<?php
require_once 'vendor/autoload.php';
class BiggerOperator extends \Calculator\Operators\BaseOperator
{
protected $symbol = '>';
protected $priority = 2;
public function process($index, \SplDoublyLinkedList $list)
{
$first = $list->offsetGet($index - 1);
$second = $list->offsetGet($index + 1);
$result = (bool) ($first > $second);
$list->offsetSet($index - 1, $result);
unset($list[$index]);
unset($list[$index]);
}
}
$formula = '( ( 10 * x + y ) / z AND ( 20 OR 0 ) XOR ( x XNOR y ) ) OR 1 + 2';
$calculator = new \Calculator\Calculator($formula);
//$calculator->setFormula($formula);
\Calculator\Calculator::extend(BiggerOperator::class);
var_dump($calculator->result(['x' => 10, 'y' => 20, 'z' => 2]));
