<?php

/**
* @name Cleaner - class that cleans chars transmited via an url
* @author hide@address.com
*/


class Cleaner
{
    // cleans as per RFC 1808 as well strips any html and php tags
    // returns UTF-8 into lowercase
    function clean_rfc1808($str)
    {
        // rfc http://www.ietf.org/rfc/rfc1808.txt
        $national = array("{" , "}" , "|" , "\\" , "^" , "~" , "[" , "]" , "`");
        $extra = array("!", "*", "'", "(", ")", ",");
        $bad_chars = array_merge($national, $extra);

        // clean bad chars
        $clean = trim(str_replace($bad_chars, "", strip_tags($str)));
        // strip white spaces
        $clean = preg_replace('/\s+/','',$clean);
        return mb_strtolower($clean, 'UTF-8');
    }


    // wrapper to htmlspecialchars using ENT_QUOTES
    function html_chars($str)
    {
        return htmlspecialchars($str, ENT_QUOTES);
    }

    // wrapper to htmlspecialchars using ENT_QUOTES
    function html_chars_decode($str)
    {
        return htmlspecialchars_decode($str, ENT_QUOTES);
    }
}