formula

Simple mathematical expression parser

Installation

The preferred way to install this extension is through composer.

Either run

php composer.phar require --prefer-dist seregas/formula "*"

or add

"seregas/formula": "*"

to the require section of your composer.json file.

Usage

Once the extension is installed, simply use it in your code by :

$parser = new \socialist\formula\Formula('2 + 3 * 2,65 + 25 - 26');
$parser->calculate(); // 8.95

Also in the formula you can use variables:

$parser = new \socialist\formula\Formula('2 + 3 * p + 25 - 26');
$parser->setVariable('p', 2,65);
$parser->calculate(); // 8.95

And insert comments like /.../, [...] or {...}:

$parser = new \socialist\formula\Formula('2 + 3 p / price */ + 25 - 26');
$parser->setVariable('p', 2,65);
$parser->calculate(); // 8.95