<?php
/**
 * @version		1.0.0
 * @category	Anahita Social Engine™
 * @copyright	Copyright (C) 2008 - 2010 rmdStudio Inc. and Peerglobe Technology Inc. All rights reserved.
 * @license		GNU GPLv2 <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
 * @link     	http://www.anahitapolis.com
 */

class AnUtilFilterAlias extends KFilterAbstract
{
	/**
	 * Validate a value
	 *
	 * @param	scalar	Value to be validated
	 * @return	bool	True when the variable is valid
	 */
	protected function _validate($value)
	{
		$value = trim($value);
	   	$pattern = '/[A-Za-z0-9\-_]*$/';
    	return (is_string($value) && (preg_match($pattern, $value)) == 1);
	}
	
	/**
	 * Sanitize a value
	 *
	 * @param	mixed	Value to be sanitized
	 * @return	string
	 */
	protected function _sanitize($value)
	{
		$value = trim($value);
		$value = preg_replace('/ /', '-', $value);
		$pattern 	= '/[^A-Za-z0-9\-_]*/';
		$value		= strtolower(preg_replace($pattern, '', $value));
		return $value;
	}
}