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<?php
/**
 * @package	RSMembership!
 * @copyright	(c) 2009 - 2016 RSJoomla!
 * @link		https://www.rsjoomla.com
 * @license	GNU General Public License
http://www.gnu.org/licenses/gpl-3.0.en.html
 */
defined('_JEXEC') or die('Restricted access');

class RSMembershipValidation
{
	public static function website($url) {
		return preg_match('#^(http|https)://([\w-]+\.)+[\w-]+(/[\w-
./?%&=]*)?$#', $url);
	}

	public static function email($email) {
		jimport('joomla.mail.helper');

		return JMailHelper::isEmailAddress($email);
	}

	public static function numeric($number) {
		if (is_array($number)) $number = implode('', $number);
		$number = str_replace(array("\n", "\r",
"\t"), '', $number);

		return
preg_match("/^([0-9]{1,3}(?:,?[0-9]{3})*(?:\.[0-9]+?)?)$/",
$number) ||
preg_match("/^([0-9]{1,3}(?:\.?[0-9]{3})*(?:,[0-9]+?)?)$/",
$number);
	}
	
	public static function alphanumeric($string) {
		if (is_array($string)) $string = implode('', $string);
		$string = str_replace(array("\n", "\r",
"\t"), '', $string);

		return !preg_match('#([^a-zA-Z0-9 ])#', $string);
	}
	
	public static function alpha($string) {
		if (is_array($string)) $string = implode('', $string);
		$string = str_replace(array("\n", "\r",
"\t"), '', $string);

		return !preg_match('#([^a-zA-Z ])#', $string);
	}
}