find the website base url dynamically

base_url.php

/**
     * @param bool $fullBase 
     * @return string
     */

    function baseUrl($fullBase=false){

        $scriptName = $_SERVER['SCRIPT_NAME'];
        $parts = explode('/',$scriptName);
        array_pop($parts);
        $basePath = implode('/',$parts);

        if($fullBase){

            $host = $_SERVER['HTTP_HOST'];
            $host = rtrim($host,'/');

            $basePath = sprintf('%s://%s%s',
                (isset($_SERVER['HTTPS'] )?'https':'http'),
                $host,
                $basePath
            );
        }
        return $basePath;

    }