PHP BaseUrl Function

baseurl.php

<?php
     function curPageURL()
   {
        preg_match('/index.php[\/]*(.*)/', ( ! empty($_SERVER['SUPHP_URI'])) ? $_SERVER['SUPHP_URI'] : $_SERVER['PHP_SELF'], $match);
        $protocol = (isset($_SERVER['HTTPS'])) ? 's' : '';
        $base_url = preg_split("/\?/", str_ireplace(((isset($match[1])) ? trim($match[1], '/') : ''), '', urldecode(trim((( ! empty($_SERVER['REQUEST_URI'])) ? $_SERVER['REQUEST_URI'] : '/'), '/'))));
        $port = (isset($_SERVER['SERVER_PORT']) AND $_SERVER['SERVER_PORT'] != 80) ? ':'.$_SERVER['SERVER_PORT'] : ''; 
        $url = trim(sprintf("http".$protocol."://%s/%s", (( ! empty($_SERVER['HTTP_HOST'])) ? $_SERVER['HTTP_HOST'] : 'localhost'.$port), reset($base_url)),'/') . '/';
        return $url;
    }

    $baseHREF  =  curPageURL();

?>