wallabag/src/Wallabag/CoreBundle/Helper/Url.php

<?php

namespace Wallabag\CoreBundle\Helper;

class Url
{
    public $url;

    public function __construct($url)
    {
        $this->url = base64_decode($url);
    }

    public function getUrl()
    {
        return $this->url;
    }

    public function setUrl($url)
    {
        $this->url = $url;
    }

    public function isCorrect()
    {
        return filter_var($this->url, FILTER_VALIDATE_URL) !== false;
    }
}