Helper Php

<?php
class Helper {


    public static function getActive($page = null) {
        if(!empty($page)) {
            if(is_array($page)) {
                $error = array();
                foreach($page as $key => $value) {
                    if(Url::getParam($key) != $value) {
                        array_push($error, $key);
                    }
                }
                return empty($error) ? " class=\"act\"" : null;
            }
        }
        return $page == Url::cPage() ? " class=\"act\"" : null;
    }

    public static function encodeHTML($string, $case = 2) {
        switch($case) {
            case 1:
            return htmlentities($string, ENT_NOQUOTES, 'UTF-8', false);
            break;
            case 2:
            $pattern = '<([a-zA-Z0-9\.\, "\'_\/\-\+~=;:\(\)?&#%![\]@]+)>';
            // put text only, devided with html tags into array
            $textMatches = preg_split('/' . $pattern . '/', $string);
            // array for sanitised output
            $textSanitised = array();
            foreach($textMatches as $key => $value) {
                $textSanitised[$key] = htmlentities(html_entity_decode($value, ENT_QUOTES, 'UTF-8'), ENT_QUOTES, 'UTF-8');
            }
            foreach($textMatches as $key => $value) {
                $string = str_replace($value, $textSanitised[$key], $string);
            }
            return $string;
            break;
        }
    }


    public static function getImgSize($image, $case) {
        if(is_file($image)) {
            // 0 => width, 1 => height, 2 => type, 3 => attributes
            $size = getimagesize($image);
            return $size[$case];
        }
    }


    public static function shortenString($string, $len = 150) {
        if (strlen($string) > $len) {
            $string = trim(substr($string, 0, $len));
            $string = substr($string, 0, strrpos($string, " "))."&hellip;";
        } else {
            $string .= "&hellip;";
        }
        return $string;
    }






    public static function redirect($url = null) {
        if (!empty($url)) {
            header("Location: {$url}");
            exit;
        }
    }







    public static function setDate($case = null, $date = null) {

        $date = empty($date) ? time() : strtotime($date);

        switch($case) {
            case 1:
            // 01/01/2010
            return date('d/m/Y', $date);
            break;
            case 2:
            // Monday, 1st January 2010, 09:30:56
            return date('l, jS F Y, H:i:s', $date);
            break;
            case 3:
            // 2010-01-01-09-30-56
            return date('Y-m-d-H-i-s', $date);
            break;
            default:
            return date('Y-m-d H:i:s', $date);
        }

    }









    public static function cleanString($name = null) {
        if (!empty($name)) {
            return strtolower(preg_replace('/[^a-zA-Z0-9.]/', '-', $name));
        }
    }















}