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<?php
declare(strict_types=1);
namespace Yiisoft\Validator\Rule;
use Yiisoft\Validator\Rule;
use Yiisoft\Validator\Result;
use Yiisoft\Validator\DataSetInterface;
/**
* RegularExpressionValidator validates that the attribute value matches the specified [[pattern]].
*
* If the [[not]] property is set true, the validator will ensure the attribute value do NOT match the [[pattern]].
*/
class MatchRegularExpression extends Rule
{
* @var string the regular expression to be matched with
private string $pattern;
* @var bool whether to invert the validation logic. Defaults to false. If set to true,
* the regular expression defined via [[pattern]] should NOT match the attribute value.
private bool $not = false;
private string $message = 'Value is invalid.';
public function __construct(string $pattern)
$this->pattern = $pattern;
}
protected function validateValue($value, DataSetInterface $dataSet = null): Result
$result = new Result();
$valid = !is_array($value) &&
((!$this->not && preg_match($this->pattern, $value))
|| ($this->not && !preg_match($this->pattern, $value)));
if (!$valid) {
$result->addError($this->translateMessage($this->message));
return $result;
public function not(): self
$new = clone $this;
$new->not = true;
return $new;
public function message(string $message): self
$new->message = $message;
yiisoft /
validator
