public function calculate($expression)
{
$stack = array();
foreach ($expression as $part) {
if (in_array($part, array('+', '-', '*', '/'))) {
$b = array_pop($stack);
$a = array_pop($stack);
$operation = OperationFactory::createOperation($part);
$result = $operation->calculate($a, $b);
array_push($stack, $result);
} else {
array_push($stack, $part);
}
}
return $stack[0];
}
<?php
define('ROOT_PATH', dirname(__FILE__));
require_once ROOT_PATH . '/../../Loader.php';
$opra = OperationFactory::createOperation('+');
$opra->setNumberA(11);
$opra->setNumberB(33);
echo $opra->getResult();
public function testCreateUnknown()
{
$this->assertNull(OperationFactory::createOperation(''));
}
