onixsib/yii2-net-address-validators

<?php
/**
 * @author: onixsib <a@onixsib.ru>
 * @date:   03.08.2016
 * @copyright onixsib
 * @link http://onixsib.ru/
 * @file IPv4Validator
 */
namespace onixsib\validators;

use Yii;
use yii\validators\Validator;

/**
 * Class IPv4Validator
 */
class IPv4Validator extends Validator {
    /**
     * @inheritdoc
     */
    public function init() {
        parent::init();
        if ($this->message === null) {
            $this->message = \Yii::t('yii', "{attribute} is invalid.");
        }
    }

    public function validateAttribute($model, $attribute) {
        $string = $model->{$attribute};
        if (!$this->validateValue($string)) {
            $this->addError($model, $attribute, \Yii::t('yii', 'This in not valid IPv4 address {sample}', ['sample' => '127.0.0.1']));
        }
    }

    public function validateValue($string) {

        // filter_var suxx
        return preg_match('/^((2[0-4]|1\d|[1-9])?\d|25[0-5])(\.(?1)){3}\z/', $string);
    }
}

?>