetic average).
• parameters
  • array $values
• return
  • string Mean

stddev()

$matLabPHP->stddev(array $a, $isSample = false);

• description
• parameters
• return

variance()

$matLabPHP->variance($a, $isSample);

• description
• parameters
• return

covariance()

$matLabPHP->covariance(array $x_values, array $y_values);

• description
• parameters
• return

correlation()

$matLabPHP->correlation(array $x_values, array $y_values, $isSample = false);

• description
• parameters
• return

Tests

From the project directory, tests can be ran using:

./vendor/bin/phpunit