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<?php
declare(strict_types=1);
/**
* @license http://opensource.org/licenses/mit-license.php MIT
* @link https://github.com/nicoSWD
* @author Nicolas Oelgart <[email protected]>
*/
namespace nicoSWD\Rules;
use Exception;
class Rule
{
/** @var string */
private $rule;
/** @var Parser */
private $parser;
private $parsedRule = '';
private $error = '';
private $container;
public function __construct(string $rule, array $variables = [])
$this->container = require __DIR__ . '/container.php';
$this->parser = $this->container->parser($variables);
$this->rule = $rule;
}
public function isTrue(): bool
return $this->container->evaluator()->evaluate(
$this->parsedRule ?:
$this->parser->parse($this->rule)
);
public function isFalse(): bool
return !$this->isTrue();
* Tells whether a rule is valid (as in "can be parsed without error") or not.
public function isValid(): bool
try {
$this->parsedRule = $this->parser->parse($this->rule);
} catch (Exception $e) {
$this->error = $e->getMessage();
return false;
return true;
public function getError(): string
return $this->error;
nicoSWD /
php-rule-parser
